# Patent

## Title
Aryl substituted heterocyclyl sulfones

## Abstract

The invention relates to aryl substituted heterocyclyl sulfones as voltage gated calcium channel blockers, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.

## Background
This application claims priority of European Patent Application No. 14001345.9, filed Apr. 14, 2014, the entire contents of which are incorporated herein by reference.
FIELD OF THE INVENTION
The invention relates to aryl-substituted heterocycl sulfones as voltage gated Ca-channel (CaV) blockers, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.
BACKGROUND OF THE INVENTION
Ion channels are proteins that form pores in membranes of biological cells and control the flow of ions down their electrochemical gradient. They are involved in the regulation of a wide range of cellular functions in both excitable and nonexcitable cells and provide attractive therapeutic targets for the treatment of various diseases.
In the somatosensory context, CaV2.2 channels, specific cellular plasma membrane calcium channels that belong to a diverse superfamily of voltage-gated calcium channels (VGCCs), were demonstrated to play an important role in spinal nociceptive processing.
The critical role of CaV2.2 in pain processing was underlined by the clinical efficacy of the intrathecally delivered, selective CaV2.2 channel antagonist Ziconotide (SNX-111; PrialtTM), a synthetic peptide derived from a ω-(omega)-conotoxin peptide (Miljanich, 2004, Curr. Med. Chem., 11(23), p. 3029-40; Staats et al., 2004, JAMA, 291(1), p. 63-70). Inthrathecal administration of Ziconotide is required in order to reach the ion channel in presynaptic terminals of sensory neurons in the spinal cord. Common side effects of Ziconotide include memory impairment, dizziness, nystagmus, speech disorder, nervousness, somnolence and abnormal gait (Rauck et al., 2009, Pain Pract., 9, p. 327-37), which have been attributed to the inhibition of CaV2.2 channels in the brain by Ziconotide.
Therefore, a demand remains for the development of orally available CaV2.2 calcium channel blockers that show the desired qualities and effectively block CaV2.2 calcium channels in the nociceptive signaling pathway.
SUMMARY OF THE INVENTION
The present invention describes small molecule CaV2.2 channel blockers. Sulfonamide based CaV2.2 channel modulators are known from WO 2007125398.
It was therefore an object of the invention to provide novel compounds, preferably having advantages over the prior-art compounds. The compounds should be suitable in particular as pharmacological active ingredients in pharmaceutical compositions, preferably in pharmaceutical compositions for the treatment and/or prophylaxis of disorders or diseases which are at least partially mediated by CaV2.2 calcium channels.
This object is achieved by the subject matter described herein.
The present invention therefore relates to a compound of general formula (I),




wherein

    m represents 0, 1 or 2;
    n denotes 0 or 1;
    Y is selected from the group consisting of bond and —C(R3)2—,
    
        wherein each R3 is independently selected from the group consisting of H and C1-6-alkyl, or two R3 form together with the C-atom connecting them a C3-10-cycloalkyl or a 3 to 7 membered heterocyclyl;
    
    
    L is —[C(R4)2]x—(X)y—[C(R4)2]z—,
    
        wherein x is 0, 1 or 2, y is 0 or 1 and z is 0 or 1, with the proviso that x≧y (x is greater or equal to y),
        each R4 is independently selected from the group consisting of H and C1-6-alkyl,
        or two R4 form together with the C-atom connecting them a C3-10-cycloalkyl or a 3 to 7 membered heterocyclyl or two R4 form together with two adjacent C-atoms connecting them a C3-10-cycloalkyl or a 3 to 7 membered heterocyclyl and
        X is selected from the group consisting of O, S, S(O)2, N(H) or N(C1-6-alkyl);
    
    
    R1 is selected from the group consisting of H; F; Cl; CN; C1-6-alkyl; C1-6-alkyl-O(R5) and C1-6-alkyl-N(R5)2,
    
        wherein each R5 is independently selected from H or C1-6-alkyl or two R5 form together with the N-atom connecting them a 3 to 7 membered heterocyclyl;
    
    
    R2 is selected from the group consisting of H; F; Cl; CN; C1-6-alkyl; C1-6-alkyl-O(R6) and C1-6-alkyl-N(R6)2;
    
        wherein each R6 is independently selected from H or C1-6-alkyl or two R6 form together with the N-atom connecting them a 3 to 7 membered heterocyclyl;
    
    
    Ar1 represents aryl or heteroaryl, wherein said aryl or said heteroaryl is substituted by zero or one or two or three substituents R7,
    Ar2 represents aryl or C3-10-cycloalkyl, wherein said aryl or said C3-10-cycloalkyl is substituted by zero or one or two or three substituents R8,
    
        wherein each R7 and each R8 is independently selected from the group consisting of F; Cl; Br; I; NO2; CN; C1-6-alkyl; CF3; CF2H; CFH2; CF2Cl; CFCl2; C(═O)—H; C(═O)—C1-6-alkyl; C(═O)—OH; C(═O)—O—C1-6-alkyl; C(═O)—N(H)(OH); C(═O)—NH2; C(═O)—N(H)(C1-6-alkyl); C(═O)—N(C1-6-alkyl)2; C(═N—OH)—H; C(═N—OH)—C1-6-alkyl; C(═N—O—C1-6-alkyl)-H; C(═N—O—C1-6-alkyl)-C1-6-alkyl; OH; OCF3; OCF2H; OCFH2; OCF2Cl; OCFCl2; O—C1-6-alkyl; 0-C(═O)—C1-6-alkyl; 0-C(═O)—O—C1-6-alkyl; O—(C═O)—N(H)(C1-6-alkyl); 0-C(═O)—N(C1-6-alkyl)2; O—S(═O)2—C1-6-alkyl; O—S(═O)2—OH; O—S(═O)2—O—C1-6-alkyl; O—S(═O)2—NH2; O—S(═O)2—N(H)(C1-6-alkyl); O—S(═O)2—N(C1-6-alkyl)2; NH2; N(H)(C1-6-alkyl); N(C1-6-alkyl)2; N(H)—C(═O)—C1-6-alkyl; N(H)—C(═O)—O—C1-6-alkyl; N(H)—C(═O)—NH2; N(H)—C(═O)—N(H)(C1-6-alkyl); N(H)—C(═O)—N(C1-6-alkyl)2; N(C1-6-alkyl)-C(═O)—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—O—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—NH2; N(C1-6-alkyl)-C(═O)—N(H)(C1-6-alkyl); N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl)2; N(H)—S(═O)2OH; N(H)—S(═O)2—C1-6-alkyl; N(H)—S(═O)2—O—C1-6-alkyl; N(H)—S(═O)2—NH2; N(H)—S(═O)2—N(H)(C1-6-alkyl); N(H)—S(═O)2N(C1-6-alkyl)2; N(C1-6-alkyl)-S(═O)2—OH; N(C1-6-alkyl)-S(═O)2—C1-6-alkyl; N(C1-6-alkyl)-S(═O)2—O—C1-6-alkyl; N(C1-6-alkyl)-S(═O)2—NH2; N(C1-6-alkyl)-S(═O)2—N(H)(C1-6-alkyl); N(C1-6-alkyl)-S(═O)2—N(C1-6-alkyl)2; SH; SCF3; SCF2H; SCFH2; SCF2Cl; SCFCl2; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; S(═O)2—OH; S(═O)2—O—C1-6-alkyl; S(═O)2—NH2; S(═O)2—N(H)(C1-6-alkyl); S(═O)2—N(C1-6-alkyl)2; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; aryl; heteroaryl; O—C3-10-cycloalkyl; O-(3 to 7 membered heterocyclyl); O-aryl; O-heteroaryl; C(═O)—C3-10-cycloalkyl; C(═O)-(3 to 7 membered heterocyclyl); C(═O)-aryl; C(═O)-heteroaryl; S(═O)2—C3-10-cycloalkyl; S(═O)2-(3 to 7 membered heterocyclyl); S(═O)2-aryl; S(═O)2-heteroaryl; S(═O)(═NR13)—C3-10-cycloalkyl; S(═O)(═NR13)—(3 to 7 membered heterocyclyl); S(═O)(═NR13)-aryl and S(═O)(═NR13)-heteroaryl, wherein R13 represents H or C1-6-alkyl;

wherein in each case said C1-6-alkyl may be branched or unbranched; unsubstituted or mono- or polysubstituted; and

wherein in each case said C3-10-cycloalkyl, 3 to 7 membered heterocyclyl aryl and heteroaryl may be unsubstituted or mono- or polysubstituted;

optionally in the form of an individual stereoisomer or a mixture of stereoisomers, in the form of the free compound and/or a physiologically acceptable salt and/or a physiologically acceptable solvate thereof.

    
    




DETAILED DESCRIPTION
The term “single stereoisomer” preferably means in the sense of the present invention an individual enantiomer or diastereomer. The term “mixture of stereoisomers” means in the sense of this invention the racemate and mixtures of enantiomers and/or diastereomers in any mixing ratio.
The compounds according to general formula (I) possess at least 2 stereogenic carbon atoms: the carbon atom bearing R1 and the carbon atom bearing R2.
The compounds according to formula (I) may be stereochemically differentiated according to their relative structural orientation. The compounds wherein the residues R1 and R2 have the same relative orientation, for instance both up (“bold wedge”) or both down (“broken wedge”) are referred within the scope of the present invention as the “cis” diastereomer (scheme 1). The compounds wherein the residues R1 and R2 have a differented relative orientation, for instance R1 up (“bold wedge”) and R2 down (“broken wedge”) or vice versa are referred within the scope of the present invention as the “trans” diastereomer (scheme 2).
Diastereoisomers differ with respect to their physical and chemical properties. Methods to determine the diastereomeric ratio (dr) are well known to the person skilled in the art and include, but are not limited to, NMR-methods.
A diastereomerically pure compound or a diastereomer according to the present invention refers to a stereoisomer, having a diastereomeric ratio of >90:10, particularly >92:8, preferably >95:5, more preferably >98:2 and even more preferably >99:1.
For both diastereomers, two enantiomers are possible.
An enantiomerically pure compound or an enantiomer according to the present invention refers to a stereoisomer, having an enantiomeric excess of >90% ee, particularly >92% ee, preferably >95% ee, more preferably >98% ee and even more preferably >98% ee. A racemic mixture or a racemate refers to an equal mixture of two corresponding enantiomers.
Methods to determine the enantiomeric excess are well known to the person skilled in the art and include, but are not limited to, optical rotary dispersion, circular dichroism, NMR-methods using chiral auxiliaries (“shift reagents”) or separation via chiral HPLC (high performance liquid chromatography, using a chiral stationary phase), chiral GLC (gas-liquid chromatography, using a chiral stationary phase phase) or chiral SFC (supercritical fluid chromatography using a chiral stationary phase).
Determination of the absolute stereochemical structure is well known to the person skilled in the art and includes, but are not limited to, x-ray diffractometry.
The stereogenic information of the compounds of the present invention is described according to their relative chemical structure as as detailed below:

    1) A cis racemic compound (cis-rac) refers to a racemic mixture of two enantiomers as depicted in scheme 1.






    2) A trans racemic compound (trans-rac) refers to a racemic mixture of two enantiomers as depicted in scheme 2.






    3) A cis enantiomer 1 compound (cis-EN1) refers to one single enantiomer as depicted in scheme 3.






    4) A cis enantiomer 2 compound (cis-EN2) refers to the other single enantiomer, which is not cis-EN1 as depicted in scheme 3.






    5) A trans enantiomer 1 compound (trans-EN1) refers to one single enantiomer as depicted in scheme 4.






    6) A trans enantiomer 2 compound (trans-EN2) refers to the other single enantiomer, which is not trans-EN1 as depicted in scheme 4.






The term “physiologically acceptable salt” preferably comprises in the sense of this invention a salt of at least one compound according to the present invention and at least one physiologically acceptable acid or base.
The term “physiologically acceptable solvate” preferably comprises in the sense of this invention an adduct of one compound according to the present invention and/or a physiologically acceptable salt of at least one compound according to the present invention with distinct molecular equivalents of one solvent or more solvents.
The term “C1-6-alkyl” comprise in the sense of this invention acyclic sat. aliphatic hydrocarbon residues, which can be respectively branched or unbranched and can be unsubstituted or can be mono- or polysubstituted, e.g. mono-, di- or trisubstituted, and which contain 1 to 6 carbon atoms, i.e. 1, 2, 3, 4, 5 or 6 carbon atoms. Preferred C1-6-alkyl groups are selected from the group consisting of methyl, ethyl, n-propyl, 2-propyl, n-butyl, isobutyl, sec.-butyl, tert.-butyl, n-pentyl, isopentyl, neopentyl, and n-hexyl.
In relation to the term “C1-6-alkyl” the term “monosubstituted” or “polysubstituted” such as di- or tri-substituted refers in the sense of this invention, with respect to the corresponding groups, to the single substitution or multiple substitution, e.g. disubstitution or trisubstitution, of one or more hydrogen atoms each independently of one another by at least one substituent. The term “polysubstituted” such as di- or tri-substituted with respect to polysubstituted groups such as di- or tri-substituted groups includes the polysubstitution of these groups either on different or on the same atoms, for example trisubstituted on the same carbon atom, as in the case of CF3 or CH2CF3 or at various points, as in the case of CH(OH)—CH2CH2—CHCl2. The multiple substitution can be carried out using the same or using different substituents.
The term “C3-10-cycloalkyl” mean for the purposes of this invention cyclic aliphatic hydrocarbons containing 3, 4, 5, 6, 7, 8, 9 or 10 carbon atoms, respectively, wherein the hydrocarbons in each case can be sat. or unsat. (but not aromatic), unsubstituted or mono- or polysubstituted. The cycloalkyl group can be bound to the respective superordinate general structure via any desired and possible ring member of the cycloalkyl group. The cycloalkyl group can also be condensed with further sat., (partially) unsat., (hetero)cyclic, aromatic or heteroaromatic ring systems, i.e. with cycloalkyl, heterocyclyl, aryl or heteroaryl residues, which in each case can in turn be unsubstituted or mono- or polysubstituted. C3-10-cycloalkyls can furthermore be singly or multiply bridged such as, for example, in the case of adamantyl, bicyclo[2.2.1]heptyl or bicyclo[2.2.2]octyl. Preferred C3-10-cycloalkyl groups are selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, adamantly, cyclopentenyl, cyclohexenyl, cycloheptenyl, cyclooctenyl,




Particularly preferred C3-10-cycloalkyl groups are C3-6-cycloalkyl groups such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopentenyl and cyclohexenyl, in particular cyclopropyl.

The terms “3 to 7-membered heterocyclyl” mean for the purposes of this invention heterocycloaliphatic sat. or unsat. (but not aromatic) residues having 3 to 7, i.e. 3, 4, 5, 6 or 7 ring members, respectively, in which in each case at least one, if appropriate also two or three carbon atoms are replaced by a heteroatom or a heteroatom group each selected independently of one another from the group consisting of O, S, S(═O), S(═O)2, N, NH and N(C1-6-alkyl) such as N(CH3), wherein the ring members can be unsubstituted or mono- or polysubstituted. The cycloalkyl groups can also be condensed with further sat. or (partially) unsat. cycloalkyl or heterocyclyl, aromatic or heteroaromatic ring systems, which in each case can in turn be unsubstituted or mono- or polysubstituted. The heterocyclyl group can be bound to the superordinate general structure via any desired and possible ring member of the heterocycloaliphatic residue if not indicated otherwise.
The term “aryl” means for the purpose of this invention aromatic hydrocarbons having 6 to 14, i.e. 6, 7, 8, 9, 10, 11, 12, 13 or 14 ring members, preferably having 6 to 10, i.e. 6, 7, 8, 9 or 10 ring members, including phenyls and naphthyls. Each aryl residue can be unsubstituted or mono- or polysubstituted. The aryl can be bound to the superordinate general structure via any desired and possible ring member of the aryl residue. The aryl residues can also be condensed with further sat. or (partially) unsat. cycloalkyl or heterocyclyl, aromatic or heteroaromatic ring systems, which can in turn be unsubstituted or mono- or polysubstituted. Examples of condensed aryl residues are benzodioxolanyl and benzodioxanyl. Preferably, aryl is selected from the group consisting of phenyl, 1-naphthyl, 2-naphthyl, fluorenyl and anthracenyl, each of which can be respectively unsubstituted or mono- or polysubstituted. A particularly preferred aryl is phenyl, unsubstituted or mono- or polysubstituted.
The term “heteroaryl” for the purpose of this invention represents a 5-, 6-, 8-, 9- or 10-membered cyclic aromatic residue containing at least 1, if appropriate also 2, 3, 4 or 5 heteroatoms, wherein the heteroatoms are each selected independently of one another from the group S, N and O and the heteroaryl residue can be unsubstituted or mono- or polysubstituted; in the case of substitution on the heteroaryl, the substituents can be the same or different and be in any desired and possible position of the heteroaryl. The binding to the superordinate general structure can be carried out via any desired and possible ring member of the heteroaryl residue if not indicated otherwise. The heteroaryl can also be part of a bi- or polycyclic system having up to 10 ring members, wherein the ring system can be formed with further sat. or (partially) unsat. cycloalkyl or heterocyclyl, aromatic or heteroaromatic ring systems, which can in turn be unsubstituted or mono- or polysubstituted. It is preferable for the heteroaryl residue to be selected from the group consisting of benzofuranyl, benzoimidazolyl, benzothienyl, benzothiadiazolyl, benzothiazolyl, benzotriazolyl, benzooxazolyl, benzooxadiazolyl, quinazolinyl, quinoxalinyl, carbazolyl, quinolinyl, dibenzofuranyl, dibenzothienyl, furyl (furanyl), imidazolyl, imidazothiazolyl, indazolyl, indolizinyl, indolyl, isoquinolinyl, isoxazoyl, isothiazolyl, indolyl, naphthyridinyl, oxazolyl, oxadiazolyl, phenazinyl, phenothiazinyl, phthalazinyl, pyrazolyl, pyridyl (2-pyridyl, 3-pyridyl, 4-pyridyl), pyrrolyl, pyridazinyl, pyrimidinyl, pyrazinyl, purinyl, phenazinyl, thienyl (thiophenyl), triazolyl, tetrazolyl, thiazolyl, thiadiazolyl and triazinyl.
In relation to the terms “C1-6-alkyl”, “C3-10-cycloalkyl”, “3 to 7-membered heterocyclyl” and “3 to 10-membered heterocyclyl”, the term “mono- or polysubstituted” refers in the sense of this invention, with respect to the corresponding residues or groups, to the single substitution or multiple substitution, e.g. disubstitution, trisubstitution, tetrasubstitution, or pentasubstitution, of one or more hydrogen atoms each independently of one another by at least one substituent selected from the group consisting of F; Cl; Br; I; NO2; CN; ═O; ═NH; ═N(OH); ═N(O—C1-6-alkyl); CF3; CF2H; CFH2; CF2Cl; CFCl2; C1-6-alkyl; C(═O)—H; C(═O)—C1-6-alkyl; C(═O)—OH; C(═O)—O—C1-6-alkyl; C(═O)—N(H)(OH); C(═O)—NH2; C(═O)—N(H)(C1-6-alkyl); C(═O)—N(C1-6-alkyl)2; C(═N—OH)—H; C(═N—OH)—C1-6-alkyl; C(═N—O—C1-6-alkyl)-H; C(═N—O—C1-6-alkyl)-C1-6-alkyl; OH; OCF3; OCF2H; OCFH2; OCF2Cl; OCFCl2; O—C1-6-alkyl; 0-C(═O)—C1-6-alkyl; 0-C(═O)—O—C1-6-alkyl; O—(C═O)—N(H)(C1-6-alkyl); 0-C(═O)—N(C1-6-alkyl)2; O—S(═O)2—C1-6-alkyl; 0-S(═O)2—OH; O—S(═O)2—O—C1-6-alkyl; O—S(═O)2—NH2; O—S(═O)2—N(H)(C1-6-alkyl); O—S(═O)2—N(C1-6-alkyl)2; NH2; N(H)(C1-6-alkyl); N(C1-6-alkyl)2; N(H)—C(═O)—C1-6-alkyl; N(H)—C(═O)—O—C1-6-alkyl; N(H)—C(═O)—NH2; N(H)—C(═O)—N(H)(C1-6-alkyl); N(H)—C(═O)—N(C1-6-alkyl)2; N(C1-6-alkyl)-C(═O)—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—O—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—NH2; N(C1-6-alkyl)-C(═O)—N(H)(C1-6-alkyl); N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl)2; N(H)—S(═O)2—OH; N(H)—S(═O)2—C1-6-alkyl; N(H)—S(═O)2—O—C1-6-alkyl; N(H)—S(═O)2—NH2; N(H)—S(═O)2—N(H)(C1-6-alkyl); N(H)—S(═O)2—N(C1-6-alkyl)2; N(C1-6-alkyl)-S(═O)2—OH; N(C1-6-alkyl)-S(═O)2—C1-6-alkyl; N(C1-6-alkyl)-S(═O)2—O—C1-6-alkyl; N(C1-6-alkyl)-S(═O)2—NH2; N(C1-6-alkyl)-S(═O)2—N(H)(C1-6-alkyl); N(C1-6-alkyl)-S(═O)2—N(C1-6-alkyl)2; SH; SCF3; SCF2H; SCFH2; SCF2Cl; SCFCl2; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; S(═O)2—OH; S(═O)2—O—C1-6-alkyl; S(═O)2—NH2; S(═O)2—N(H)(C1-6-alkyl); S(═O)2—N(C1-6-alkyl)2; C3-6-cycloalkyl; 3 to 7 membered heterocyclyl; aryl or heteroaryl. The term “polysubstituted” with respect to polysubstituted residues and groups includes the polysubstitution of these residues and groups either on different or on the same atoms, for example trisubstituted on the same carbon atom, as in the case of CF3, CH2CF3 or 1,1-difluorocyclohexyl, or at various points, as in the case of CH(OH)—CHCl2 or 1-chloro-3-fluorocyclohexyl. A substituent can if appropriate for its part in turn be mono- or polysubstituted. The multiple substitution can be carried out using the same or using different substituents.
Preferred substituents of “C1-6-alkyl” are selected from the group consisting of F; Cl; Br; CF3; C(═O)—NH2; C(═O)—N(H)(C1-6-alkyl); C(═O)—N(C1-6-alkyl)2; C3-6-cycloalkyl or 3 to 7 membered heterocyclyl; OH; O—C1-6-alkyl; NH2; N(H)(C1-6-alkyl); N(C1-6-alkyl)2; N(H)—C(═O)—C1-6-alkyl; N(H)—S(═O)2—C1-6-alkyl; N(C1-6-alkyl)-S(═O)2—C1-6-alkyl; N(H)—S(═O)2—NH2; SH; S—C1-6-alkyl; S(═O)2C1-6-alkyl and S(═O)2—N(H)(C1-6-alkyl).
Preferred substituents of “C3-6-cycloalkyl” and “3 to 7-membered heterocyclyl” are selected from the group consisting of F; Cl; Br; CF3; CN; ═O; C1-6-alkyl; C3-6-cycloalkyl or 3 to 7 membered heterocyclyl; CHO; C(═O)—C1-6-alkyl; CO2H; C(═O)O—C1-6-alkyl; CONH2; C(═O)NH—C1-6-alkyl; C(═O)N(C1-6-alkyl)2; OH; O—C1-6-alkyl; OCF3; O—C(═O)—C1-6-alkyl; NH2; NH—C1-6-alkyl; N(C1-6-alkyl)2; NH—C(═O)—C1-6-alkyl; SH; S—C1-6-alkyl; SCF3; S(═O)2—C1-6-alkyl; S(═O)2OH; S(═O)2O—C1-6-alkyl and S(═O)2—NH—C1-6-alkyl.
In relation to the terms “aryl” and “heteroaryl”, the term “mono- or polysubstituted” refers in the sense of this invention, with respect to the corresponding residues or groups, to the single substitution or multiple substitution, e.g. disubstitution, trisubstitution, tetrasubstitution, or pentasubstitution, of one or more hydrogen atoms each independently of one another by at least one substituent selected from the group consisting of F; Cl; Br; NO2; CN; CF3; CF2H; CFH2; CF2Cl; CFCl2; C1-6-alkyl; C3-6-cycloalkyl; 3 to 7 membered heterocyclyl; aryl; heteroaryl; aryl, heteroaryl, C3-6-cycloalkyl or 3 to 7 membered heterocyclyl, each connected via a C1-8-alkylene; C(═O)H; C(═O)—(C1-6-alkyl); C(═O)—(C3-6-cycloalkyl); C(═O)-(3 to 7 membered heterocyclyl); C(═O)-(aryl); C(═O)-(heteroaryl); C(═O)OH; C(═O)—O(C1-6-alkyl); C(═O)—O(C3-6-cycloalkyl); C(═O)—O (3 to 7 membered heterocyclyl); C(═O)—O(aryl); C(═O)—O(heteroaryl); C(═O)—NH2; C(═O)—N(H)(C1-6-alkyl); C(═O)—N(H)(C3-6-cycloalkyl); C(═O)—N(H)(3 to 7 membered heterocycloalkyl); C(═O)—N(H)(aryl); C(═O)—N(H)(heteroaryl); C(═O)—N(C1-6-alkyl)2; C(═O)—N(C1-6-alkyl)(C3-6-cycloalkyl); C(═O)—N(C1-6-alkyl)(3 to 7 membered heterocyclyl); C(═O)—N(C1-6-alkyl)(aryl); C(═O)—N(C1-6-alkyl)(heteroaryl); OH; ═O; O—(C1-6-alkyl); O—(C3-6-cycloalkyl); O-(3 to 7 membered heterocyclyl); O-(aryl); O-(heteroaryl); OCF3; OCF2H; OCFH2; OCF2Cl; OCFCl2; O—C(═O)—(C1-6-alkyl); O—C(═O)—(C3-6-cycloalkyl); O—C(═O)-(3 to 7 membered heterocyclyl); O—C(═O)-(aryl); C(═O)-(heteroaryl); O—C(═O)—NH2; O—C(═O)—N(H)(C1-6-alkyl); O—C(═O)—N(H)(C3-6-cycloalkyl); O—C(═O)—N(H)(3 to 7 membered heterocyclyl); O—C(═O)—N(H)(aryl); O—C(═O)—N(H)(heteroaryl); O—C(═O)—N(C1-6-alkyl)2; O—C(═O)—N(C1-6-alkyl)(C3-6-cycloalkyl); O—C(═O)—N(C1-6-alkyl)(3 to 7 membered heterocyclyl); O—C(═O)—N(C1-6-alkyl)(aryl); O—C(═O)—N(C1-6-alkyl)(heteroaryl); NH2; N(H)(C1-6-alkyl); N(H)(C3-6-cycloalkyl); N(H)(3 to 7 membered heterocyclyl); N(H)(aryl); N(H)(heteroaryl); N(C1-6-alkyl)2; N(C1-6-alkyl)(C3-6-cycloalkyl); N(C1-6-alkyl)(3 to 7 membered heterocyclyl); N(C1-6-alkyl) (aryl); N(C1-6-alkyl)(heteroaryl); N(H)—C(═O)—(C1-6-alkyl); N(H)—C(═O)—(C3-6-cycloalkyl); N(H)—C(═O)-(3 to 7 membered heterocyclyl); N(H)—C(═O)-(aryl); N(H)—C(═O)-(heteroaryl); N(C1-6-alkyl)-C(═O)—(C1-6-alkyl); N(C1-6-alkyl)-C(═O)—(C3-6-cycloalkyl); N(C1-6-alkyl)-C(═O)-(3 to 7 membered heterocyclyl); N(C1-6-alkyl)-C(═O)-(aryl); N(C1-6-alkyl)-C(═O)-(heteroaryl); N(H)—S(═O)2—(C1-6-alkyl); N(H)—S(═O)2—(C3-6-cycloalkyl); N(H)—S(═O)2-(3 to 7 membered heterocyclyl); N(H)—S(═O)2-(aryl); N(H)—S(═O)2-(heteroaryl); N(C1-4-alkyl)-S(═O)2—(C1-6-alkyl); N(C1-6-alkyl)-S(═O)2—(C3-6-cycloalkyl); N(C1-6-alkyl)-S(═O)2-(3 to 7 membered heterocyclyl); N(C1-6-alkyl)-S(═O)2-(aryl); N(C1-6-alkyl)-S(═O)2-(heteroaryl); N(H)—C(═O)—O(C1-6-alkyl); N(H)—C(═O)—O(C3-6-cycloalkyl); N(H)—C(═O)—O (3 to 7 membered heterocyclyl); N(H)—C(═O)—O(aryl); N(H)—C(═O)—O(heteroaryl); N(C1-6-alkyl)-C(═O)—O(C1-6-alkyl); N(C1-6-alkyl)-C(═O)—O(C3-6-cycloalkyl); N(C1-6-alkyl)-C(═O)—O (3 to 7 membered heterocyclyl); N(C1-6-alkyl)-C(═O)—O(aryl); N(C1-6-alkyl)-C(═O)—O(heteroaryl); N(H)—C(═O)—NH2; N(H)—C(═O)—N(H)(C1-6-alkyl); N(H)—C(═O)—N(H)(C3-6-cycloalkyl); N(H)—C(═O)—N(H)(3 to 7 membered heterocyclyl); N(H)—C(═O)—N(H)(aryl); N(H)—C(═O)—N(H)(heteroaryl); N(C1-6-alkyl)-C(═O)—NH2; N(C1-6-alkyl)-C(═O)—N(H)(C1-6-alkyl); N(C1-6-alkyl)-C(═O)—N(H)(C3-6-cycloalkyl); N(C1-6-alkyl)-C(═O)—N(H)(3 to 7 membered heterocyclyl); N(C1-6-alkyl)-C(═O)—N(H)(aryl); N(C1-6-alkyl)-C(═O)—N(H)(heteroaryl); N(H)—C(═O)—N(C1-6-alkyl)2; N(H)—C(═O)—N(C1-6-alkyl)(C3-6-cycloalkyl); N(H)—C(═O)—N(C1-6-alkyl)(3 to 7 membered heterocyclyl); N(H)—C(═O)—N(C1-6-alkyl)(aryl); N(H)—C(═O)—N(C1-6-alkyl) (heteroaryl); N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl)2; N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl)(C3-6-cycloalkyl); N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl)(3 to 7 membered heterocyclyl); N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl)(aryl); N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl) heteroaryl); SH; S—(C1-6-alkyl); S—(C3-6-cycloalkyl); S-(3 to 7 membered heterocyclyl); S-(aryl); S-(heteroaryl); SCF3; S(═O)2OH; S(═O)—(C1-6-alkyl); S(═O)—(C3-6-cycloalkyl); S(═O)-(3 to 7 membered heterocyclyl); S(═O)-(aryl); S(═O)-(heteroaryl); S(═O)2—(C1-6-alkyl); S(═O)2—(C3-6-cycloalkyl); S(═O)2-(3 to 7 membered heterocyclyl); S(═O)2-(aryl); S(═O)2-(heteroaryl); S(═O)2—O(C1-6-alkyl); S(═O)2—O(C3-6-cycloalkyl); S(═O)2—O (3 to 7 membered heterocyclyl); S(═O)2—O(aryl); S(═O)2—O(heteroaryl); S(═O)2—N(H)(C1-6-alkyl); S(═O)2—N(H)(C3-6-cycloalkyl); S(═O)2—N(H)(3 to 7 membered heterocyclyl); S(═O)2—N(H)(aryl); S(═O)2—N(H)(heteroaryl); S(═O)2—N(C1-6-alkyl)2; S(═O)2—N(C1-6-alkyl)(C3-6-cycloalkyl); S(═O)2—N(C1-6-alkyl)(3 to 7 membered heterocyclyl); S(═O)2—N(C1-6-alkyl)(aryl); S(═O)2—N(C1-6-alkyl)(heteroaryl); S(═O)(═NR13)—C3-10-cycloalkyl; S(═O)(═NR13)-(3 to 7 membered heterocyclyl); S(═O)(═NR13)-aryl and S(═O)(═NR13)-heteroaryl, wherein R13 represents H or C1-6-alkyl.
Preferred substituents of “aryl” and “heteroaryl” are selected from the group consisting of F; Cl; CF3; CN; C1-6-alkyl; C(═O)—OH; C(═O)—O—C1-6-alkyl; CO—NH2; C(═O)—N(H)C1-6-alkyl; C(═O)—N(C1-6-alkyl)2; OH; O—C1-6-alkyl; O—C(═O)—C1-6-alkyl; OCF3; OCHF2; OCH2F; NH2; N(H)C1-6-alkyl; N(C1-6-alkyl)2; N(H)—C(═O)—C1-6-alkyl; N(C1-6-alkyl)-C(═O)C1-6-alkyl; N(H)—S(═O)2—C1-6-alkyl; N(C1-6-alkyl)-S(═O)2(C1-6-alkyl); N(H)C(═O)NH2; N(H)—C(═O)—N(H)C1-6-alkyl; N(H)—C(═O)—N(C1-6-alkyl)2; N(C1-6-alkyl)-C(═O)—NH2; N(C1-6-alkyl)-C(═O)—N(H)C1-6-alkyl; N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl)2; S(═O)2C1-6-alkyl; S(═O)2—NH2; S(═O)2—N(H)C1-6-alkyl and S(═O)2—N(C1-6-alkyl)2.
The compounds according to the invention are defined by substituents, for example by R1, R2 and R3 (1st generation substituents) which are for their part if appropriate themselves substituted (2nd generation substituents). Depending on the definition, these substituents of the substituents can for their part be resubstituted (3rd generation substituents). If, for example, R1=a C1-6-alkyl (1st generation substituent), then the C1-6-alkyl can for its part be substituted, for example with a NH— C1-6-alkyl (2nd generation substituent). This produces the functional group R1=(C1-6-alkyl-NH—C1-6-alkyl). The NH—C1-6-alkyl can then for its part be resubstituted, for example with Cl (3rd generation substituent). Overall, this produces the functional group R1═C1-6-alkyl-NH—C1-6-alkyl, wherein the C1-6-alkyl of the NH—C1-6-alkyl is substituted by Cl. However, in a preferred embodiment, the 3rd generation substituents may not be resubstituted, i.e. there are then no 4th generation substituents. If a residue occurs multiply within a molecule, then this residue can have respectively different meanings for various substituents: if, for example, both R1 and R2 denote a 3 to 10 membered heterocyclyl, then the 3 to 10 membered heterocyclyl can e.g. represent morpholinyl for R1 and can represent piperazinyl for R2.
Within the scope of the present invention, the symbols




used in the formulae denotes a link of a corresponding residue to the respective superordinate general structure.

In one embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that m represents 0 or 1. Preferably, m represents 1.
In another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that n represents 0.
In yet another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that m represents 1 and n represents 0, so the compound is represented by general formula (II),




In a preferred embodiment of the of the first aspect of the invention, the compound according to general formula (I) is characterized in that m represents 1, n represents 0, and Y is bond, CH2 or C(CH3)2.
In a particularly preferred embodiment of the of the first aspect of the invention, the compound according to general formula (I) is characterized in that m represents 1, n represents 0 and Y is CH2,
so the compound is represented by general formula (IIa),




In another particularly preferred embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that m represents 1, n represents 0 and Y is bond,
so the compound is represented by general formula (IIb),




In another embodiment of the first aspect of the invention, the compound according to the invention is one diastereomer. Preferably, the compound according to the invention is the cis-diastereomer. Still preferably, the compound according to the invention is the trans-diastereomer.
Thus, one preferred embodiment of the first aspect of the invention is characterized in that the compound of general formula (I), (II), (IIa) or (IIb) is one diastereomer.
The cis-diastereomer or the trans-diastereomer may be in the form of a single enantiomer or in the form of an enantiomeric mixture, preferably of a racemate.
In yet another embodiment of the first aspect of the invention, the compound according to the invention is in only one enantiomeric form. Preferably, the compound according to the invention is the racemate of the cis-diastereomer (cis-rac) or a single enantiomer of the cis-diastereomer (cis-EN1 or cis-EN2). Still preferably, the compound according to the invention is the racemate of the trans-diastereomer (trans-rac) or a single enantiomer of the trans-diastereomer (trans-EN1 or trans-EN2).
Thus, one preferred embodiment of the first aspect of the invention is characterized in that the compound of general formula (I), (II), (IIa) or (IIb) is one enantiomer.
In one preferred embodiment of the first aspect of the invention is characterized in that the compound of general formula (I), (II), (IIa) or (IIb) is the enantiomer, which exhibits at room temperature and a wavelength of 589 nm (Na-D-line) a positive optical rotation in dichloromethane or methanol.
In another preferred embodiment of the first aspect of the invention is characterized in that the compound of general formula (I), (II), (IIa) or (IIb) is the enantiomer, which exhibits at room temperature and a wavelength of 589 nm (Na-D-line) a negative optical rotation in dichloromethane or methanol.
In another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that R2 represents H, CH3, C2H5, CH2CH2CH3, CH(CH3)2, CH2OH, CH2OCH3, CH2NH2, CH2N(H)CH3 or CH2N(CH3)2.
Preferably, R2 represents H, CH3 or C2H5.
In a preferred embodiment, the compound according to formula (I) is characterized in that m represents 1, n represents 0, Y is CH2, and R2 represents H, CH3 or C2H5.
In another preferred embodiment, the compound according to formula (I) is characterized in that m represents 1, n represents 0, Y is bond, and R2 represents H, CH3 or C2H5.
In another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that R1 represents H, CH3, C2H5, CH2CH2CH3, CH2OCH3 or CH2N(CH3)2.
Preferably, R1 represents H, CH3, C2H5 or CH2OCH3. Particularly preferred are compounds wherein R1 represents CH3.
In a preferred embodiment, the compound according to formula (I) is characterized in that m represents 1, n represents 0, Y is CH2, and R1 represents H, CH3, C2H5 or CH2OCH3.
In another preferred embodiment, the compound according to formula (I) is characterized in that m represents 1, n represents 0, Y is bond, and R1 represents H, CH3, C2H5 or CH2OCH3.
In another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that Ar1 represents phenyl or pyridinyl, substituted by zero or one or two or three substituents R7.
In preferred embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that Ar1 represents phenyl or pyridinyl, substituted by one or two substituents R7.
Preferably, R7 is independently selected from the group consisting of F; Cl; CN; C1-6-alkyl; CF3; CF2H; CFH2; C(═O)—C1-6-alkyl; C(═O)—OH; C(═O)—O—C1-6-alkyl; C(═O)—N(H)(OH); C(═O)—NH2; C(═O)—N(H)(C1-6-alkyl); C(═O)—N(C1-6-alkyl)2; OH; OCF3; OCF2H; OCFH2; OCF2Cl; OCFCl2; O—C1-6-alkyl; NH2; N(H)(C1-6-alkyl); N(C1-6-alkyl)2; N(H)—C(═O)—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—C1-6-alkyl; N(H)—S(═O)2—C1-6-alkyl; SCF3; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; S(═O)2—NH2; S(═O)2—N(H)(C1-6-alkyl); S(═O)2—N(C1-6-alkyl)2; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; O—C3-10-cycloalkyl and 0-(3 to 7 membered heterocyclyl).
In yet another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that Ar1 represents phenyl or pyridinyl, substituted by zero or one or two or three substituents R7,
wherein each R7 is independently selected from the group consisting of F; Cl; CN; C1-6-alkyl; CF3; CF2H; CFH2; C(═O)—C1-6-alkyl; C(═O)—OH; C(═O)—O—C1-6-alkyl; C(═O)—N(H)(OH); C(═O)—NH2; C(═O)—N(H)(C1-6-alkyl); C(═O)—N(C1-6-alkyl)2; OH; OCF3; OCF2H; OCFH2; OCF2Cl; OCFCl2; O—C1-6-alkyl; NH2; N(H)(C1-6-alkyl); N(C1-6-alkyl)2; N(H)—C(═O)—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—C1-6-alkyl; N(H)—S(═O)2—C1-6-alkyl; SCF3; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; S(═O)2—NH2; S(═O)2—N(H)(C1-6-alkyl); S(═O)2—N(C1-6-alkyl)2; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; O—C3-10-cycloalkyl and 0-(3 to 7 membered heterocyclyl).
Preferably, Ar1 represents phenyl or 2-pyridinyl.
In another preferred embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that Ar1 represents subformula SF-I




wherein X is CH or N,

    R10 is selected from the group consisting of CF3; CF2H; CFH2; OCF3; OCF2H; OCFH2; cyclopropyl; Ocyclopropyl; CH(CH3)2; OCH(CH3)2; C(CH3)3 and OC(CH3)3; and
    R11 is selected from the group consisting of H; F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CH(CH3)CH2CH3; CH2CH2CH2CH3; CH2CH(CH3)2; C(CH3)3; CF3; CF2H; CFH2; OCF3; OCH3; OCH2CH3; OCH(CH3)2; S(═O)—CH3 and S(═O)2—CH3.


More preferably, R10 is CF3; CF2H; CFH2; OCF3; OCF2H or OCFH2. Even more preferably, R10 is CF3 or OCF3.
In yet another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that L is —[C(R4)2]—(X)y—[C(R4)2]z—,
wherein x is 0, 1 or 2, y is 0 or 1 and z is 0, with the proviso that x≧y;
each R4 is independently selected from the group consisting of H and C1-6-alkyl, or two R4 form together with the C-atom connecting them a C3-10-cycloalkyl or a 3 to 7 membered heterocyclyl or two R4 form together with two adjacent C-atoms connecting them a C3-10-cycloalkyl or a 3 to 7 membered heterocyclyl,

X is selected from the group consisting of O, S, S(O)2, N(H) or N(C1-6-alkyl).

In a preferred embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that L is —[C(R4)2]x—(X)y—[C(R4)2]z—, wherein z is 0 and the sum (x+y) is 0 or 2.
Preferably, the compound according to general formula (I) is characterized in that L is —[C(R4)2]x—(X)y—[C(R4)2]z—,
wherein x is 0, 1 or 2, y is 0 or 1 and z is 0, with the proviso that x≧y;
each R4 is independently selected from the group consisting of H and C1-6-alkyl, or two R4 form together with the C-atom connecting them a C3-10-cycloalkyl, and
X is O.
More preferably, the compound according to general formula (I) is characterized in that L is —[C(R4)2]x—(X)y—[C(R4)2]z—,
wherein x is 0 or 1, y is 0 or 1 and z is 0, with the proviso that x≧y;
each R4 is independently selected from the group consisting of H and C1-6-alkyl, or two R4 form together with the C-atom connecting them a C3-10-cycloalkyl, and
X is O.
In a preferred embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that
L is bond (x=y=z=0); CH2 (x=1; each R4=H; y=z=0); CH2CH2 (x=2; each R4=H; y=z=0); C(CH3)2 (x=2; R4=H and R4=CH3; y=z=0); CH2C(CH3)2 (x=2; R4=H and R4=CH3; y=z=0); C(CH3)2CH2 (x=1; each R4=CH3; y=z=0); CH(CH3) (x=1; R4=H and R4=CH3; y=z=0); CH2O (x=1; each R4=H; y=1; X=O; z=0); C(CH3)2O (x=1; each R4=CH3; y=1; X=O; z=0); CH(CH3)O (x=1; R4=H and R4=CH3; y=1; X=O; z=0);




(x=1; two R4 form together with the C-atom connecting them a C3-cycloalkyl; y=z=0); or





(x=1; two R4 form together with the C-atom connecting them a C3-cycloalkyl; y=1; X=O; z=0).

In case, L contains an oxygen atom, the compound according to the invention characterized in that the oxygen atom is directly bond to Ar2. Therefore, the structural element -L-Ar2 is represented by —Ar2 (L=bond); —CH2—Ar2; —C(CH3)2—Ar2; —CH(CH3)—Ar2; —CH2O—Ar2; —C(CH3)2O—Ar2; —CH(CH3)O—Ar2;




Preferably L is bond, CH2; C(CH3)2; CH2CH2; CH2C(CH3)2; C(CH3)2CH2; CH2O or C(CH3)2O, more preferably L is bond or CH2O.
In another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that Ar2 is phenyl or cyclopropyl.
In another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that Ar2 represents phenyl, substituted by one or two substituents R8,

    
    
        wherein each R8 is independently selected from the group consisting of F; Cl; CN; C1-6-alkyl; CF3; CF2H; CFH2; OCF3; OCF2H; OCFH2; O—C1-6-alkyl; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; aryl; heteroaryl; O—C3-10-cycloalkyl; O-(3 to 7 membered heterocyclyl); O-aryl; O-heteroaryl; C(═O)—C3-10-cycloalkyl; C(═O)-(3 to 7 membered heterocyclyl); C(═O)-aryl; C(═O)-heteroaryl; S(═O)2—C3-10-cycloalkyl; S(═O)2-(3 to 7 membered heterocyclyl); S(═O)2-aryl; S(═O)2-heteroaryl; S(═O)(═NR13)—C3-10-cycloalkyl; S(═O)(═NR13)-(3 to 7 membered heterocyclyl); S(═O)(═NR13)-aryl and S(═O)(═NR13)-heteroaryl, wherein R13 represents H or C1-6-alkyl.
    
    
    Preferably, R8 is selected from the group consisting of F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CH(CH3)CH2CH3; CH2CH2CH2CH3; CF3; CF2H; CFH2; OCF3; OCF2H; OCFH2; OCH3; OCH2CH3; OCH2CH2CH3; OCH(CH3)2; S(═O)CH3; S(═O)CH2CH3; S(═O)2CH3; S(═O)2CH2CH3; cyclopropyl; O-cyclopropyl; oxetanyl; 1,1-dioxidothietanyl; (oxetanyl)oxy; (1,1-dioxidothietanyl)oxy; 2-oxopyrrolidin-1-yl; 2-oxopiperidin-1-yl; azetidine-1-carbonyl; pyrrolidine-1-carbonyl; piperidine-1-carbonyl; pyridinyl, pyrimidinyl; (pyridinyl)oxy, (pyrimidinyl)oxy; imidazolyl; triazinyl; pyrazolyl; N-methyl-pyrazolyl; methoxypyridinyl; hydroxypyridinyl; 2-oxopyridinyl; 3-oxo-2,3-dihydro-1H-1,2,4-triazol-1-yl.


In yet another embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that Ar2 represents subformula SF-II




wherein

o is 0 or 1, preferably o is 1; and

R12 is selected from the group consisting of H; F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CF3; CF2H; CFH2; OCF3; OCH3; OCH2CH3; OCH(CH3)2; cyclopropyl and Ocyclopropyl.

In another particularly preferred embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that

    m represents 1, n represents 0, Y is CH2;
    R1 represents H, CH3, C2H5 or CH2OCH3;
    R2 represents H, CH3 or C2H5;
    Ar1 represents subformula SF-I,






wherein X is CH or N,

    R10 is selected from the group consisting of CF3; CF2H; CFH2; OCF3; OCF2H and OCFH2; and
    R11 is selected from the group consisting of H; F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CH(CH3)CH2CH3; CH2CH2CH2CH3; CH2CH(CH3)2; C(CH3)3; CF3; CF2H; CFH2; OCF3; OCH3; OCH2CH3; OCH(CH3)2; S(═O)—CH3 and S(═O)2—CH3;
    L is bond; and
    Ar2 represents phenyl, substituted by one or two substituents R8,
    
        wherein each R8 is independently selected from the group consisting of F; Cl; CN; C1-6-alkyl; CF3; CF2H; CFH2; OCF3; OCF2H; OCFH2; O—C1-6-alkyl; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; aryl; heteroaryl; O—C3-10-cycloalkyl; O-(3 to 7 membered heterocyclyl); O-aryl; O-heteroaryl; C(═O)—C3-10-cycloalkyl; C(═O)-(3 to 7 membered heterocyclyl); C(═O)-aryl; C(═O)-heteroaryl; S(═O)2—C3-10-cycloalkyl; S(═O)2-(3 to 7 membered heterocyclyl); S(═O)2-aryl; S(═O)2-heteroaryl; S(═O)(═NR13)—C3-10-cycloalkyl; S(═O)(═NR13)-(3 to 7 membered heterocyclyl); S(═O)(═NR13)-aryl and S(═O)(═NR13)-heteroaryl, wherein R13 represents H or C1-6-alkyl.
    
    


In another particularly preferred embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that

    m represents 1, n represents 0, Y is bond;
    R1 represents H, CH3, C2H5 or CH2OCH3;
    R2 represents H, CH3 or C2H5;
    Ar1 represents subformula SF-I,






wherein X is CH or N,

    R10 is selected from the group consisting of CF3; CF2H; CFH2; OCF3; OCF2H and OCFH2; and
    R11 is selected from the group consisting of H; F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CH(CH3)CH2CH3; CH2CH2CH2CH3; CH2CH(CH3)2; C(CH3)3; CF3; CF2H; CFH2; OCF3; OCH3; OCH2CH3; OCH(CH3)2; S(═O)—CH3 and S(═O)2—CH3;
    L is bond; and
    Ar2 represents phenyl, substituted by one or two substituents R8, wherein each R8 is independently selected from the group consisting of F; Cl; CN; C1-6-alkyl; CF3; CF2H; CFH2; OCF3; OCF2H; OCFH2; O—C1-6-alkyl; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; aryl; heteroaryl; O—C3-10-cycloalkyl; O-(3 to 7 membered heterocyclyl); O-aryl; O-heteroaryl; C(═O)—C3-10-cycloalkyl; C(═O)-(3 to 7 membered heterocyclyl); C(═O)-aryl; C(═O)-heteroaryl; S(═O)2—C3-10-cycloalkyl; S(═O)2-(3 to 7 membered heterocyclyl); S(═O)2-aryl; S(═O)2-heteroaryl; S(═O)(═NR13)—C3-10-cycloalkyl; S(═O)(═NR13)-(3 to 7 membered heterocyclyl); S(═O)(═NR13)-aryl and S(═O)(═NR13)-heteroaryl, wherein R13 represents H or C1-6-alkyl.


In yet another particularly preferred embodiment of the first aspect of the invention, the compound according to general formula (I) is characterized in that

    m represents 1, n represents 0, Y is bond or CH2;
    R1 represents H, CH3, C2H5 or CH2OCH3;
    R2 represents H, CH3 or C2H5;
    Ar1 represents subformula SF-I,






wherein X is CH or N,

    R10 is selected from the group consisting of CF3; CF2H; CFH2; OCF3; OCF2H and OCFH2; and
    R11 is selected from the group consisting of H; F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CH(CH3)CH2CH3; CH2CH2CH2CH3; CH2CH(CH3)2; C(CH3)3; CF3; CF2H; CFH2; OCF3; OCH3; OCH2CH3; OCH(CH3)2; S(═O)—CH3 and S(═O)2—CH3;
    L is bond; and
    Ar2 represents subformula SF-II






wherein

    o is 0 or 1, preferably o is 1; and
    R12 is selected from the group consisting of H; F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CF3; CF2H; CFH2; OCF3; OCH3; OCH2CH3; OCH(CH3)2; cyclopropyl and Ocyclopropyl.


Particularly preferred compounds according to the invention are selected from the group consisting of

    1 2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-furan
    2 2-[[2-(4-Chlorophenyl)-4-methyl-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine
    3 2-(4-Chlorophenyl)-4-[[2-methyl-5-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran
    4 2-(4-Chlorophenyl)-4-[[2-ethyl-5-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran
    5 4-Methyl-2-(4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    6 2-(4-Chloro-2-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    7 2-(4-Chlorophenyl)-5-methyl-5-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    8 2-(4-Chlorophenyl)-2-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    9 2-(4-Chlorophenyl)-4-[[2-isopropyl-5-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran
    10 3-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    11 4-Methyl-2-(2-methyl-5-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    12 4-Methyl-2-[3-methylsulfonyl-5-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran
    13 2-(5-Fluoro-2-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    14 4-Methyl-2-(3-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    15 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    16 4-Methyl-2-(4-methyl-3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    17 2-(4-Fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    18 [[2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-4-yl]-methyl]-dimethyl-amine
    19 2-(4-Chlorophenyl)-4-(methoxymethyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    20 2-(2-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    21 4-Methyl-2-(3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    22 4-Methyl-2-(2-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    23 2-(4-Chloro-2-methyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    24 2-(4-Chloro-3-methoxy-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    25 2-(3-Chloro-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    26 2-(4-Chlorophenyl)-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    27 4-Methyl-2-[2-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran
    28 2-(4-Chlorophenyl)-4-(phenylmethoxy-methyl)-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    29 4-Methyl-2-[4-methylsulfonyl-3-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran
    30 2-(4-Chloro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    31 2-(3-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    32 2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    33 2-(3-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran
    34 6-(4-Chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    35 2-(4-Chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran
    36 2-Cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    37 2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    38 2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran
    39 2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    40 2-[(4-Chloro-phenoxy)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    41 2-[(4-Chlorophenyl)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    42 2-[3,4-Bis(methylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    43 1-[4-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-phenyl]-1H-[1,2,4]triazole
    44 2-Fluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
    45 2-Fluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzamide
    46 2-(4-Chlorophenyl)-2-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    47 4-[[3-Fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran
    48 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    49 2-[(2-Fluoro-4-methylsulfonyl-phenoxy)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    50 2-[(3-Fluoro-4-methylsulfonyl-phenoxy)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    51 2-[[2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine
    52 2-(2-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    53 4-Methyl-2-[3-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    54 3-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
    55 4-Methyl-2-(2-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    56 4-Methyl-2-[4-methylsulfonyl-2-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    57 3-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
    58 2,2-Difluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-1,3-benzodioxole
    59 2-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
    60 5-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-2,3-dihydro-benzofuran
    61 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran
    62 2-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
    63 4-[[3-(Difluoro-methyl)-phenyl]sulfonyl]-2-(3-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
    64 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran
    65 4-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
    66 5-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
    67 2-(2-Cyclopropyl-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    68 2-Methyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole
    69 2-[2-Fluoro-4-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    70 2-Ethyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole
    71 2-[[4-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-phenyl]sulfonyl]-ethanol
    72 2-[4-Chloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    73 2-[[4-Methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine
    74 2-(2-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    75 2-(3-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
    76 2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran
    77 2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran
    78 4-[[3-(Difluoro-methyl)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
    79 2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran
    80 4-[(3-Cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
    81 2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran
    82 4-[[3-(Difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
    83 2-[4-(Cyclopropylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran

optionally in the form of a single stereoisomer or a mixture of stereoisomers, in the form of the free compound and/or a physiologically acceptable salt or solvate thereof.



Within the scope of the invention, it is understood that the compounds according the aforesaid list may be in the form of a single stereoisomer or any mixture of stereoisomers.
For instance, the given compound 2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 38),




represents

cis-rac-2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran:





[(2R,4S) and (2S,4R)-2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran],

and

trans-rac-2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran:





[(2S,4S) and (2R,4R)-2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran], as well as each individual stereoisomer or any other mixture thereof.

Furthermore, preference may be given to compounds according to the invention that cause at least a 50% inhibition, which is present at a concentration of 3 μM, in a fluorescent assay for CaV2.2 channels with HEK293 cells in which human CaV2.2 channels were stably expressed at a concentration of less 3 μM, preferably less than 1000 nM, particularly preferably less than 300 nM, most particularly preferably less than 100 nM, even more preferably less than 75 nM, additionally preferably less than 50 nM, most preferably less than 10 nM.
In the process, the Ca2+ influx is quantified in the FLIPR assay with the aid of a Ca2+-sensitive dye (type Fluo-4, Molecular Probes Europe BV, Leiden, the Netherlands) in a fluorescent imaging plate reader (FLIPR 3, Molecular Devices, Sunnyvale, USA), as described hereinafter.
The present invention further relates to a compound according to the present invention for CaV2.2 calcium channel regulation, preferably for use in CaV2.2 calcium channel blockage. The present invention therefore further relates to a compound according to the present invention for the prophylaxis and/or treatment of disorders and/or diseases which are mediated, at least in part, at least in part, by CaV2.2 channels. The term “disorders and/or diseases which are mediated, at least in part, by CaV2.2 channels”, is intended to include each of or all of the disease states.
In another aspect of the present invention, the invention therefore also provides pharmaceutical compositions, containing at least one compound according to the invention and optionally one or more suitable, pharmaceutically compatible auxiliaries and/or, if appropriate, one or more further pharmacologically active compounds.
The pharmaceutical composition according to the invention may be found as a liquid, semisolid or solid pharmaceutical form, for example in the form of injection solutions, drops, juices, syrups, sprays, suspensions, tablets, patches, capsules, plasters, suppositories, ointments, creams, lotions, gels, emulsions, aerosols or in multiparticulate form, for example in the form of pellets or granules, if appropriate pressed into tablets, decanted in capsules or suspended in a liquid, and also be administered as much.
In addition to at least one compound according to the invention, if appropriate in the form of one of its pure stereoisomers, in particular enantiomers or diastereomers, its racemate or in the form of mixtures of the stereoisomers, in particular the enantiomers or diastereomers, in any desired mixing ratio, or if appropriate in the form of a corresponding salt or respectively in the form of a corresponding solvate, the pharmaceutical composition according to the invention conventionally contains further physiologically compatible pharmaceutical auxiliaries which can for example be selected from the group consisting of excipients, fillers, solvents, diluents, surface-active substances, dyes, preservatives, blasting agents, slip additives, lubricants, aromas and binders.
The selection of the physiologically compatible auxiliaries and also the amounts thereof to be used depend on whether the pharmaceutical composition is to be applied orally, subcutaneously, parenterally, intravenously, intraperitoneally, intradermally, intramuscularly, intranasally, buccally, rectally or locally, for example to infections of the skin, the mucous membranes and of the eyes. Preparations in the form of tablets, dragées, capsules, granules, pellets, drops, juices and syrups are preferably suitable for oral application; solutions, suspensions, easily reconstitutable dry preparations and also sprays are preferably suitable for parenteral, topical and inhalative application. The compounds according to the invention used in the pharmaceutical composition according to the invention in a repository in dissolved form or in a plaster, agents promoting skin penetration being added if appropriate, are suitable percutaneous application preparations. Orally or percutaneously applicable preparation forms can release the respective compound according to the invention also in a delayed manner.
The pharmaceutical compositions according to the invention are prepared with the aid of conventional means, devices, methods and process known in the art. The amount to be administered to the patient of the respective compounds according to the invention of the above-indicated general formula I may vary and is for example dependent on the patient's weight or age and also on the type of application, the indication and the severity of the disorder. Conventionally 0.001 to 100 mg/kg, preferably 0.05 to 75 mg/kg, particularly preferably 0.05 to 50 mg of at least one such compound according to the invention are applied per kg of the patient's body weight.
CaV2.2 channels are believed to be involved in a variety of diseases or disorders in mammals such as humans. These include pain (e.g.; acute pain, chronic pain, visceral pain, headache pain, inflammatory pain, mixed pain), stroke (the neuronal damage resulting from head trauma), epilepsy, mood disorders, schizophrenia, neurodegenerative disorders.
Another embodiment of the present invention is at least one compound according the present invention for the treatment and/or prophylaxis of one or more disorders selected from the group consisting of pain, preferably pain selected from the group consisting of acute pain, chronic pain, visceral pain, headache pain, inflammatory pain and mixed pain; stroke (the neuronal damage resulting from head trauma); mood disorders; epilepsy; schizophrenia, and neurodegenerative disorders.
Another embodiment of the present invention is at least one compound according to the present invention for the treatment and/or prophylaxis of pain, in particular acute pain and/or chronic pain and/or visceral pain and/or headache pain and/or inflammatory pain and/or mixed pain. Acute pain according to the invention might include nociceptive pain and post-operative or surgical pain. Chronic pain according to the invention might include peripheral neuropathic pain such as post-herpetic neuralgia, traumatic nerve injury, nerve compression or entrapment, small fibre neuropathy, diabetic neuropathy, neuropathic cancer pain, failed back surgery Syndrome, trigeminal neuralgia, phantom limb pain; neuroma pain, complex regional pain syndrome, chronic arthritic pain and related neuralgias, and pain associated with cancer, chemotherapy, HIV and HIV treatment-induced neuropathy; central neuropathic pain such as multiple sclerosis related pain, Parkinson disease related pain, post-stroke pain, post-traumatic spinal cord injury pain, and pain in dementia; musculoskeletal pain such as osteoarthritic pain and fibromyalgia syndrome. In treating osteoarthritic pain, joint mobility will also improve as the underlying chronic pain is reduced. Thus, at least one compound for treatment of osteoarthritic pain inherently will also improve joint mobility in patients suffering from osteoarthritis. Visceral pain according to the invention might include interstitial cystitis, irritable bowel syndrome, Crohn's disease and chronic pelvic pain syndrome. Inflammatory pain according to the invention might include rheumatoid arthritis and endometriosis. Headachepain according to the invention might include migraine, cluster headache, tension headache syndrome, facial pain and headache caused by other diseases. Mixed pain according to the invention might include lower back pain, neck and shoulder pain, burning mouth syndrome and complex regional pain syndrome.
In another embodiment of the invention, at least one compound according to the present invention is particularly suitable for the treatment and/or prophylaxis of mood disorders. Mood disorders according to the invention might include anxiety disorder, social anxiety disorder, panic disorder, specific phobias, for example, specific animal phobias, social phobias, obsessive-compulsive disorder, agoraphobia, post-traumatic stress syndrome, addiction (including dependence, withdrawal and/or relapse of medication, including opioids, but also drugs such as cocaine, opioids, alcohol and nicotine), generalised anxiety disorders, single episodic or recurrent major depressive disorders and dysthymic disorders, or bipolar disorders, for example, bipolar I disorder, bipolar II disorder and cyclothymic disorder.
In another embodiment of the invention, at least one compound according to the present invention is particularly suitable for the treatment and/or prophylaxis of epilepsy. Epilepsy according to the invention might include partial seizures such as temporal lobe epilepsy, absence seizures generalized seizures, and tonic/clonic seizures.
In yet another embodiment of the invention, at least one compound according to the present invention is particularly suitable for the treatment and/or prophylaxis of neurodegenerative disorders. Neurodegenerative disorders according to the invention might include Parkinson's disease, Alzheimer's disease, multiple sclerosis, neuropathies, Huntington's disease, presbycusis and amyotrophic lateral sclerosis (ALS).
Particularly preferably, at least one compound according to the present invention is suitable for the treatment and/or prophylaxis of one or more disorders and/or diseases selected from the group consisting of pain, preferably of pain selected from the group consisting of acute pain, chronic pain, visceral pain, headache pain, inflammatory pain and mixed pain; migraine; depression; neurodegenerative diseases, preferably selected from the group consisting of multiple sclerosis, Alzheimer's disease, Parkinson's disease and Huntington's disease; cognitive dysfunctions, preferably cognitive deficiency states, particularly preferably memory disorders; medication dependency; misuse of medication; withdrawal symptoms in medication dependency; development of tolerance to medication, preferably development of tolerance to natural or synthetic opioids; drug dependency; misuse of drugs; withdrawal symptoms in drug dependency; alcohol dependency; misuse of alcohol and withdrawal symptoms in alcohol dependency.
Another embodiment of the present invention therefore relates to use of at least one compound according to the present invention for the preparation of a pharmaceutical composition for the treatment and/or prophylaxis of one or more disorders or diseases, particularly selected from the group consisting of pain, preferably pain selected from the group consisting of acute pain, chronic pain, visceral pain, headache pain, inflammatory pain and mixed pain; stroke; mood disorders; epilepsy; schizophrenia, and neurodegenerative disorders.
Another aspect of the present invention is a method of treatment and/or prophylaxis of disorders and/or diseases in a mammal, preferably of disorders and/or diseases selected from the group consisting of pain, preferably pain selected from the group consisting of acute pain, chronic pain, visceral pain, headache pain, inflammatory pain and mixed pain; stroke; mood disorders; epilepsy; schizophrenia, and neurodegenerative disorders, which comprises administering an effective amount of at least one compound according to the present invention to the mammal.
All preferred embodiments of the first aspect of the invention are preferred vice versa for the other aspects and embodiments.
The effectiveness against pain can be shown, for example, in the Bennett or Chung model (Bennett, G. J. and Xie, Y. K., A peripheral mononeuropathy in rat that produces disorders of pain sensation like those seen in man, Pain 1988, 33(1), 87-107; Kim, S. H. and Chung, J. M., An experimental model for peripheral neuropathy produced by segmental spinal nerve ligation in the rat, Pain 1992, 50(3), 355-363), by tail flick experiments (e.g. according to D'Amour and Smith (J. Pharm. Exp. Ther. 72, 74 79 (1941)) or by the formalin test (e.g. according to D. Dubuisson et al., Pain 1977, 4, 161-174).
EXAMPLES
The compounds according to the invention can be prepared in the manner described below. The following examples further illustrate the invention but are not to be construed as limiting its scope.
All starting materials which are not explicitly described were either commercially available (the details of suppliers such as for example Acros, Avocado, Aldrich, Apollo, Bachem, Fluka, FluoroChem, Lancaster, Manchester Organics, MatrixScientific, Maybridge, Merck, Rovathin, Sigma, TCI, Oakwood, etc. can be found in the Symyx® Available Chemicals Database of MDL, San Ramon, US or the SciFinder® Database of the ACS, Washington D.C., US, respectively, for example) or the synthesis thereof has already been described precisely in the specialist literature (experimental guidelines can be found in the Reaxys® Database of Elsevier, Amsterdam, NL or the SciFinder® Database of the ACS, Washington D.C., US, repspectively, for example) or can be prepared using the conventional methods known to the person skilled in the art.
The reactions were, if necessary, carried out under an inert atmosphere (mostly N2). The number of equivalents of reagents and the amounts of solvents employed as well as the reaction temperatures and times can vary slightly between different reactions carried out by analogous methods. The work-up and purification methods were adapted according to the characteristic properties of each compound and can vary slightly for analogous methods. The yields of the compounds prepared are not optimized.
All the intermediate products and exemplary compounds were analytically characterized by means of 1H-NMR spectroscopy. In addition, mass spectrometry tests (MS, m/z for [M+H]+) were carried out for all the exemplary compounds and selected intermediate products.
The indication “equivalents” (“eq.” or “eq” or “equiv.”) means molar equivalents, “RT” or “rt” means room temperature T (23±7° C.), “M” are indications of concentration in mol/l, “aq.” means aqeous, “sat.” means saturated, “sol.” means solution, “conc.” means concentrated and “anhydr.” means anhydrous. The mixing ratios of solvents are usually stated in the volume/volume ratio.
FURTHER ABBREVIATIONS
BINAP=2,2′-bis(diphenylphosphino)-1,1′-binaphthyl; CC=column chromatography; COSY=correlation spectroscopy; d=day(s); DCE=1,2-dichloroethane; DCM=dichloromethane; DEA=diethylamine; DEAD=diethylazodicarboxylat; DIPEA=N,N-diisopropylethylamine; DMF=N,N-dimethylformamide; ee=enantiomeric excess; Et2O=diethyl ether; EtOAc=ethyl acetate; h=hour(s); HATU=1-[bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridinium 3-oxid hexafluorophosphate; HMBC=heteronuclear multiple-bond correlation spectroscopy; HMQC=heteronuclear multiple quantum coherence spectroscopy; IPA=iso-propylamine; LAH=lithium aluminiumhydride; LiHMDS=Lithium hexymethyldisilazide; min=minute(s); MeCN=acetonitrile; MeOH=methanol; MS=methanesulfonyl; NMP=N-methyl-2-pyrrolidone; NOE=Nuclear Overhauser Effect; NOESY=Nuclear Overhauser effect spectroscopy; PE=petroleum ether; RM=reaction mixture; RT=room temperature; TEA=triethylamine; TFA=trifluoroacetic acid; THF=tetrahydrofuran.

Instruments:

1H-NMR-spectra (including NOESYs) were recorded at 400 MHz on a Bruker Avance-400 spectrometer or on Agilent 300 & 400 MHz spectrometer.

Analytical Chiral HPLCs were Measured on:

Agilent 1260 Quart. Pump: G1311C, autosampler, ColCom, DAD: Agilent G4212B or

Waters 2695 separation module Detector 2996 & Agilent 1200 series with G 1315B detector

Preparative HPLC were Performed on:

Waters 2545 Quaternary gradient module with Autosampler2707 & Waters2545 Quaternary gradient module with Manual mode.

Analytical SFC were performed on Thar SFC analytical.

Preparative SFC were performed THAR-SFC 80.

Instruments Employed for Chiral Separations:

Fraction Collector: Gilson 215 Liquid Handler; HPLC instrument modules: Shimadzu LC8-A preparative pumps, Shimadzu SCL-10Avp system controller, Shimadzu SPD-10Avp UV-VIS detector.

1. Synthesis of Example Compounds
2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-furan (Example 1)




Step 1: 1-(4-Chlorophenyl)but-3-en-1-ol
Zinc dust (18.6 g, 284.7 mmol, 2.0 eq) was added to an ice-cooled stirred solution of 4-chlorobenzaldehyde (20 g, 142.3 mmol, 1.0 eq) and 3-bromoprop-1-ene (18.5 mL, 213.5 mmol, 1.5 eq) in sat. NH4Cl (125 mL) and THF (150 mL). The RM was stirred at RT for 6 h. After completion of the reaction, the RM was filtered on celite bed and the filtrate was diluted with Et2O and H2O. The aq. layer was extracted with Et2O (2×200 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to get 20 g of desired compound which was directly used to next step without further purification.
1-(4-Chlorophenyl)-2-(oxiran-2-yl)ethanol
m-Chloroperbenzoic acid (26.1 g, 151.1 mmol, 2.0 eq) was added to an ice-cold solution of 1-(4-chlorophenyl)but-3-en-1-ol (25.0 g, 137.4 mmol, 1.0 eq) in DCM (50 mL) and the RM was allowed to warm up to RT and then stirred for 16 h. The RM was diluted with EtOAc and H2O. The aq. layer was extracted with EtOAc (2×150 mL). Combined organic layers were washed with sat. NaHCO3 solution and organic layer was dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude product which was then purified by CC to afford desired 1-(4-chlorophenyl)-2-(oxiran-2-yl)ethanol (20 g, 74%) as a pale yellow oil.
5-(4-Chlorophenyl)tetrahydrofuran-3-ol
Concentrated sulfuric acid (5 mL) was added to an ice-cold mixture of 1-(4-chlorophenyl)-2-(oxiran-2-yl)ethanol (22.0 g, 111.1 mmol, 1.0 eq) in 1,4-dioxane (300 mL) and stirred for 6 h at RT. The reaction mass was poured onto crushed ice, neutralized by addition of solid NaHCO3, extracted with DCM (2×150 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 5-(4-chlorophenyl)tetrahydrofuran-3-ol (10 g, 46%) as a brown oil.
5-(4-Chlorophenyl)tetrahydrofuran-3-yl methanesulfonate
Methanesulfonyl chloride (2.9 mL, 29.4 mmol, 1.5 eq) was added to an ice-cold solution of 5-(4-chlorophenyl)tetrahydrofuran-3-ol (3.9 g, 19.6 mmol, 1.0 eq) and TEA (8.17 mL, 58.78 mmol, 3.0 eq) in DCM (70 mL) and the RM was stirred at the same temperature for 2 h. The RM was quenched with H2O. The aq. layer was extracted with DCM (2×1000 mL) and the combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to afford crude product which was purified by CC to afford 5-(4-chlorophenyl)tetrahydrofuran-3-yl methanesulfonate (3.8 g, 71%) as a brown liquid.
2-(4-Chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydrofuran
K2CO3 (3.8 g, 27.8 mmol, 2.0 eq) was added to a solution of 5-(4-chlorophenyl)tetrahydrofuran-3-yl methanesulfonate (3.8 g g, 13.9 mmol, 1.0 eq) and 3-(trifluoromethyl)benzenethiol (3.2 mL, 27.8 mmol, 2 eq) in DMF (70 mL). The RM was stirred at RT for 1 h. Then the RM was quenched with ice and the aq. layer was extracted with EtOAc (2×150 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 2-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)-tetrahydrofuran (3.1 g, 62%) as a pale yellow color oil.
2-(4-Chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydrofuran
To a stirred ice cold solution of 2-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydrofuran (3.8 g, 10.6 mmol, 1.0 eq) in THF:H2O (3:1) (120 mL) oxone (19.6 g, 31.8 mmol, 3.0 eq) was added and RM was stirred at RT for 4 h. After completion of the reaction it was diluted with H2O and the product was extracted with EtOAc. The organic layer was washed with H2O, sat. brine and dried over anhydr. sodium sulfate, filtered and evaporated under reduced pressure to get crude product which was further purified by CC to afford 2-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydrofuran (3.8 g, 92%) as a white solid.
2-(4-Chlorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydrofuran
To a stirred solution of 2-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydrofuran (2.2 g, 5.6 mmol, 1 eq) in DMF (12 mL), NaH (0.45 g, 11.3 mmol, 2.0 eq) was added portion wise at 0° C. and then stirred at RT for 1 h. The RM was again cooled to 0° C. and methyl iodide (0.53 mL, 8.5 mmol, 1.5 eq) was added. Finally, the RM was stirred at RT for 2 h. After completion of the reaction it was quenched with crushed ice and diluted with EtOAc. The organic layer was separated, washed with chilled H2O (5×20 mL), brine and finally dried over anhydr. Na2SO4. Two diastereomers were separated by reverse phase preparative HPLC and the relative configuration (cis or trans) was determined by 1H NMR and NOE experiments.
cis-isomer (SC-101, SC-102): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.53 (s, 3H), 2.23-2.30 (1H), 2.33-2.51 (1H), 3.67 (d, 1H), 4.63 (d, 1H), 4.95 (dd, 1H), 7.12 (d, 2H), 7.35 (d, 2H), 7.92 (t, 1H), 8.09 (s, 1H), 8.20 (d, 1H), 8.26 (d, 1H).
On irradiating CH3 proton “positive” NOE was observed with OCH proton.
trans-isomer (SC-103, SC-104): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.41 (s, 3H), 1.78 (dd, 1H), 3.11 (dd, 1H), 3.91 (d, 1H), 4.39 (d, 1H), 4.92 (dd, 1H), 7.39 (s, 4H), 7.95-7.98 (m, 1H), 8.20-23 (m, 2H), 8.30-8.32 (m, 1H).
On irradiating CH3 proton “no” NOE was observed with OCH proton.
Enantiomers from cis and trans diastereomers were separated by chiral HPLC, using chiral pack AD-H column and Ethanol/DEA: (100/0.1) as mobile phase to obtain two cis enantiomers (SC-101 and SC-102) and two trans enantiomers (SC-103 and SC-104).
SC-101: (0.14 g, 6% yield, yellow solid, 1st eluted enantiomer; cis-EN1).
SC-102: (0.14 g, 6% yield, yellow solid, 2nd eluted enantiomer; cis-EN2).
SC-103: (0.15 g, 7% yellow solid, 1st eluted enantiomer; trans-EN1).
SC-104: (0.15 g, 7% yellow solid, 2nd eluted enantiomer; trans-EN2).
2-[[2-(4-Chlorophenyl)-4-methyl-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine (Example 2)




2-(4-Chlorophenyl)tetrahydro-2H-pyran-4-ol
Concentrated sulfuric acid (5.2 mL) was added to an ice-cold mixture of but-3-en-1-ol (6.4 mL, 71.4 mmol, 2.0 eq) and 4-chlorobenzaldehyde (5 g, 35.7 mmol, 1.0 eq) and the mixture was stirred for 14 h at RT. The RM was poured onto crushed ice, neutralized by addition of solid NaHCO3, extracted with DCM (2×150 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford desired compound (3.4 g, 45%) as a colorless oil.
2-(4-Chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
Methanesulfonyl chloride (0.34 mL, 3.5 mmol, 1.5 eq) was added to an ice-cold solution of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (0.5 g, 2.4 mmol, 1 eq) and TEA (0.5 mL, 3.5 mmol, 1.5 eq) in DCM (10 mL) and the RM was allowed to warm up to RT and then stirred for 3 h. The RM was diluted with DCM and H2O. The aq. layer was extracted with DCM (2×50 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (0.4 g, 59%) as a yellow oil.
2-((2-(4-Chlorophenyl)tetrahydro-2H-pyran-4-yl)thio)-6-(trifluoromethyl)pyridine
K2CO3 (10.8 g, 78.2 mmol, 2.0 eq) was added to the stirred solution of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (11.3 g, 39.1 mmol, 1.0 eq) and 6-(trifluoromethyl)pyridine-2-thiol (7.0 g, 39.1 mmol, 1.0 eq) in DMF (100 mL). The RM was stirred for 4 h at 80° C. Then the RM was cooled to RT and then diluted with EtOAc and H2O. The aq. layer was extracted with EtOAc (2×150 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 2-((2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl)thio)-6-(trifluoromethyl)pyridine (4.5 g, 31%) as a pale yellow color oil.
2-((2-(4-Chlorophenyl)tetrahydro-2H-pyran-4-yl)sulfonyl)-6-(trifluoromethyl)pyridine
Sodium periodate (3.4 g, 16.1 mmol, 3.0 eq) and RuCl3 (0.02 g, 0.11 mmol, 0.02 eq) were added to the solution of 2-((2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl)thio)-6-(trifluoromethyl)pyridine (2.0 g, 5.4 mmol, 1.0 eq) in H2O (15 mL) and MeCN (10 mL). The RM was stirred for 2 h at RT. After completion of the reaction the RM was diluted with EtOAc and H2O. The aq. layer was extracted with EtOAc (2×75 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 2-((2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl)sulfonyl)-6-(trifluoromethyl)pyridine (1.5 g, 69%) as a white solid.
2-((2-(4-Chlorophenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)-6-(trifluoromethyl)pyridine
At −78° C. LiHMDS (1M, 8.8 mL, 8.9 mmol, 2.0 eq) was added to a solution of 2-((2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl)sulfonyl)-6-(trifluoromethyl)pyridine (1.8 g, 4.4 mmol, 1.0 eq) in dry THF (30 mL) and it was stirred at same temperature for 30 min. CH3I (0.56 mL, 8.9 mmol, 2.0 eq) was added and the RM was stirred at −78° C. for 1 h. After completion of the reaction the reaction mass was quenched with sat. NH4Cl solution and extracted with EtOAc (2×75 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford cis (0.5 g, 27%, colorless liquid) and trans isomer (0.64 g, 35%, white solid). The relative configuration (cis or trans) was determined by 1H NMR and NOE experiments.
cis-isomer (SC-104, SC-105): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.55-1.60 (4H), 1.77-1.82 (1H), 1.93-1.99 (1H), 2.10-2.20 (1H), 3.68-3.75 (1H), 4.01-4.06 (1H), 4.56-4.58 (1H), 7.32-7.34 (2H), 7.38-7.41 (2H), 8.31-8.37 (2H), 8.45-8.50 (1H).
On irradiating OCH proton “positive” NOE was observed with CH3 protons and vice versa.
trans-isomer (SC-106, SC-107): 1H NMR (600 MHz, DMSO-d6, δ ppm): 1.17 (s, 3H), 1.63-1.68 (1H), 1.83-1.89 (1H), 2.39-2.41 (1H), 2.47-2.51 (1H), 3.98-4.01 (1H), 4.17-4.20 (m, 1H), 5.06-5.08 (1H), 7.36-7.37 (2H), 7.41-7.42 (2H), 8.33-8.34 (1H), 8.43-8.45 (1H), 8.49-8.52 (1H).
On irradiating OCH proton “no” NOE was observed with CH3 protons and vice versa. Enantiomers of cis and trans diastereoisomers were separated by chiral HPLC, using chiral pack AD-H column and Ethanol/DEA: (100/0.1) as mobile phase to obtain two desired cis enantiomers (SC-104 and SC-105) and two trans enantiomers (SC-106 and SC-107).
SC-104: (0.157 g, 8.5%, off white solid, 1st eluted enantiomer; cis-EN1).
SC-105: (0.180 g, 9.7%, off white solid, 2nd eluted enantiomer; cis-EN2).
SC-106: (0.131 g, 7.1%, off white solid, 1st eluted enantiomer; trans-EN1).
SC-107: (0.148 g, 8.1%, off white solid, 2nd eluted enantiomer; trans-EN2).
6-(Trifluoromethyl)pyridine-2-thiol




Methyl 3-((6-(trifluoromethyl)pyridin-2-yl)thio)propanoate
Sodium ethoxide (1.9 g, 27.6 mmol, 1.0 eq) was added to an ice cold solution of 2-chloro-6-(trifluoromethyl)pyridine (5.0 g, 27.6 mmol, 1.0 eq) and methyl 3-mercaptopropanoate (3.6 mL, 33.1 mmol, 1.2 eq) in DMF (50 mL) and then RM was stirred at 80° C. for 14 h. After completion of the reaction the RM was diluted with EtOAc and H2O. The aq. layer was extracted with EtOAc (2×100 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford methyl 3-((6-(trifluoromethyl)pyridin-2-yl)thio)propanoate (3.5 g, 48%) as a yellow oil.
6-(Trifluoromethyl)pyridine-2-thiol
Sodium methoxide (5.2 g, 94.3 mmol, 2.5 eq) was added to an ice cold solution of methyl 3-((6-(trifluoromethyl)pyridin-2-yl)thio)propanoate (10 g, 37.9 mmol, 1.0 eq) in MeOH (100 mL) and then RM was stirred at 80° C. for 2 h. After completion of the reaction the RM was concentrated under reduced pressure to give the crude product of 6-(trifluoromethyl)pyridine-2-thiol (7 g) which was directly used to next step without further purification.
2-(4-Chlorophenyl)-4-((2-methyl-5-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (Example 3)




2-Bromo-5-(trifluoromethyl)benzenethiol
To a stirred solution of triphenylphosphine (16.2 g, 61.9 mmol, 4.0 eq) in DCM (40 mL), DMF (0.4 mL) was added at 0° C. followed by addition of 2-bromo-5-(trifluoromethyl)benzene-1-sulfonyl chloride (5.0 g, 15.5 mmol, 1.0 eq). The RM was allowed to stir for 2 h at RT. The mixture was again cooled to 0° C. and 1N aq. HCl was added and stirred at RT for 1 h. The organic layer was separated and concentrated in vacuo. The residue was triturated with hexane and filtered. The filtrate was discarded and residue was taken in Et2O and 2N aq. NaOH. The aq. layer was separated and acidified with 1N HCl and extracted with Et2O (3×100 mL). The combined organic layers were washed with brine and dried over anhydr. Na2SO4, filtered and concentrated to get 2-bromo-5-(trifluoromethyl)benzenethiol (3.2 g) as a brown oil, which was used as such for the next step without further purification.
4-((2-Bromo-5-(trifluoromethyl)phenyl)thio)-2-(4-chlorophenyl)tetrahydro-2H-pyran
K2CO3 (3.4 g, 24.9 mmol, 2.0 eq) was added to the stirred solution of 2-bromo-5-(trifluoromethyl)benzenethiol (3.2 g, 12.5 mmol, 1.0 eq) and 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (3.6 g, 12.5 mmol, 1.0 eq) in DMF (40 mL). The RM was stirred for 2 h at 80° C. Then the RM was cooled to RT and then diluted with EtOAc and water. The aq. layer was extracted with EtOAc (2×100 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 4-((2-bromo-5-(trifluoromethyl)phenyl)thio)-2-(4-chlorophenyl)tetrahydro-2H-pyran (1.8 g, 32%) as a pale yellow color oil.
4-((2-Bromo-5-(trifluoromethyl)phenyl)sulfonyl)-2-(4-chlorophenyl)tetrahydro-2H-pyran
To a stirred solution of 4-((2-bromo-5-(trifluoromethyl)phenyl)thio)-2-(4-chlorophenyl)tetrahydro-2H-pyran (0.5 g, 1.1 mmol, 1.0 eq) in a mixture of solvent of MeCN (20 mL), H2O (6.6 mL), sodium periodate (0.71 g, 3.3 mmol, 3.0 eq) and RuCl3 (0.005 g, 0.022 mmol, 0.02 eq) were added and stirred for 30 min. After completion, the RM was filtered over celite bed and washed with H2O. Filtrate was extracted with EtOAc and combined organic layers were dried over anhydr. Na2SO4, filtered and evaporated under reduced pressure to get crude product which was then purified by CC to afford pure 4-((2-bromo-5-(trifluoromethyl)phenyl)sulfonyl)-2-(4-chlorophenyl)tetrahydro-2H-pyran (0.4 g, 75%) as a yellow sticky liquid.
2-(4-Chlorophenyl)-4-((2-methyl-5-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To a stirred solution of 4-((2-bromo-5-(trifluoromethyl)phenyl)sulfonyl)-2-(4-chlorophenyl)tetrahydro-2H-pyran (0.5 g, 1.0 mmol, 1.0 eq) in 1,4-dioxane was added K3PO4 (0.44 g, 2.1 mmol, 2.0 eq) and stirred at RT for 5 min and deoxygenated with Ar.
To this RM was added 2,4,6-trimethyl-1,3,5,2,4,6-trioxatriborinane (0.324 g, 2.57 mmol, 2.5 eq) and Pd(PPh3)2Cl2 (0.07 g, 0.10 mmol, 0.1 eq) and again deoxygenated. The RM was then heated to 130° C. for 40 min and TLC was checked. After completion, the RM was filtered through celite and washed with EtOAc. Organic part was washed with water, brine and dried over anhydr. Na2SO4, filtrated and concentrated to get crude product which was then purified by CC to afford pure 2-(4-chlorophenyl)-4-((2-methyl-5-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.25 g, 58%) as a single diastereomer (yellow oil). The relative configuration (trans) was determined by 1H NMR and NOE experiments.
trans-isomer (SC-108, SC-109): 1H NMR (400 MHz, CDCl3, δ ppm): 1.95-1.99 (1H), 2.05-2.12 (2H), 2.27-2.31 (1H), 2.72 (s, 3H), 3.37-3.40 (1H), 3.81-3.86 (1H), 4.11-4.16 (1H), 5.06-5.10 (1H), 7.23-7.25 (2H), 7.30-7.33 (2H), 7.49-7.51 (1H), 7.77-7.79 (1H), 8.29 (s, 1H).
On irradiating SCH proton “no” NOE was observed with OCH proton but “positive” NOE was observed with ortho-substituted protons of 4-chlororphenyl moiety.
Two enantiomers of this single diastereomer were separated by chiral HPLC, using chiral pack AD-H column and Ethanol/DEA: (100/0.1) as mobile phase to obtain two trans enantiomers (SC-108 and SC-109).
SC-108: (0.206 g, 47.9%, off white solid, 1st eluted enantiomer; trans-EN1)
SC-109: (0.101 g, 23.4%, off white solid, 2nd eluted enantiomer; trans-EN2)
2-(4-Chlorophenyl)-4-[[2-ethyl-5-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran (Example 4)




To a stirred solution of trans-2-(4-chlorophenyl)-4-((2-methyl-5-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.5 g, 3.58 mmol, 1.0 eq) in THF (15 mL), KOt-Bu (0.811 g, 7.17 mmol, 2.0 eq) was added portion wise at −78° C. and the mixture was stirred for 5 min. CH3I (1.02 g, 7.17 mmol, 2.0 eq) was added dropwise at the same temperature and stirred at −78° C. for 1 h. Then it was stirred at RT for further 1.5 h. After completion of the reaction, it was quenched with crushed ice and diluted with EtOAc. The inorganics were filtered through celite bed. Organic layers were separated, washed with chilled H2O (5×20 mL), brine and finally dried over anhydr. Na2SO4 and filtrated. Purification was done by reverse phase prep HPLC to obtain 2-(4-chlorophenyl)-4-((2-ethyl-5-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran as a single diastereomer (cis). The relative configuration (cis) was determined by 1H NMR, COSY and NOE experiments.
cis-isomer (SC-110, SC-111): 1H NMR (400 MHz, CDCl3, δ ppm): 1.25-1.29 (3H), 1.49-1.58 (1H), 1.69-1.75 (2H), 1.96-2.00 (1H), 3.08-3.14 (2H), 3.51-3.58 (1H), 3.84-3.88 (1H), 4.10-4.13 (1H), 4.43-4.45 (1H), 7.33-7.35 (2H), 7.38-7.40 (2H), 7.82-7.84 (1H), 8.03 (s, 1H), 8.08-8.10 (1H).
On irradiating SCH proton “positive” NOE was observed with OCH proton.
Two enantiomers of this single diastereomer were separated by chiral HPLC, using chiral pack AD-H column and ethanol/DEA: (100/0.1) as mobile phase to obtain two cis enantiomers (SC-110 and SC-111).
SC-110: (0.065 g, 4.2%, off white solid, 1st eluted enantiomer; cis-EN1).
SC-111: (0.039 g, 2.5%, off white solid, 2nd eluted enantiomer; cis-EN2).
2-(4-Chlorophenyl)-5-methyl-5-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 7)







1-(4-Chlorophenyl)-4-iodobutan-1-one
To a stirred solution of 4-chloro-1-(4-chlorophenyl)butan-1-one (1.0 g, 4.6 mmol, 1.0 eq) in acetone (20 mL), NaI (3.5 g, 23.1 mmol, 5.0 eq) was added and the mixture was refluxed for 48 h. The solvent was evaporated and the crude product was diluted with water, extracted with Et2O (2×100 mL). Combined organic layers were separated and washed with brine, dried over anhydr. Na2SO4, filtered and the solvent was evaporated under reduced pressure. Purification of the residue by flash-chromatography afforded the desired product (0.85 g, 63%) as white solid.
(4-(4-Chlorophenyl)-4-oxobutyl)triphenylphosphonium iodide
To a stirred solution of 1-(4-chlorophenyl)-4-iodobutan-1-one (2.0 g, 6.5 mmol, 1.0 eq) in toluene (30 mL) triphenylphophine (1.7 g, 6.5 mmol, 1.0 eq) was added and the mixture was heated up to 120° C. and continued for 16 h. The solution was decanted and washed with toluene, hexane, and dissolved in dry DCM and evaporated under reduced pressure to get crude product (2.1 g) as a yellow solid which was taken as such for the next step.
(4-(4-Chlorophenyl)-4-hydroxybutyl)triphenylphosphonium iodide
To a stirred solution of (4-(4-chlorophenyl)-4-oxobutyl)triphenylphosphonium iodide (7.0 g, 12.3 mmol, 1.0 eq) in MeOH (95 mL), sodium borohydride (0.47 g, 12.3 mmol, 1.0 eq) was added and refluxed for 6 h at 65° C. The RM was quenched with water and concentrated and the crude product was extracted with DCM. The organic layer was dried over anhydr. Na2SO4, filtered and the solvent was evaporated under reduced pressure to give crude alcohol (6.2 g) as an off white solid.
2-(4-Chlorophenyl)-5-methylenetetrahydro-2H-pyran
To a stirred solution of (4-(4-chlorophenyl)-4-hydroxybutyl)triphenylphosphonium iodide (6.0 g, 10.5 mmol, 1.0 eq) in MeCN (260 mL) DBU was added at RT. The mixture was refluxed for 2 h and then paraformaldehyde (3.1 g, 104.9 mmol, 10 eq) was added in one portion. After being refluxed for another 10 h, the RM was poured into water and extracted with DCM (3×200 mL). The combined extract was washed with water, dried over anhydr. Na2SO4, filtered and the solvent was evaporated under reduced pressure to give pale yellow oil which was purified by CC using to afford 2-(4-chlorophenyl)-5-methylenetetrahydro-2H-pyran (0.9 g, 38%) as a colorless liquid.
6-(4-Chlorophenyl)dihydro-2H-pyran-3(4H)-one
To a stirred solution of 2-(4-chlorophenyl)-5-methylenetetrahydro-2H-pyran (1.3 g, 6.2 mmol, 1.0 eq) in acetone (35 mL) and H2O (35 mL) at 0° C., potassium osmatedihydrate (0.08 g, 0.21 mmol, 0.03 eq) was added and the mixture was stirred for 5 min. Then sodium periodate (5.4 g, 25.0 mmol, 4.0 eq) was added in 4 portions at the same temperature and the reaction was continued for 2 h. The RM was evaporated to dryness, diluted with water and extracted with DCM (3×50 mL). The organic portion was washed with H2O, sat. brine, dried over anhydr. Na2SO4, filtered and the solvent was removed under reduced pressure at low temperature to give crude 6-(4-chlorophenyl)dihydro-2H-pyran-3(4H)-one (1.2 g) as a white solid which was taken as such for the next step.
6-(4-Chlorophenyl)tetrahydro-2H-pyran-3-ol
To a stirred solution of 6-(4-chlorophenyl)dihydro-2H-pyran-3(4H)-one (1.2 g, 5.7 mmol, 1.0 eq) in dry MeOH (60 mL), sodiumborohydride (0.43 g, 11.4 mmol, 2.0 eq) was added at 0° C. and the mixture was stirred for 1 h. The RM was quenched with ice water and MeOH was removed under reduced pressure. The crude product was extracted with EtOAc (3×50 mL). The combined organic layers were washed with water, sat. brine and dried over anhydr. Na2SO4 and filtered. The crude 6-(4-chlorophenyl)tetrahydro-2H-pyran-3-ol (1.2 g, off white solid) was taken as such for the next step.
6-(4-Chlorophenyl)tetrahydro-2H-pyran-3-yl methanesulfonate
Methanesulfonyl chloride (0.81 mL, 10.3 mmol, 2.0 eq) was added to an ice-cold solution of 6-(4-chlorophenyl)tetrahydro-2H-pyran-3-ol (1.1 g, 5.1 mmol, 1.0 eq) and TEA (1.43 mL, 10.3 mmol, 3.0 eq) in DCM (30 mL). The RM was stirred at the same temperature for 2 h. The RM was then quenched with H2O. The aq. layer was extracted with DCM (2×100 mL), combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude 6-(4-chlorophenyl)tetrahydro-2H-pyran-3-yl methanesulfonate (1.5 g) as a brown liquid which was taken as such for the next step.
2-(4-Chlorophenyl)-5-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
K2CO3 (0.2 g, 1.4 mmol, 2.0 eq) was added to the solution of 6-(4-chlorophenyl)tetrahydro-2H-pyran-3-yl methanesulfonate (0.2 g, 0.69 mmol, 1.0 eq) and trifluromethyl benzene thiol (0.20 g, 1.1 mmol, 1.6 eq) in DMF (6 mL). The RM was heated up to 80° C. for 2 h. Then the RM was cooled to RT and then quenched with ice. The aq. layer was extracted with EtOAc (2×30 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 2-(4-chlorophenyl)-5-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (0.12 g, 47%) as a yellow liquid.
2-(4-Chlorophenyl)-5-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To a stirred solution of 2-(4-chlorophenyl)-5-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (0.8 g, 2.2 mmol, 1.0 eq) in THF:H2O (45:15) (60 mL) oxone (4.01 g, 6.5 mmol, 3.0 eq) was added and RM was stirred at RT for 4 h. After completion of the reaction, the RM was diluted with water and extracted with EtOAc. The combined organic layers were washed with H2O, sat. brine and dried over anhydr. Na2SO4, filtered and the solvent was evaporated under reduced pressure to get crude product which was further purified by CC to afford 2-(4-chlorophenyl)-5-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.58 g, 66%) as a white solid.
2-(4-Chlorophenyl)-5-methyl-5-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
To a stirred solution of 2-(4-chlorophenyl)-5-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.45 g, 1.1 mmol, 1.0 eq) in THF (30 mL), KOt-Bu (0.25 g, 2.2 mmol, 2.0 eq) was added portion wise at −78° C. and the mixture was stirred for 5 min. CH3I (0.32 g, 2.2 mmol, 2.0 eq) was added dropwise at the same temperature and stirred at −78° C. for 1 h. Then it was stirred at RT for 1.5 h. After completion of the reaction, the RM was quenched with crushed ice and diluted with EtOAc. The inorganics were filtered through celite bed. Organic layer was separated, washed with chilled H2O (5×20 mL), brine and finally dried over anhydr. Na2SO4. Purification was done by reverse phase prep HPLC to obtain 2-(4-chlorophenyl)-5-methyl-5-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (0.14 g, 31%, off white solid) as a single diastereomer.
The relative configuration was determined by 1H NMR, HMBC, HMQC and NOESY experiments.
1H NMR (400 MHz, MeOD, δ ppm): 1.22 (s, 3H), 1.64-1.68 (1H), 1.78-2.02 (2H), 2.47-2.52 (1H), 3.60-3.64 (1H), 4.34-4.38 (1H), 4.44-4.48 (1H), 7.10-7.13 (2H), 7.24-7.26 (2H), 7.83-7.86 (1H), 8.05-8.07 (1H), 8.19-8.25 (1H).
2-(4-Chloro-2-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 6)




2-(2-bromo-4-chlorophenyl)tetrahydro-2H-pyran-4-ol
Concentrated H2SO4 was added drop wise to an ice-cold mixture of 3-buten-1-ol (6.2 mL, 68.5 mmol, 2.0 eq) and 2-bromo-4-chlorobenzaldehyde (7.5 g, 34.25 mmol, 1.0 eq) and the RM was allowed to warm to RT slowly and stirred for 16 h. Then the RM was poured into ice water, basified with sat. NaHCO3 solution and extracted with DCM (2×100 mL), combined organic layer was dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure. The crude product was purified by CC to afford 2-(2-bromo-4-chlorophenyl)tetrahydro-2H-pyran-4-ol (3.6 g, 36%) as deep brown liquid.
2-(2-bromo-4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
Methanesulfonyl chloride (3.8 mL, 48.88 mmol, 1.5 eq) was added to an ice-cold solution of 2-(2-bromo-4-chlorophenyl)tetrahydro-2H-pyran-4-ol (9.5 g, 32.59 mmol, 1.0 eq) and NEt3 (14.0 mL, 100.63 mmol, 3.1 eq) in DCM (90 mL). The reaction mixture was stirred at 0° C. for 2 h. The RM was quenched with H2O and extracted with DCM (2×150 mL), combined organic layer was dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to give crude product which was purified by CC to afford 2-(2-bromo-4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (4.1 g, 34%) as sticky liquid.
2-(2-bromo-4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
K2CO3 (4.59 g, 33.24 mmol, 3.0 eq) was added to the solution of 2-(2-bromo-4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (4.08 g 11.08 mmol, 1.0 eq) and 3-trifluoromethylthiol (2.26 mL, 16.64 mmol, 1.5 eq) in DMF (70 mL). The reaction mixture was stirred at 80° C. for 2 h. Then the RM was cooled to RT and then quenched with ice. The aq. layer was extracted with EtOAc (2×150 mL), combined organic layer was dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 2-(2-bromo-4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (2.68 g, 53%) as pale yellow oil.
2-(2-bromo-4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To a stirred solution of 2-(2-bromo-4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (2.68 g, 5.94 mmol, 1.0 eq) in THF (90 mL) and H2O (30 mL) was added oxone (14.59 g, 23.77 mmol, 4.0 eq) and the RM was stirred at RT for 1 h. Then the reaction mixture was diluted with H2O, extracted with EtOAc (2×100 mL), combined organic layer was washed with H2O (50 mL) and brine (50 mL), dried over anhydr. Na2SO4, filtered and the solvent was evaporated under reduced pressure to get crude compound which was further purified by CC to afford 2-(2-bromo-4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (2.6 g, 90%) as white solid.
2-(2-bromo-4-chlorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To a stirred solution of 2-(2-bromo-4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (2.55 g, 5.14 mmol, 1.0 eq) in THF (120 mL) was added t-BuOK (2.32 g, 20.56 mmol, 4.0 eq) followed by 18-crown-6 (5.43 g, 20.56 mmol, 4.0 eq) at −78° C. The RM was stirred at the same temperature for 15 min. Then MeI (1.29 mL, 20.56 mmol, 4.0 eq) was added to the RM at −78° C. and the mixture was allowed to warm gradually to RT and stirred for 2 h. Then the RM was diluted with H2O and the crude product was extracted with EtOAc (2×50 mL). Combined organic layer was washed with H2O (50 mL), brine (50 mL), dried over anhydr. Na2SO4, filtered and the solvent was evaporated under reduced pressure to get crude product which was further purified by CC to afford 2-(2-bromo-4-chlorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.92 g, 73%) as off-white sticky solid.
2-(4-chloro-2-(methylsulfonyl)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To a stirred solution of 2-(2-bromo-4-chlorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.6 g, 3.22 mmol, 1.0 eq) in DMSO (40 mL) was added sodiummethanesulfinite (0.428 g, 4.186 mmol, 1.3 eq), and L-proline sodium salt (0.088 g, 0.643 mmol, 0.2 eq). The mixture was degassed for 10 min, CuI (123 mg, 0.643 mmol, 0.2 eq) was added and the RM was heated to 90° C. for 16 h in a sealed tube. Then the RM was diluted with H2O, extracted with EtOAc (2×50 mL), organic layer was washed with H2O (25 mL), brine (25 mL), dried over anhydr. Na2SO4, filtered and the solvent was evaporated under reduced pressure to get crude product which was further purified by CC to afford 2-(4-chloro-2-(methylsulfonyl)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran as mixture of diastereoisomers (0.6 g). The diastereomers were separated by reverse phase HPLC to give cis isomer (0.425 g). The relative configuration (cis) was determined by 1H NMR and NOE experiments.
cis-isomer (SC-114, SC-115): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.46 (s, 3H) 1.47-1.50 (1H), 1.81-1.85 (1H), 1.92-1.94 (1H), 2.15-2.20 (1H), 3.34 (s, 1H), 3.82-3.86 (1H), 4.06-4.09 (1H), 5.20-5.22 (1H), 7.76-7.78 (1H), 7.83-7.85 (1H), 7.88-7.89 (1H), 7.92-7.94 (1H), 8.04 (s, 1H), 8.15-8.16 (1H), 8.20-8.22 (1H).
Two enantiomers of this single diastereomer were separated by normal phase chiral prep HPLC using a YMC-Amylose C column and hexane/ethanol/DEA (80/20/0.1) as mobile phase to obtain two cis enantiomers SC-114 and SC-115.
SC-114: (0.115 g, off white solid, 1st eluted enantiomer; cis-EN1)
SC-115: (0.110 g, off white solid, 2nd eluted enantiomer; cis-EN2)
2-(4-Chlorophenyl)-2-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 8)




2-(4-Chlorophenyl)-4-iodo-2-methyltetrahydro-2H-pyran
To a stirred solution of 4-chloroacetophenone (10 g, 64.9 mmol) and homoallyl alcohol (4.7 g, 64.9 mmol) in MeCN (40 mL) was added NaI (9.7 g, 64.9 mmol) and the mixture was stirred at RT for 10 min. Then chlorotrimethylsilane (8.2 mL, 64.9 mmol) was added drop wise at RT and the RM was heated up to 70° C. for 16 h. The RM was cooled to RT and quenched with sodium thiosulfate solution. MeCN was evaporated and the concentrated mass was diluted with water (100 mL) and extracted with EtOAc (2×150 mL). Combined organic layer was dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 2-(4-chlorophenyl)-4-iodo-2-methyltetrahydro-2H-pyran (0.9 g, 4%) as pale yellow colored solid.
2-(4-Chlorophenyl)-2-methyl-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
To a suspension of sodium hydride (0.11 g, 4.4 mmol) in DMF (12 mL) was added 2-(4-chlorophenyl)-4-iodo-2-methyltetrahydro-2H-pyran (0.5 g, 1.5 mmol, 1.0 eq) and 3-trifluoromethylthiophenol (0.79 g, 4.4 mmol, 3.0 eq) at RT. The RM was stirred at 70° C. for 5 h. Then the RM was cooled to RT and quenched with ice. The RM was extracted with EtOAc (2×50 mL). Combined organic layer was dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to give crude mass which was then purified by CC to afford 2-(4-chlorophenyl)-2-methyl-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (0.04 g, 35%) as a pale yellow color oil.
2-(4-Chlorophenyl)-2-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
To a stirred solution of 2-(4-chlorophenyl)-2-methyl-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (0.6 g, 15 mmol, 1.0 eq) in a mixture of solvent of MeCN (9 mL) and H2O (3 mL), sodium periodate (1.0 g, 46.0 mmol, 3.0 eq) and RuCl3 (0.006 g, 0.03 mmol, 0.02 eq) were added and the mixture was stirred for 30 min. After completion, the RM was filtered over celite bed and washed with H2O. The filtrate was extracted with EtOAc and combined organic layer was dried over anhydr. Na2SO4, filtered and the solvent was evaporated under reduced pressure to get crude product which was then purified by CC to afford pure 2-(4-chlorophenyl)-2-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (0.18 g, 28%, light brown solid) as a single diastereomer. The relative configuration (trans) was determined by 1H NMR, HMBC, HMQC and NOESY experiments.
SC-117: 1H NMR (600 MHz, DMSO-d6, δ ppm): 1.32 (s, 3H), 1.57-1.62 (2H), 1.67-1.71 (1H), 2.70-2.72 (1H), 3.19-3.23 (1H), 3.39-3.43 (1H), 3.74-3.77 (1H), 7.20-7.22 (2H), 7.41-7.43 (2H), 7.94-7.96 (1H), 8.16 (s, 1H), 8.20-8.22 (2H).
Two enantiomers of this single diastereomer were separated by chiral prep HPLC using an OJ-H column and hexane/ethanol/DEA (90/10/0.1) as mobile phase to obtain two trans enantiomers SC-140 and SC-141.
SC-140: (0.212 g, off white solid, 1st eluted enantiomer; trans-EN1).
SC-141 (0.083 g, off white solid, 2nd eluted enantiomer; trans-EN2).
2-(4-Chlorophenyl)-4-[[2-isopropyl-5-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran (Example 9)




To a stirred solution of trans-2-(4-chlorophenyl)-4-((2-methyl-5-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.5 g, 3.6 mmol, 1.0 eq) in THF (15 mL), KOt-Bu (0.81 g, 7.2 mmol, 2.0 eq) was added portion wise at −78° C. and the mixture was stirred for 5 min. CH3I (1.0 g, 7.2 mmol, 2.0 eq) was added dropwise at the same temperature and stirred at −78° C. for 1 h. Then it was stirred at RT for further 1.5 h. After completion of the reaction it was quenched with crushed ice and diluted with EtOAc. The inorganics were filtered through celite bed. Organic layers were separated, washed with chilled H2O (5×20 mL), brine and finally dried over anhydr. Na2SO4 and filtrated. Purification was done by reverse phase preperative HPLC to obtain 2-(4-chlorophenyl)-4-((2-isopropyl-5-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran as a single diastereomer (cis). The relative configuration (cis) was determined by 1H NMR, COSY and NOE experiments.
cis-isomer (SC-118, SC-119): 1H NMR (400 MHz, CDCl3, δ ppm): 1.27-1.30 (6H), 1.50-1.60 (1H), 1.69-1.74 (2H), 2.00-2.04 (1H), 3.52-3.59 (1H), 3.76-3.80 (1H), 3.85-3.91 (1H), 4.11-4.14 (1H), 4.45-4.47 (1H), 7.33-7.40 (4H), 7.97-8.00 (1H), 8.04 (s, 1H), 8.09-8.12 (1H).
On irradiating SCH proton “positive” NOE was observed with OCH proton.
Two enantiomers of this single diastereomer were separated by chiral HPLC, using chiral pack AD-H column and ethanol/DEA: (100/0.1) as mobile phase to obtain two cis enantiomers (SC-118 and SC-119).
SC-118: (0.176 g, 11.0%, yellow gummy liquid, 1st eluted enantiomer; cis-EN1).
SC-119: (0.169 g, 10.6%, yellow gummy liquid, 2nd eluted enantiomer; cis-EN2).
3-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 10)




3-Iodo-4,4-dimethoxytetrahydro-2H-pyran
To a mixture of tetrahydro-4H-pyran-4-one (10 g, 0.1 mol, 1.0 eq) and trimethylorthoformate (48.4 g, 0.46 mol, 4.6 eq) at 0° C. was added I2 (25.3 g, 0.1 mol, 1.0 eq) slowly over 10 min. The RM was allowed to stir at 0° C. for 30 min and was then allowed to come to RT and stirred for further 1 h. The RM was then cooled to 0° C. and quenched by the slow addition of sat. aq. sodium thiosulfate solution (20 mL). The resulting mixture was extracted with EtOAc (2×300 mL). The combined organic layers were washed with brine (100 mL), dried over anhydr. Na2SO4, filtered and concentrated in vacuum to get crude compound. The crude residue was purified by flash CC using silica gel to get pure, 3-iodo-4,4-dimethoxytetrahydro-2H-pyran (20 g, 74%) as a light yellow liquid.
3-(4-Chlorophenyl)dihydro-2H-pyran-4(3H)-one
To a stirred mixture of (4-chlorophenyl)boronic acid (11.2 g, 71.0 mmol, 1.5 eq), trans-2-aminocyclohexanol (0.70 g, 4.7 mmol, 0.1 eq) and nickel(II)chloride hexahydrate (0.55 g, 2.3 mmol, 0.05 eq) in THF at 0° C. was added NaHMDS (1M solution in THF) (94 mL, 94 mmol, 2.0 eq) drop wise over 10 min. The RM was splurged with N2 for 15 min. To the RM was added 2-propanol (previously spurged with N2) at 0° C. and the resulting RM was allowed to come to RT at which time 3-iodo-4,4-dimethoxy tetrahydro-2H-pyran (13.0 g, 47 mmol, 1.0 eq) was added drop wise over 5 min. The RM was then heated up to 60° C. and stirred for 16 h. The RM was then cooled to 0° C. and quenched by careful addition of aq. 1N HCl. The resulting RM was extracted with EtOAc (2×400 mL). The combined organic layers were washed with brine (200 mL), dried over anhydr. Na2SO4, filtered and concentrated in vacuum to get crude compound. The crude residue was purified by flash CC to get pure 3-(4-chlorophenyl)dihydro-2H-pyran-4(3H)-one (4 g, 40%) as a light orange oil.
3-(4-Chlorophenyl)tetrahydro-2H-pyran-4-ol
To a stirred solution of 3-(4-chlorophenyl)dihydro-2H-pyran-4(3H)-one (4.5 g, 21.4 mmol, 1.0 eq) in MeOH (50 mL), NaBH4 (1.2 g, 32.1 mmol, 1.5 eq) was added and the mixture was stirred for 1 h. The RM was distilled under reduced pressure, diluted with H2O and extracted with EtOAc (2×100 mL). The combined organic layers were washed with sat. brine, dried over anhydr. Na2SO4, filtered and concentrated in vacuum to get crude product. The crude residue was purified by flash CC using silica gel to get pure 3-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (3.5 g, 77%) as a white solid.
3-(4-Chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
Methanesulfonyl chloride (1.4 mL, 14.1 mmol, 1.5 eq) was added to an ice-cold solution of 3-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (2.0 g, 9.4 mmol, 1.0 eq) and TEA (4.0 mL, 28.2 mmol, 3 eq) in DCM (25 mL). The RM was stirred at the same temperature for 2 h. The RM was quenched with H2O and the crude product was extracted with DCM (2×100 mL). Combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude product which was purified by CC to afford 3-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (2.0 g, 74%) as a brown liquid.
3-(4-Chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
K2CO3 (2.8 g, 20.6 mmol, 2.0 eq) was added to the solution of 3-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (3.0 g 10.3 mmol, 1.0 eq) and 3-(trifluoromethyl)benzenethiol (5.6 mL, 41.3 mmol, 2.0 eq) in DMF (30 mL). The RM was stirred at 60° C. for 16 h. Then the RM was cooled to RT and quenched with ice. The aq. layer was extracted with EtOAc (2×150 mL) and the combined organic layers were dried over anhydr. Na2SO4, filtered and concentrated under reduced pressure to yield crude mass which was then purified by CC to afford 3-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (2.5 g, 65%) as a pale yellow color oil).
3-(4-Chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To an ice cold solution of 3-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (2.0 g, 5.4 mmol, 1.0 eq) in THF:H2O (3:1)(130 mL) oxone (9.9 g, 16.1 mmol, 3.0 eq) was added and RM was stirred at RT for 4 h. After completion of the reaction, the RM was diluted with water and extracted with EtOAc. The combined organic layers were washed with H2O, sat. brine and dried over anhydr. Na2SO4, filtered and evaporated under reduced pressure to get crude product which was further purified by CC to afford 3-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.3 g, 60%) as a white solid.
3-(4-Chlorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To a stirred solution of 3-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.5 g, 1.2 mmol, 1.0 eq) in THF (20 mL), KOt-Bu (0.28 g, 2.5 mmol, 2.0 eq) and 18-crown-6 was added at −78° C. and the RM was stirred at same temperature for 15 min. At the same temperature CH3I (0.35 g, 2.5 mmol, 2.0 eq) was added and the RM was stirred at same temperature for 1 h. Finally, the RM was stirred at RT for 1 h. After completion of the reaction, it was quenched with crushed ice and diluted with EtOAc. The organic layer was separated, and the combined organic layer was washed with chilled H2O (5×50 mL), brine and finally dried over anhydr. Na2SO4. The different isomers were separated by SFC on a chiral pack OJ-H column. The relative configuration of the diastereomers was determined by 1H NMR and NOE experiments.
SC-120: (0.026 g, 5% yield, off white solid; cis)
1H NMR (400 MHz, DMSO-d6, δ ppm): 1.51 (s, 3H), 1.61-1.65 (1H), 2.29-2.32 (1H), 3.08-3.10 (1H), 3.68-3.72 (1H), 3.92-3.98 (2H), 4.06-4.09 (1H), 7.26-7.28 (2H), 7.44-7.47 (2H), 7.65 (s, 1H), 7.78-7.82 (1H), 7.92-7.94 (1H), 8.07-8.09 (1H).
SC-121: (0.067 g, 12.9%, off white solid) 1st eluting enantiomer; trans-EN1.
SC-122: (0.09 g, 17.4%, off white) 2nd eluting enantiomer; trans-EN2.
1H NMR (400 MHz, DMSO-d6, δ ppm): 1.15-1.21 (1H), 1.49 (s, 3H), 2.14-2.21 (1H), 3.52-3.63 (3H), 3.80-3.88 (2H), 7.27-7.34 (4H), 7.83-7.87 (2H), 8.04-8.07 (1H), 8.11-8.13 (1H).
General reaction scheme 1 for the compounds preparation of the compounds of examples 5, 17, 23 to 27 and 39 (SC-204, SC-205, SC-208, SC-209, SC-212, SC-213, SC-218, SC-219, SC-220, SC-221, SC-222, SC-223, SC-224, SC-225, SC-226, SC-227, SC-228, SC-229, SC-230, SC-231, SC-232, SC-233):




4-Methyl-2-(4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 5)




Step 1: 2-(4-Methylsulfonyl-phenyl)-tetrahydro-pyran-4-ol
4-Methylsulfonyl-benzaldehyde (2 g, 10.86 mmol) was dissolved in DCE (40 mL) and cooled in an ice bath. TFA (16 mL) followed by 3-butenol (1.13 mL, 13.03 mmol) were added and the mixture stirred at RT for 67 h. The mixture was diluted with H2O (100 mL), basified with 6 M NaOH (aq) and extracted with DCM (100 mL). The organic layer was separated and washed with brine, dried (Na2SO4) and concentrated under reduced pressure to get crude. The crude product was dissolved in MeOH (20 mL) and LiOH (1.19 g, 28.40 mmol) was added. The reaction was stirred at RT for 5 h. MeOH was concentrated under reduced pressure and the residue was diluted with DCM (100 mL) and washed with water (50 mL), brine (50 mL), dried (Na2SO4) and concentrated in vacuo to get crude. The crude compound was triturated with n-hexane (10 mL) and Et2O (10 mL) to give 2-(4-Methylsulfonyl-phenyl)-tetrahydro-pyran-4-ol (1.8 g; 64%) as pale yellow solid.
Step 2: Methanesulfonic acid [2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran-4-yl]ester
Methanesulfonyl chloride (0.72 mL, 9.34 mmol) was added to a solution of 2-(4-Methylsulfonyl-phenyl)-tetrahydro-pyran-4-ol (1.6 g, 6.25 mmol) and DIPEA (2.72 mL, 15.55 mmol) in DCM (15 mL) at 0° C.; allowed to warm to RT and stirred for 16 h. The mixture was diluted with DCM (100 mL) and washed sequentially with 1 N HCl (50 mL), sat. NaHCO3 solution (50 mL), water (50 mL), brine (50 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude Methanesulfonic acid [2-(4-methyl-sulfonyl-phenyl)-tetrahydro-pyran-4-yl]ester (2 g) as a solid.
Step 3: 2-(4-Methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfanyl]-tetrahydro-pyran
3-Trifluoromethyl thiophenol (2.2 mL, 16.12 mmol) was added to a suspension of Methanesulfonic acid [2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran-4-yl]ester (1.8 g, 5.38 mmol) and K2CO3 (1.48 g, 10.70 mmol) in DMF (20 mL) and the RM was heated at 50° C. for 4 h and then stirred at RT for 16 h. After completion of reaction, the mixture was diluted with H2O (100 mL) and extracted with EtOAc (250 mL). The organic extract was washed with water (100 mL), brine (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-12% EtOAc in PE) to obtain 2-(4-Methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfanyl]-tetrahydro-pyran (1.8 g, 73%) as a light brown solid.
Step 4: 2-(4-Methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
2-(4-Methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfanyl]-tetrahydro-pyran (1.8 g, 4.32 mmol) was dissolved in MeOH (65 mL) and a solution of OXONE (5.3 g, 8.65 mmol) in H2O (43 mL) was added. After stirring at RT for 1 h, additional OXONE (2.66 g, 4.33 mmol) in H2O (12 mL) was added to it and stirring then continued at RT for 16 h. MeOH was concentrated in vacuo; the residue was diluted with H2O (80 mL) and extracted with EtOAc (2×100 mL). The combined organic extract was washed with brine (100 mL), dried (Na2SO4) and concentrated to get crude. The crude compound was purified by CC (silica gel, 0-60% EtOAc in PE) to obtain 2-(4-Methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydropyran (1.8 g, 90%) as a solid.
Step 5: 4-Methyl-2-(4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
A solution of 2-(4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (500 mg, 1.11 mmol) in THF (10 mL) was cooled to −78° C. and KOt-Bu (1 M solution in THF; 1.67 mL, 1.60 mmol) was added drop-wise. CH3I (0.13 mL, 2.18 mmol) was added and the resulting mixture was warmed to RT and stirred for 16 h. The reaction mass was diluted with EtOAc (100 mL) and washed with H2O (30 mL) and brine (30 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-15% EtOAc in PE) followed by prep. HPLC to obtain cis-rac 4-methyl-2-(4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (100 mg, 20%) as a white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.15-8.17 (1H), 8.04 (1H), 7.88-7.97 (3H), 7.60-7.61 (2H), 4.68-4.70 (2H), 4.07-4.11 (1H), 3.71-3.78 (1H), 3.21 (3H), 2.11-2.17 (1H), 1.83-1.87 (1H), 1.77-1.80 (1H), 1.46-1.54 (4H) ppm.
NOE: C-2 proton & methyl=cis
2-(4-Fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 17)




Step 1: 2-(3-Bromo-4-fluoro-phenyl)-tetrahydro-pyran-4-ol
To a solution of 3-bromo-4-fluorobenzaldehdye (10 g, 49.50 mmol) in DCE (200 mL) was added 3-buten-1-ol (5.34 g, 74.25 mmol) and TFA (80 mL) and the RM was stirred for 2 d at RT. The RM was quenched with ice-water (200 mL) and basified using 6N NaOH solution to pH=8, the aq layer was extracted with DCM (2×200 mL). The combined organic layer was washed with H2O (100 mL), brine (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude (10 g). The crude compound (10 g, 37.17 mmol) was dissolved in MeOH (100 mL), LiOH was added (7.8 g, 42 mmol) and stirred for 5 h at RT. The RM was concentrated under reduced pressure and the residue was diluted with DCM (300 mL). The organic layer was washed with H2O (100 mL), brine (100 mL), dried (Na2SO4) and concentrated in vacuo to get crude. The crude was purified by CC (silica gel, 0-30% EtOAc in PE) to obtain 2-(3-Bromo-4-fluoro-phenyl)-tetrahydro-pyran-4-ol (8 g, 58%).
Step 2: Methanesulfonic acid [2-(3-bromo-4-fluoro-phenyl)-tetrahydro-pyran-4-yl]ester
Methanesulfonylchloride (4.62 mL, 60 mmol) was added to a solution of 2-(3-bromo-4-fluoro-phenyl)-tetrahydro-pyran-4-ol (11 g, 40 mmol) and DIPEA (17.4 mL, 100 mmol) in DCM (100 mL) at 0° C. and stirred for 16 h at RT. After completion of reaction, the mixture was poured in ice water (200 mL) and extracted with DCM (2×300 mL). The combined organic layer was washed with sat. NaHCO3 solution (100 mL), water (100 mL), brine (100 mL), dried (Na2SO4) and the solvent was distilled off under reduced pressure to obtain methanesulfonic acid [2-(3-bromo-4-fluoro-phenyl)-tetrahydro-pyran-4-yl]ester (14 g, crude).
Step 3: 2-(3-Bromo-4-fluoro-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfanyl]-tetrahydro-pyran
To a solution of methanesulfonic acid [2-(3-bromo-4-fluoro-phenyl)-tetrahydro-pyran-4-yl]ester (14 g, 39.66 mmol) in DMF (140 mL) was added K2CO3 (16.41 g, 118.98 mmol) and 3-trifluoromethylthiophenol (10.87 g, 79.32 mmol) and the RM was heated to 50° C. for 5 h, then stirred at RT for 16 h. After completion of reaction, the mixture was diluted with H2O (400 mL) and extracted with EtOAc (2×500 mL). The organic layer was washed with brine (200 mL), dried (Na2SO4) and concentrated in vacuo to get crude. The crude compound was purified by CC (silica-gel; 0-5% EtOAc in PE) to obtain 2-(3-bromo-4-fluoro-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfanyl]-tetrahydro-pyran (15 g, 90%).
Step 4: 2-(3-Bromo-4-fluoro-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
OXONE (63.51 g, 103.44 mmol) in H2O (375 mL, 25 vol) was added to a solution of 2-(3-Bromo-4-fluoro-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfanyl]-tetrahydro-pyran (15 g, 34.48 mmol) in MeOH (450 mL, 30 vol) at RT and stirred for 16 h. After completion of reaction, distilled off MeOH under reduced pressure, the residue was diluted with H2O (300 mL) and extracted with DCM (2×400 mL). The organic layer was washed with brine (100 mL), dried (Na2SO4) and concentrated to get semi pure compound. The semi pure compound was purified by CC (silica-gel; 0-30% EtOAc in PE) to obtain 2-(3-bromo-4-fluoro-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (15 g, 93%).
Step 5: 2-(3-Bromo-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
A solution of 2-(3-Bromo-4-fluoro-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (10 g, 21.41 mmol) in THF (100 mL, 10 vol) was cooled to −78° C. and KOt-Bu (1M solution in THF) (43 mL, 42.82 mmol) was added drop-wise. After stirring for 30 min CH3I was added (3.31 mL, 53.53 mmol) and the resulting mixture was allowed to warm to RT and further stirred for 16 h. The RM was quenched with H2O (200 mL) and extracted with EtOAc (2×100 mL). The combined organic extract was washed with brine (50 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel; 0-30% EtOAc in PE) to obtain 2-(3-bromo-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (8 g, 80%).
Step 6: 2-(4-Fluoro-3-methylsulfanyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
A solution of 2-(3-bromo-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (4 g, 8.31 mmol) and DIPEA (2.97 mL, 16.63 mmol) in toluene (40 mL) was degassed for 10 min, added Xantphos (0.33 g, 0.58 mmol) followed by Pd2(dba)3 (0.53 g, 0.58 mmol) and degassed again for 10 min. Sodium thiomethoxide (0.87 g, 12.42 mmol) was then added and further degassed for 5 min. The RM was heated at 110° C. for 16 h under Ar. The RM was filtered through celite and the filtrate concentrated to yield the crude product. The crude product was purified by CC (silica gel; 0-25% EtOAc in pet-ether) to obtain 2-(4-fluoro-3-methylsulfanyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (3.2 g, 86%).
Step 7: 2-(4-Fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
OXONE (10.27 g, 16.74 mmol) in H2O (62 mL, 25 vol) was added to a solution of 2-(4-Fluoro-3-methylsulfanyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (2.5 g, 5.58 mmol) in MeOH (75 mL, 30 vol) at RT and stirred for 16 h. After completion of reaction, distilled off MeOH under reduced pressure and the residue was diluted with H2O (80 mL) and extracted with DCM (2×100 mL). The organic layer was washed with brine (100 mL), dried (Na2SO4) and concentrated to get the crude compound. The crude compound was purified by CC (silica-gel; 0-40% EtOAc in PE) to obtain 2-(4-fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (1.5 g, 56%).
1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.16-8.17 (1H), 8.05 (1H), 7.93-7.96 (1H), 7.84-7.85 (1H), 7.74-7.77 (1H), 7.49-7.52 (1H), 4.69-4.70 (1H), 4.07-4.11 (1H), 3.69-3.74 (1H), 3.33 (3H), 2.13-2.19 (1H), 1.85-1.88 (1H), 1.79-1.81 (1H), 1.50 (3H), 1.46-1.48 (1H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(4-Fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
Cis-rac 2-(4-Fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-IC column, co-solvent EtOH) to give cis-EN1 SC-212 and cis-EN2 SC-213.
Cis-EN1 SC-212—analytical HPLC: Chiralpak IA (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/EtOH 50/50, Ret. Time 5.49; ee>95%
Cis-EN2 SC-213—analytical HPLC: Chiralpak IA (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/EtOH 50/50, Ret. Time 6.48; ee>95%
2-(4-Chloro-2-methyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 23)




Step 1: 2-(4-chloro-2-methylphenyl)tetrahydro-2H-pyran-4-ol
4-chloro-2-methyl-benzaldehyde (10 g, 64.93 mmol) was dissolved in DCE (200 mL), cooled in an ice bath and TFA (80 mL) followed by 3-butenol (6.76 mL, 77.79 mmol) was added and stirred at RT for 62 h. The mixture was concentrated in vacuo and the residue diluted with water (500 mL), basified with 6M NaOH (aq) and extracted with DCM (800 mL). The organic layer was separated and washed with brine, dried (Na2SO4) and concentrated under reduced pressure to get the crude product. The crude product was dissolved in MeOH (125 mL) and LiOH (13.63 g, 324.52 mmol) was added. The reaction was stirred at RT for 5 h. MeOH was concentrated under reduced pressure and the residue was diluted with DCM (200 mL) and washed with water (100 mL), brine (100 mL), dried (Na2SO4) and concentrated in vacuo to get crude. Purification by CC (silica gel, 0-15% EtOAc in PE) gave 2-(4-chloro-2-methylphenyl)tetrahydro-2H-pyran-4-ol (7.8 g; 54%) as a thick liquid.
Step 2: 2-(4-chloro-2-methylphenyl)tetrahydro-2H-pyran-4-ylmethanesulfonate
Methanesulfonyl chloride (3.59 mL, 46.43 mmol) was added to a solution of 2-(4-chloro-2-methylphenyl)tetrahydro-2H-pyran-4-ol (7 g, 30.97 mmol) and DIPEA (13.39 mL, 77.36 mmol) in DCM (70 mL) at 0° C. The RM was allowed to warm to RT and stirred for 16 h. The mixture was diluted with DCM (500 mL) and washed sequentially with 1N HCl (100 mL), sat. NaHCO3 solution (100 mL), H2O (100 mL), brine (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude 2-(4-chloro-2-methyl-phenyl)tetrahydro-2H-pyran-4-ylmethanesulfonate (9.7 g) as a thick liquid.
Step 3: 2-(4-chloro-2-methyl phenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran
3-Trifluoromethyl thiophenol (13 mL, 95.67 mmol) was added to a suspension of 2-(4-chloro-2-methylphenyl)tetrahydro-2H-pyran-4-ylmethanesulfonate (9.7 g, 31.90 mmol) and K2CO3 (8.81 g, 63.74 mmol) in DMF (140 mL) and the RM was heated to 50° C. for 5 h and continued at RT for 16 h. After completion of reaction, the RM was diluted with water (250 mL) and extracted with EtOAc (500 mL). The organic extract was washed with H2O (200 mL), brine (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-1.5% EtOAc in PE) to obtain 2-(4-chloro-2-methylphenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (7 g, 56%) as a thick liquid.
Step 4: 2-(4-chloro-2-methyl phenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
2-(4-chloro-2-methylphenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (7 g, 18.13 mmol) was dissolved in MeOH (200 mL) and a solution of OXONE (22.26 g, 36.26 mmol) in Water (120 mL) was added and stirred at RT for 1 h and additional OXONE (9.9 g, 16.12 mmol) in Water (60 mL) was added to it and stirred continued at RT for 16 h. MeOH was concentrated in vacuo; the residue was diluted with water (100 mL) and extracted with EtOAc (500 mL). The organic extract was washed with brine (150 mL), dried (Na2SO4) and concentrated to get crude. The crude compound was purified by CC (silica gel, 0-18% EtOAc in PE) to obtain 2-(4-chloro-2-methylphenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (5 g, 66%) as a solid.
Step 5: 2-(4-Chloro-2-methyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
A solution of 2-(4-chloro-2-methylphenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (2 g, 4.78 mmol) in THF (40 mL) was cooled to −78° C. and KOt-Bu (1M solution in THF; 9.56 mL) was added drop-wise, then added CH3I (0.74 mL, 11.90 mmol) and the resulting mixture was warmed to RT and stirred for 48 h. The RM was diluted with EtOAc (200 mL) and washed with H2O (50 mL), brine (50 mL), dried over (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-15% EtOAc in PE) to obtain 2-(4-Chloro-2-methyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (1 g, 48%) as a white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.16-8.18 (1H), 8.05 (1H), 7.93-7.96 (1H), 7.34-7.35 (1H), 7.24-7.25 (2H), 4.69-4.71 (1H), 4.03-4.06 (1H), 3.72-3.75 (1H), 2.24 (3H), 2.12-2.17 (1H), 1.84-1.88 (1H), 1.64-1.67 (1H), 1.52 (3H), 1.46-1.48 (1H) ppm.
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(4-Chloro-2-methyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
Cis-rac 2-(4-Chloro-2-methyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (900 mg) was subjected to preparative chiral-LC (Chiralpak-IE column, Hexane:EtOH, 70:30)) to give 385 mg of cis-EN1 SC-224 and 390 mg of cis-EN2 SC-225.
cis-EN1 SC-224—analytical HPLC: Chiralpak IE (250×4.6 mm 5μ), 1 ml/min, RT, hexane/EtOH 60/40, Ret. Time 4.880; ee>95%
cis-EN2 SC-225—analytical HPLC: Chiralpak IE (250×4.6 mm 5μ), 1 ml/min, RT, hexane/EtOH 60/40, Ret. Time 5.820; ee>95%
2-(4-Chloro-3-methoxy-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 24)




Step 1: 2-(4-chloromethoxyphenyl)tetrahydro-2H-pyran-4-ol
TFA (48 mL) was added to a stirred solution of 4-chloro-3-methoxy benzaldehyde (6 g, 35.16 mmol) in DCE (120 mL) at 0° C. and 3-buten-1-ol (2.53 g, 35.16 mmol) was added dropwise to the RM at the same temperature and stirred it for 3 d at RT. The RM was diluted with H2O (100 mL) and the aq. layer was basify with 6 N NaOH (pH-10), the aq layer was extracted with DCM (2×100 mL). The combined organic layer was successively washed with H2O (100 mL), brine (100 mL), then dried (Na2SO4), filtered and evaporated to give crude. LiOH (7.38 g, 35.16 mmol) was added to a stirred solution of the crude compound in MeOH (120 mL) at RT. The RM was stirred for 16 h at RT. The RM was evaporated to give the residue, the residue was diluted with H2O (150 mL) and extracted with EtOAc (3×1 00 mL), the combined organic layer was washed with brine (100 ml).), then dried (Na2SO4), filtered and evaporated the solvent under vacuo to give crude. Which was purified by CC (silica gel, 25-30% EtOAc in PE) to give 2-(4-chloromethoxyphenyl)tetrahydro-2H-pyran-4-ol (6 g, 70%) as a liquid.
Step 2: 2-(4-chloro-3-metoxyphenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
DIPEA (10.82 ml, 61.97 mmol) was added to a stirred solution of 2-(4-chloromethoxyphenyl)tetrahydro-2H-pyran-4-ol (6 g, 24.79 mmol) in DCM (60 mL) at 0° C., then methane sulfonylchloride (2.89 mL, 37.19 mmol) was added at the same temperature, and stirred for 16 h at RT, the RM was poured in ice H2O (150 mL), and separate the organic layer. The aq layer was extracted with DCM (2×100 mL). The organic layer was successively washed with sat NaHCO3 solution (50 mL), water (50 mL) and brine (50 mL), The organic layer was dried (Na2SO4), filtered and evaporated under vaccuo to give 2-(4-chloro-3-methoxyphenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (12 g) as a black color thick compound. This crude was used for next step without further purification.
Step 3: 2-(4-chloro-3-methoxyphenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran
K2CO3 (7.76 g, 56.24 mmol) was added to a stirred solution of 2-(4-chloro-3-metoxyphenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (8 g, 25.12 mmol) in DMF (90 mL), then 3-trifloromethylthiophenol (10 mL, 75.37 mmol) was added and the RM was heated to 50° C. for 6 h, the RM was allowed to cool to RT, then the RM was diluted with water and extracted with EtOAc (3×100 mL). The organic layer was washed with brine (100 mL), then dried (Na2SO4), filtered and evaporated the solvent under vacuo to give crude, which was purified by CC (silicagel, 10% EtOAc in PE) to give 2-(4-chloro-3-methoxyphenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (8 g, 78%), as a brown color liquid.
Step 4: 2-(4-chlor-3-methoxyophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
Oxone (21.37 g, 34.82 mmol) in H2O (14 7 mL) was added to a stirred solution of 2-(4-chloro-3-methoxyphenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (7.0 g, 17.12 mmol) in MeOH (210 mL) at RT. After stirring for 30 min, again Oxone (10.68 g, 17.41 mmol) in H2O (28 mL) were added and then the RM was stirred for 16 h at RT. The RM was concentrated to give the residue, the residue was diluted with EtOAc (100 mL) and washed with water (200 mL), the aq. layer was extracted with EtOAc (3×100 mL). The combined organic layer was washed with brine (100 mL), then dried (Na2SO4), filtered and evaporated the solvent under vaccuo to give crude, which as purified by CC (silica-gel, 20-23% EtOAc in PE) to give 2-(4-chlor-3-methoxyophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (7 g, 81%) as a white solid.
Step 5: 2-(4-Chloro-3-methoxy-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
KOt-Bu (9.21 mL, 9.21 mmol, 1 M in THF) was added to a stirred solution of 2-(4-chlor-3-methoxyphenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (2.0 g, 4.60 mmol) in THF (40 mL) at −78° C., then stirred for 5 min. CH3I (0.71 mL, 11.50 mmol) was added and stirred for 1 h at −78° C., the RM was slowly warmed to RT and stirred for 18 h, the RM was poured into ice-water (50 mL) and extracted with EtOAc (3×100 mL). The combined organic layer was washed with brine, then dried (Na2SO4), filtered and evaporated the solvent under vacuo to give crude, which was purified by CC (silica gel, 20-25% EtOAc in PE) to give 2-(4-chloro-3-methoxy-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (1.0 g, 48.5%) as a white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.15-8.17 (1H), 8.04 (1H), 7.93-7.96 (1H), 7.36-7.37 (1H), 7.07 (1H), 6.90-6.91 (1H), 4.54-4.56 (1H), 4.04-4.08 (1H), 3.84 (3H), 3.67-3.72 (1H), 2.10-2.16 (1H), 1.86-1.89 (1H), 1.73-1.75 (1H), 1.50 (3H), 1.46-1.48 (1H) ppm.
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(4-Chloro-3-methoxy-phenyl)-4-methyl-4-[[3-trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
Cis-rac 2-(4-Chloro-3-methoxy-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (1 g) was subjected to preparative chiral-LC (Chiralpak-IA column, Hexane:Ethanol: (90:10)) to give 176 mg of cis-EN1 SC-226 and 167 mg of cis-EN2 SC-227.
cis-EN1 SC-226—analytical HPLC: Chiralpak IA (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/iPrOH 80/20, Ret. Time 6.527; ee>95%/specific rotation [α]D25.1 −11.0° (c 0.67; DCM).
cis-EN2 SC-227—analytical HPLC: Chiralpak IA (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/iPrOH 80/20, Ret. Time 10.277; ee>95%/specific rotation [α]D25.1 +10.9° (c 0.81; DCM).
2-(3-Chloro-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 25)




Step 1: 2-(3-chloro-4-fluorophenyl)tetrahydro-2H-pyran-4-ol
3-buten-1-ol (3.95 mL, 45.48 mmol) was added to a solution of 3-chloro-4-fluoro benzaldehyde (6 g, 38.21 mmol) in DCE (120 mL), followed by TFA (48 mL) and the RM was stirred for 72 h at RT. After completion of reaction, the solvent was removed under reduced pressure. The residue was diluted with H2O (100 mL) and basified using 6 N NaOH solution, the aq layer was extracted with DCM (500 mL). The organic layer was washed with H2O (100 mL), brine (100 mL) and concentrated under reduced pressure to get the crude compound. The crude compound was dissolved in MeOH (70 mL), added LiOH (4.5 g, 107 mmol) and stirred for 5 h at RT. The RM was concentrated under reduced pressure and the residue was diluted with DCM (300 mL); and was subsequently washed with H2O (100 mL) and brine (100 mL), dried (Na2SO4) and concentrated in vacuo to get crude. Purification by CC (silica gel, 0-18% EtOAc in PE) gave 2-(3-chloro-4-fluorophenyl)tetrahydro-2H-pyran-4-ol (5.5 g; 64%) as thick liquid.
Step 2: 2-(3-chloro-4-fluorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
Methanesulfonylchloride (3 mL, 39 mmol) was added to a solution of 2-(3-chloro-4-fluorophenyl)-tetrahydro-2H-pyran-4-ol (6 g, 26 mmol) and DIPEA (11.3 mL, 65 mmol) in DCM (60 mL) at 0° C. and stirred for 16 h at RT. After completion of reaction, the RM was poured in ice water (100 mL) and extracted with DCM (2×200 mL). The combined organic layer was washed with sat NaHCO3 solution (100 mL), H2O (100 mL) and brine (100 mL) solution, dried (Na2SO4). Distilled off solvent under reduced pressure to get 2-(3-chloro-4-fluorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (7.1 g) as a thick liquid. The crude compound was used in the next step without any further purification.
Step 3: 2-(3-chloro-4-fluorophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran
K2CO3 (10.97 g, 79.49 mmol) and 3-trifluoromethylthiophenol (12.14 mL, 68.18 mmol) were added to a solution of 2-(3-chloro-4-fluorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (7 g, 22.72 mmol) in DMF (70 mL) was and the RM was heated to 50° C. for 4 h, then stirred at RT for 16 h. After completion of reaction, the mixture was diluted with H2O (100 mL) and extracted with EtOAc (2×200 mL). The organic layer was washed with brine (100 mL), dried (Na2SO4) and concentrated in vacuo to get crude. The crude compound was purified by CC (silica-gel, eluent as 0-2% EtOAc in PE to yield 2-(3-chloro-4-fluorophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (4.8 g, 54%), as a liquid.
Step 4: 2-(3-chloro-4-fluorophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
OXONE (14.8 g, 24.10 mmol) in H2O (35 mL) was added to a solution of 2-(3-chloro-4-fluorophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (4.7 g, 12.05 mmol) in MeOH (40 mL) at RT and stirred for 30 min, again added OXONE (7.4 g, 12.05 mmol) in H2O (25 mL) and stirred for 16 h at RT. After completion of reaction distilled off MeOH under reduced pressure and the residue was diluted with H2O (100 mL) and extracted with EtOAc (2×200 mL). The organic layer was washed with brine (100 mL), dried (Na2SO4) and concentrated to get crude compound which was purified by silica-gel CC; using 30% EtOAc in PE to get 2-(3-chloro-4-fluorophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (3 g, 59%) as a white solid.
Step 5: 2-(3-Chloro-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
A solution of 2-(3-chloro-4-fluorophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (1.5 g, 3.55 mmol) in THF (30 mL) was cooled to −78° C. and KOt-Bu (1 M solution in THF; 7 mL, 7.0 mmol) was added drop-wise, then added CH3I (0.55 mL, 8.87 mmol) and the resulting mixture was warmed to RT and stirred for 16 h. The RM was diluted with EtOAc (200 mL) and washed with H2O (50 mL), brine (50 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-25% EtOAc in PE) to obtain 2-(3-chloro-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (0.9 g, 58%) as a white solid.
1H-NMR (600 MHz, [d6]-dmso): δ =8.20-8.22 (1H), 8.16-8.17 (1H), 8.05 (1H), 7.93-7.96 (1H), 7.53-7.54 (1H), 7.34-7.40 (2H), 4.56-4.58 (1H), 4.04-4.07 (1H), 3.68-3.71 (1H), 2.10-2.16 (1H), 1.83-1.87 (1H), 1.74-1.76 (1H), 1.46-1.49 (4H) ppm.
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(3-Chloro-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
Cis-rac 2-(3-Chloro-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (900 mg) was subjected to preparative chiral-LC (Chiralpak-IC column, Hexane:iPrOH: (90:10)) to give 121 mg of cis-EN1 SC-228 and 70 mg of cis-EN2 SC-229.
cis-EN1 SC-228—analytical HPLC: Chiralpak IC (250×4.6 mm 5μ), 1 ml/min, RT, hexane/iPrOH 90/10, Ret. Time 9.91; ee>95%
cis-EN2 SC-229—analytical HPLC: Chiralpak IC (250×4.6 mm 5μ), 1 ml/min, RT, hexane/iPrOH 90/10, Ret. Time 11.28; ee>95%
2-(4-Chlorophenyl)-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 26)




2-(4-Chlorophenyl)-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
A solution of cis-2-(4-chlorophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (2.0 g, 4.95 mmol) in THF (40 mL) was cooled to −78° C. and KOt-Bu (1M solution in THF; 10 mL, 10 mmol) was added drop-wise, then added C2H5I (1 mL, 12.37 mmol) and the resulting mixture was allowed to RT and stirred for 16 h. The RM was diluted with EtOAc (200 mL) and washed with H2O (50 mL), brine (50 mL), dried over (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-25% EtOAc in PE) to obtain 2-(4-chlorophenyl)-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (0.8 g, 37%) as a white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.14-8.16 (1H), 8.02 (1H), 7.93-7.96 (1H), 7.39-7.40 (2H), 7.32-7.33 (2H), 4.54-4.56 (1H), 4.01-4.03 (1H), 3.66-3.69 (1H), 1.99-2.05 (3H), 1.85-1.87 (1H), 1.75-1.79 (1H), 1.65-1.67 (1H), 1.01-1.04 (3H) ppm.
NOE: ethyl & C2-Proton=cis
Chiral resolution of 2-(4-Chlorophenyl)-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
Cis-rac 2-(4-Chlorophenyl)-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (800 mg) was subjected to preparative chiral-LC (Chiralpak-IE column, Hexane:iPrOH: (90:10)) to give 129 mg of cis-EN1 SC-230 and 125 mg of cis-EN2 SC-231.
cis-EN1 SC-230—analytical HPLC: Chiralpak IE (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% iPrNH2 in hexane/iPrOH 90/10, Ret. Time 11.556; ee>95%
cis-EN2 SC-231—analytical HPLC: Chiralpak IE (250×4.6 mm 5μ), 1 ml/min, RT, hexane/iPrOH 90/10, Ret. Time 12.46; ee>95%
4-Methyl-2-[2-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 27)




Step 1: 2-(2-bromo-4-(trifluoromethyl)phenyl)tetrahydro-2H-pyran-4-ol
2-bromo-4-(trifluoromethyl)benzaldehyde (2 g, 7.90 mmol) was dissolved in DCE (40 mL) and cooled in an ice bath. TFA (16 mL) followed by 3-butenol (0.82 mL, 9.48 mmol) were added and the mixture stirred at RT for 48 h. The mixture was diluted with H2O (100 mL), basified with 6 M NaOH (aq) and extracted with DCM (100 mL). Organic layer was separated and washed with brine, dried (Na2SO4) and concentrated under reduced pressure to get crude. The crude product was dissolved in MeOH (35 mL) and LiOH (1.6 g, 42.16 mmol) was added. The reaction was stirred at RT for 16 h. MeOH was concentrated under reduced pressure and the residue was diluted with DCM (100 mL) and washed with H2O (50 mL), brine (50 mL), dried (Na2SO4) and concentrated in vacuo to get crude. The crude compound was purified by CC (silica gel, 0-20% EtOAc in PE) to obtain 2-(2-bromo-4-(trifluoromethyl)phenyl)tetrahydro-2H-pyran-4-ol (2.0 g, 80%) as pale yellow solid.
Step 2: 2(2-bromo-4-(trifluoromethyl)phenyl)tetrahydro-2H-pyran-4-ylmethanesulfonate
Methanesulfonyl chloride (0.9 mL, 11.53 mmol) was added to a solution of 2-(2-bromo-4-(trifluoromethyl)phenyl)tetrahydro-2H-pyran-4-ol (2.5 g, 7.69 mmol) and DIPEA (3.3 mL, 19.23 mmol) in DCM (25 mL) at 0° C.; allowed to warm to RT and stirred for 16 h. The mixture was diluted with DCM (100 mL) and washed sequentially with 1 N HCl (50 mL), sat. NaHCO3 solution (50 mL), H2O (50 mL), brine (50 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude 2(2-bromo-4-(trifluoromethyl)-phenyl)tetrahydro-2H-pyran-4-ylmethanesulfonate (3 g) as a solid.
Step 3: 2-(2-bromo-4-(trifluoromethyl)phenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran
3-Trifluoromethyl thiophenol (3.0 mL, 22.33 mmol) was added to a suspension of 2(2-bromo-4-(trifluoromethyl)phenyl)tetrahydro-2H-pyran-4-ylmethanesulfonate (3.0 g, 7.44 mmol) and K2CO3 (2.0 g, 14.88 mmol) in DMF (30 mL) and the RM was heated at 60° C. for 6 h and then stirred at RT for 16 h. After completion of reaction, the RM was diluted with H2O (100 mL) and extracted with EtOAc (250 mL). The organic extract was washed with H2O (100 mL), brine (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-10% EtOAc in PE) to obtain 2-(2-bromo-4-(trifluoromethyl)phenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (2.4 g, 66%) as a yellow oily liquid.
Step 4: 2-(2-bromo-4-(trifluoromethyl)lphenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
2-(2-bromo-4-(trifluoromethyl)phenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (2.4 g, 4.94 mmol) was dissolved in MeOH (72 mL) and a solution of OXONE (15.2 g, 24.74 mmol) in H2O (60 mL) was added. The total reaction mass was stirred at RT for 16 h. MeOH was concentrated in vacuo; the residue was diluted with H2O (80 mL) and extracted with EtOAc (2×100 mL). The combined organic extract was washed with brine (100 mL), dried (Na2SO4) and concentrated to get crude. The crude compound was purified by CC (silica gel, 0-20% EtOAc in PE) to obtain 2-(2-bromo-4-(trifluoromethyl)phenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (1.6 g, 66%) as a solid.
Step 5: 2-(2-bromo-4-(trifluoromethylphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
A solution of 2-(2-bromo-4-(trifluoromethyl)lphenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (1.6 g, 3.09 mmol) in THF (10 mL) was cooled to −78° C. and KOt-Bu (1 M solution in THF; 6.18 mL, 6.18 mmol) was added dropwise. CH3I (0.5 mL, 7.73 mmol) was added and the resulting mixture was warmed to RT and stirred for 16 h. The reaction mass was diluted with EtOAc (100 mL) and washed with H2O (30 mL) and brine (30 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was washed with n-pentane to obtain 2-(2-bromo-4-(trifluoromethylphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (1.5 g, 82%) as a white solid.
Step 6: 2-(2-methylthio)-4-(trifluoromethylphenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
Sodium thiomethoxide (0.203 g, 2.90 mmol) was added to a clear solution of 2-(2-bromo-4-(trifluoromethylphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (0.5 g, 0.96 mmol) in DMF (10 mL) at 0° C. The total reaction mass was stirred at RT for 4 h. The reaction mass was dumped into ice water, solid was precipitated; the solid was filtered and washed with chilled H2O. The compound was kept for drying for 3 h to obtain 2-(2-methylthio)-4-(trifluoromethylphenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)-tetrahydro-2H-pyran (0.4 g, 83%) as a white solid.
Step 7: 4-Methyl-2-[2-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
2-(2-methylthio)-4-(trifluoromethyl phenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (0.4 g, 0.80 mmol) was dissolved in MeOH (12 mL) and a solution of OXONE (2.46 g, 4.016 mmol) in H2O (10 mL) was added. The total reaction mass was stirred at RT for 16 h. MeOH was concentrated in vacuo; the residue was diluted with H2O (80 mL) and extracted with EtOAc (2×100 mL). The combined organic extract was washed with brine (100 mL), dried (Na2SO4) and concentrated to get crude. The crude compound was purified by CC (silica gel, 0-30% EtOAc in PE) to obtain cis-rac 4-methyl-2-[2-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (0.22 g, 51%) as a solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.13-8.18 (3H), 8.05 (1H), 7.98-8.01 (1H), 7.91-7.95 (1H), 5.27-5.31 (1H), 4.08-4.13 (1H), 3.86-3.91 (1H), 3.39 (3H), 2.17-2.23 (1H), 1.97-2.01 (1H), 1.83-1.88 (1H), 1.50-1.53 (1H), 1.48 (3H) ppm.
NOE: C-2 proton & methyl=cis
2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 39)




Step 1: 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol
To a solution of 4-chlorobenzaldehyde (10 g, 71.13 mmol) in DCE (200 mL) was added 3-buten-1-ol (8.19 g, 113.82 mmol), TFA (80 mL) and the RM was stirred for 2 d at RT. After completion of the reaction, the solvent is removed under reduced pressure. The residue was diluted with H2O (100 mL) and basified using 6 N NaOH solution, the aq layer was extracted with DCM (2×200 mL). The organic layer was washed with H2O (100 mL), brine (100 mL) and concentrated under reduced pressure to get the crude compound. The crude compound was dissolved in MeOH (100 mL), added LiOH (8.5 g, 356.65 mmol) and stirred for 5 h at RT. MeOH was concentrated under reduced pressure, then diluted with EtOAc (300 mL) and subsequently washed with H2O (100 mL), brine (100 mL), dried (Na2SO4) and concentrated in vacuo to get the crude product, which was purified by CC (silica gel, 0-30% EtOAc in PE) gave 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (10 g; 72%) as pale-yellow solid.
Step 2: 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
Methane sulfonylchloride (5.45 mL, 70.74 mmol) was added to a solution of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (10 g, 47.16 mmol) and DIPEA (15.2 g, 117.9 mmol) in DCM (100 mL) at 0° C. and stirred for 16 h at RT. After completion of reaction, the RM was poured in ice water (150 mL) and extracted with DCM (2×200 mL). The combined organic layer was washed with sat NaHCO3 solution (50 mL), water (50 mL) and brine (50 mL) solution, dried (Na2SO4). Distilled off solvent under reduced pressure to get 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (12 g) as a thick liquid. The crude compound was used in the next step without any further purification.
Step 3: 2-(4-chlorophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran
To a solution of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (12 g, 41.38 mmol) in DMF (100 mL) was added K2CO3 (11.42 g, 82.75 mmol) and 3-trifluoromethylthiophenol (17 mL, 124.14 mmol) and the RM was heated to 50° C. for 4 h, then stirred at RT for 16 h. After completion of reaction, the RM was diluted with H2O (300 mL) and extracted with EtOAc (2×300 mL). The organic layer was washed with brine (100 mL), dried (Na2SO4) and concentrated in vacuo to get crude. The crude compound was purified by CC (silica-gel, 0-5% EtOAc in PE) to yield 2-(4-chlorophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (7.5 g, 48.73%), as a brown color liquid.
Step 4: 2-(4-chlorophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
oxone (19.8 g, 32.24 mmol) in H2O (135 mL) was added to a solution of 2-(4-chlorophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (6 g, 16.12 mmol) in MeOH (210 mL) at RT and stirred for 30 min, again added oxone (9.9 g, 16.12 mmol) in H2O (40 mL) and stirred for 16 h at RT. After completion of reaction distilled off MeOH under reduced pressure and the residue was diluted with H2O (100 mL) and extracted with EtOAc (2×200 mL). The organic layer was washed with brine (100 mL), dried (Na2SO4) and concentrated to get semi pure compound. The semi pure compound was purified by CC (silica-gel, 30% EtOAc in PE) to get cis-2-(4-chlorophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (4 g, 61%) as a white solid (SC-401).
trans-2-(4-chlorophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (SC-402)
2-(4-chlorophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (100 mg, 0.2470 mmol) was dissolved in THF (2 mL, 24.6 mmol) and the solution placed under N2 and cooled to −78° C. KOt-Bu (1.0 mol/L in THF) (1.5 equiv., 0.3706 mmol) was added and the reaction stirred at −78° C. for 45 min, quenched with excess ammonium hydroxide and allowed to warm to RT. The RM was diluted with EtOAc (20 ml) then washed with water (20 ml) and brine (20 ml). Organics were dried over MgSO4 and solvent was evaporated under reduced pressure. Purification by flash chromatography (10 g silica column, PE/0% to 25% acetone gradient) followed by evaporation of solvent from the appropriate fractions afforded the desired trans-product (55 mg, 0.1359 mmol, 55%) as a white solid.
The following compounds were prepared in analogy to 2-(4-fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 17): Examples 11 to 16; Examples 18 to 22; Examples 29 to 33.
4-Methyl-2-(2-methyl-5-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 11)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.15-8.17 (1H), 8.06 (1H), 7.93-7.96 (1H) 7.86 (1H), 7.73-7.76 (1H), 7.43-7.45 (1H), 4.82-4.84 (1H), 4.06-4.12 (1H), 3.75-3.79 (1H), 3.18 (3H), 2.33 (3H), 2.17-2.23 (1H), 1.87-1.92 (1H), 1.71-1.74 (1H), 1.53 (3H), 1.46-1.48 (1H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-(2-methyl-5-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 4-Methyl-2-(2-methyl-5-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-AD-H column, 0.5% DEA in MeOH, 20%)) to give [cis-EN1] SC-200 and [cis-EN2] SC-201.
[cis-EN1] SC-200—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% IPA in MeOH, 10%, Ret. Time 5.14; ee>95%
[cis-EN2] SC-201—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% IPA in MeOH, 10%, Ret. Time 6.45; ee>95%
4-Methyl-2-[3-methylsulfonyl-5-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 12)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (2H), 8.17-8.18 (2H), 8.05-8.07 (2H), 7.93-7.96 (1H), 4.80-4.83 (1H), 4.12-4.15 (1H), 3.72-3.77 (1H), 3.34 (3H), 2.15-2.21 (1H), 1.94-1.97 (1H), 1.87-1.91 (1H), 1.47-1.52 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-[3-methylsulfonyl-5-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 4-Methyl-2-[3-methylsulfonyl-5-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralcel-OJ-H column, 0.5% IPA in MeOH, 15%)) to give [cis-EN1] SC-202 and [cis-EN2] SC-203.
[cis-EN1] SC-202—analytical HPLC: Chiralcel OJ-H (250×4.6 mm 5μ), 1 mL/min, RT, 0.5% IPA in hexanes:EtOH, 65:35, Ret. Time 9.56; ee>95%
[cis-EN2] SC-203—analytical HPLC: Chiralcel OJ-H (250×4.6 mm 5μ), 1 mL/min, RT, 0.5% IPA in hexanes:EtOH, 65:35, 10%, Ret. Time 11.3; ee>95%
2-(5-Fluoro-2-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 13)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.16-8.18 (1H), 8.05 (1H), 7.97-8.00 (1H), 7.92-7.95 (1H), 7.49-7.51 (1H), 7.43-7.46 (1H), 5.20-5.22 (1H), 4.07-4.10 (1H), 3.83-3.87 (1H), 3.27 (3H), 2.16-2.22 (1H), 1.96-1.97 (1H), 1.83-1.87 (1H), 1.46-1.50 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(5-Fluoro-2-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
Cis-rac 2-(5-Fluoro-2-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-IE column, co-solvent MeOH) to give cis-EN1 SC-204 and cis-EN2 SC-205.
cis-EN1 SC-204—analytical SFC: Chiralpak IE (250×4.6 mm 5μ), 3 g/min, RT, 0.5% diethylamine in MeOH (30%), Ret. Time 2.07; ee>95%
cis-EN2 SC-205—analytical SFC: Chiralpak IE (250×4.6 mm 5μ), 3 g/min, RT, 0.5% diethylamine in MeOH (30%), Ret. Time 2.37; ee>95%
4-Methyl-2-(3-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (example 14)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.15-8.16 (1H), 8.04 (1H), 7.93-7.96 (1H), 7.86-7.87 (1H), 7.40-7.41 (2H), 4.62-4.65 (1H), 4.06-4.08 (1H), 3.69-3.73 (1H), 3.20 (3H), 2.63 (3H), 2.11-2.16 (1H), 1.84-1.88 (1H), 1.76-1.78 (1H), 1.51 (3H), 1.44-1.49 (1H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-(3-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 4-Methyl-2-(3-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralcel-OJ-H column, 0.5% DEA in MeOH, 20%)) to give [cis-EN1] SC-206 and [cis-EN2] SC-207.
[cis-EN1] SC-206—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 40%, Ret. Time 1.91; ee>95%
[cis-EN2] SC-207—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 40%, Ret. Time 2.16; ee>95%
2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 15)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.15-8.17 (1H), 8.05 (1H), 7.93-7.96 (1H), 7.83-7.86 (1H), 7.47-7.49 (1H), 7.44-7.45 (1H), 4.69-4.71 (1H), 4.08-4.11 (1H), 3.71-3.75 (1H), 3.32 (3H), 2.11-2.16 (1H), 1.83-1.84 (2H), 1.48-1.51 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
cis-rac 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-OJ-H column, co-solvent 0.5% diethylamine in MeOH) to give cis-EN1 SC-208 and cis-EN2 SC-209.
cis-EN1 SC-208—analytical HPLC: Chiralpak IA (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/EtOH 60/40, Ret. Time 7.25; ee>95%/specific rotation [α]D27.6 +16.3° (c 0.75; DCM);
cis-EN2 SC-209—analytical HPLC: Chiralpak IA (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/EtOH 60/40, Ret. Time 11.28; ee>95%/specific rotation [α]D28.3 −19.6° (c 0.83; DCM).
4-Methyl-2-(4-methyl-3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (xxample 16)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.15-8.16 (1H), 8.04 (1H), 7.93-7.95 (1H), 7.88 (1H), 7.55-7.57 (1H), 7.43-7.44 (1H), 4.64-4.66 (1H), 4.06-4.09 (1H), 3.68-3.73 (1H), 3.20 (3H), 2.62 (3H), 2.12-2.17 (1H), 1.85-1.90 (1H), 1.75-1.77 (1H), 1.45-1.50 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-(4-methyl-3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 4-Methyl-2-(4-methyl-3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-IA column, 0.5% DEA in MeOH, 35%)) to give [cis-EN1] SC-210 and [cis-EN2] SC-211.
[cis-EN1] SC-210—analytical SFC: Chiralpak IC (250×4.6 mm 5μ), 4 g/min, RT, 0.5% DEA in MeOH, 40%, Ret. Time 2.41; ee>95%
[cis-EN2] SC-211—analytical SFC: Chiralpak IC (250×4.6 mm 5μ), 4 g/min, RT, 0.5% DEA in MeOH, 40%, Ret. Time 2.98; ee>95%
[[2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-4-yl]-methyl]-dimethyl-amine (Example 18)




A solution of 2-(4-chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (5 g, 12.37 mmol) in dry THF (100 mL) was cooled to −78° C. and added n-butyl lithium (2.5M) (9.90 mL, 24.75 mmol), stirred for 2 h and added N, N-dimethylmethylene iminium iodide (5.72 g, 30.92 mmol) and the whole mixture was allowed to attain RT and stirred for 16 h. The reaction mass was quenched with aq. NH4Cl solution and extracted with EtOAc (2×400 mL). Combined organic layer was washed with brine solution (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude. The crude upon purification by CC (silica gel 0-13% EtOAc in PE) gave [[2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-4-yl]-methyl]-dimethyl-amine (1.3 g, 23%) as an off-white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.13 (3H); 7.85 (1H), 7.41-7.39 (2H), 7.32 (2H), 4.65-4.62 (1H), 4.06-4.02 (1H), 3.73 (1H), 3.13-3.06 (2H), 2.18 (6H), 2.08-2.07 (2H), 1.89-1.85 (2H), 1.65-1.62 (1H).
NOE: C-2 proton & CH2 (of CH2NMe2 group)=cis
Chiral resolution of [[2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-4-yl]-methyl]-dimethyl-amine
cis-rac [[2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-4-yl]-methyl]-dimethyl-amine was subjected to preparative chiral-SFC (Chiralcel-OJ-H column, co-solvent 0.5% diethylamine in MeOH) to give cis-EN1 SC-214 and cis-EN2 SC-215.
cis-EN1 SC-214—analytical SFC: Chiralcel-OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% diethylamine in MeOH (30%), Ret. Time 1.82; ee>95%
cis-EN2 SC-215—analytical SFC: Chiralcel-OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% diethylamine in MeOH (30%), Ret. Time 2.00; ee>95%
2-(4-Chlorophenyl)-4-(methoxymethyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 19)




A solution of 2-(4-chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (5 g, 12.37 mmol) in dry THF (100 mL) was cooled to −78° C. and added n-butyl lithium (2.5 M) (9.90 mL, 24.75 mmol), stirred for 2 h and added chloromethyl methyl ether (2.33 mL, 30.92 mmol) and the whole mixture was allowed to attain RT and stirred for 16 h. The reaction mass was quenched with aq. NH4Cl solution and extracted with EtOAc (2×300 mL). Combined organic layer was washed with brine solution (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude. The crude upon purification by CC (silica gel 100-200 mesh, 0-13% EtOAc in PE) gave 2-(4-Chlorophenyl)-4-(methoxymethyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (1.1 g, 20%) as an off-white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.15-8.09 (2H), 8.04 (1H), 7.85 (1H), 7.41 (2H), 7.34 (2H), 4.57 (1H), 4.07-4.03 (1H), 3.99-3.92 (2H), 3.69 (1H), 3.08 (3H), 2.16-2.14 (1H), 1.91 (1H), 1.78 (1H), 1.61 (1H).
NOE: C-2 proton & CH2 (MOM-Group)=cis
Chiral resolution of 2-(4-Chlorophenyl)-4-(methoxymethyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
cis-rac 2-(4-Chlorophenyl)-4-(methoxymethyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (1.0 g) was subjected to preparative chiral-SFC (Chiralcel-OJ-H column, co-solvent 0.5% diethylamine in MeOH) to give cis-EN1 SC-216 (165 mg) and cis-EN2 SC-217 (168 mg).
cis-EN1 SC-216—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% diethylamine in MeOH (30%), Ret. Time 1.92; ee>95%
cis-EN2 SC-217—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% diethylamine in MeOH (30%), Ret. Time 2.16; ee>95%
2-(2-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 20)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.17-8.18 (1H), 8.06 (1H), 7.98 (1H), 7.93-7.95 (2H), 7.77-7.78 (1H), 4.91-4.93 (1H), 4.10-4.14 (1H), 3.81-3.84 (1H), 3.29 (3H), 2.14-2.20 (1H), 1.88-1.90 (1H), 1.76-1.80 (1H), 1.50-1.53 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(2-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
cis-rac 2-(2-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-AD-H column, co-solvent 0.5% diethylamine in MeOH) to give cis-EN1 SC-218 and cis-EN2 SC-219.
cis-EN1 SC-218—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% diethylamine in MeOH (30%), Ret. Time 4.00; ee>95%
cis-EN2 SC-219—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% diethylamine in MeOH (30%), Ret. Time 4.50; ee>95%
4-Methyl-2-(3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 21)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.16-8.18 (1H), 7.93-7.96 (1H), 7.90 (1H), 7.85-7.86 (1H), 7.69-7.70 (1H), 7.62-7.65 (1H), 4.70-4.72 (1H), 4.08-4.11 (1H), 3.71-3.75 (1H), 3.21 (3H), 2.14-2.19 (1H), 1.88-1.92 (1H), 1.81-1.83 (1H), 1.52 (3H), 1.48-1.50 (1H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-(3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
Cis-rac 4-Methyl-2-(3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-IC column, co-solvent EtOH) to give cis-EN1 SC-220 and cis-EN2 SC-221.
cis-EN1 SC-220—analytical HPLC: Chiralcel IA (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/EtOH 50/50, Ret. Time 5.06; ee>95%
cis-EN2 SC-221—analytical HPLC: Chiralcel IA (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/EtOH 50/50, Ret. Time 6.05; ee>95%
4-Methyl-2-(2-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 22)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.16-8.17 (1H), 8.04 (1H), 7.91-7.95 (2H), 7.75-7.76 (2H), 7.58-7.61 (1H), 5.24-5.26 (1H), 4.07-4.10 (1H), 3.82-3.86 (1H), 3.27 (3H), 2.17-2.22 (1H), 1.94-1.96 (1H), 1.85-1.89 (1H), 1.48-1.51 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-(2-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
Cis-rac 4-Methyl-2-(2-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-IE column, co-solvent 0.5% formic acid in MeOH) to give cis-EN1 SC-223 and cis-EN2 SC-222.
cis-EN1 SC-223—analytical HPLC: Chiralcel OX-H (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/EtOH 60/40, Ret. Time 6.48; ee>95%
cis-EN2 SC-222—analytical HPLC: Chiralcel OX-H (250×4.6 mm 5μ), 1 ml/min, RT, 0.1% TFA in hexane/EtOH 60/40, Ret. Time 8.00; ee>95%
4-Methyl-2-[4-methylsulfonyl-3-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (example 29)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.23 (1H), 8.16-8.17 (1H), 8.05 (1H), 7.97 (1H), 7.93-7.95 (2H), 4.78-4.81 (1H), 4.11-4.14 (1H), 3.72-3.76 (1H), 2.12-2.16 (1H), 1.89-1.91 (1H), 1.82-1.86 (1H), 1.48-1.52 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-[4-methylsulfonyl-3-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 4-Methyl-2-[4-methylsulfonyl-3-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralcel-OJ-H column, 0.5% DEA in MeOH, 10%)) to give [cis-EN1] SC-235 and [cis-EN2] SC-236.
[cis-EN1] SC-235—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 20%, Ret. Time 2.19; ee>95%
[cis-EN2] SC-236—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 20%, Ret. Time 2.47; ee>95%
2-(4-Chloro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (example 30)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.16-8.17 (1H), 8.05 (1H), 8.03 (1H), 7.93-7.95 (1H), 7.69-7.73 (2H), 4.71-4.73 (1H), 4.08-4.11 (1H), 3.70-3.74 (1H), 3.37 (3H), 2.13-2.18 (1H), 1.80-1.89 (2H), 1.51 (3H), 1.46-1.49 (1H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(4-Chloro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(4-Chloro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-IC column, MeOH, 30%)) to give [cis-EN1] SC-237 and [cis-EN2] SC-238.
[cis-EN1] SC-237—analytical SFC: Chiralpak IC (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 35%, Ret. Time 3.62; ee>95%
[cis-EN2] SC-238—analytical SFC: Chiralpak IC (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 35%, Ret. Time 4.17; ee>95%
2-(3-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (example 31)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.15-8.16 (1H), 8.05 (1H), 8.02-8.03 (1H), 7.93-7.96 (1H), 7.69 (1H), 7.58-7.60 (1H), 4.68-4.71 (1H), 4.08-4.11 (1H), 3.70-3.74 (1H), 3.36 (3H), 2.11-2.16 (1H), 1.81-1.86 (2H), 1.48-1.51 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(3-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(3-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralcel-OJ-H column, MeOH, 20%)) to give [cis-EN1] SC-239 and [cis-EN2] SC-240.
[cis-EN1] SC-239—analytical SFC: Chiralcel-OJ-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 35%, Ret. Time 2.33; ee>95%
[cis-EN2] SC-240—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 35%, Ret. Time 2.93; ee>95%
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (example 32)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.17-8.18 (1H), 8.06 (1H), 7.93-7.96 (1H), 7.77-7.81 (2H), 7.73-7.75 (1H), 4.91-4.93 (1H), 4.08-4.11 (1H), 3.77-3.81 (1H), 3.28 (3H), 2.14-2.19 (1H), 1.94-1.98 (1H), 1.74-1.76 (1H), 1.50-1.52 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-IE column, EtOH, 30%)) to give [cis-EN1] SC-241 and [cis-EN2] SC-242.
[cis-EN1] SC-241—analytical SFC: Chiralpak-IE (250×4.6 mm 5μ), 3 g/min, RT, EtOH, 25%, Ret. Time 5.3; ee>95%/specific rotation [α]D25.4 −23.4° (c 0.92; DCM).
[cis-EN2] SC-242—analytical SFC: Chiralpak-IE (250×4.6 mm 5μ), 3 g/min, RT, EtOH, 25%, Ret. Time 5.91; ee>95%/specific rotation [α]D25.4 +23.1° (c 0.95; DCM).
2-(3-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (example 33)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.17.8.18 (1H), 8.05 (1H), 7.93-7.96 (1H), 7.90 (1H), 7.87 (1H), 7.78 (1H), 4.70-4.72 (1H), 4.09-4.12 (1H), 3.70-3.74 (1H), 3.29 (3H), 2.13-2.18 (1H), 1.84-1.90 (2H), 1.42-1.51 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(3-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(3-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-AS-H column, MeOH, 30%)) to give [cis-EN1] SC-243 and [cis-EN2] SC-244.
[cis-EN1] SC-243—analytical SFC: Chiralpak-AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 3.51; ee>95%
[cis-EN2] SC-244—analytical SFC: Chiralpal-AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 4.42; ee>95%.
The following compound was prepared in analogy to 2-(4-chlorophenyl)-4-(methoxymethyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 19):
2-(4-Chlorophenyl)-4-(phenylmethoxy-methyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (example 28)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.10-8.11 (1H), 8.02-8.04 (2H), 7.77-7.79 (1H), 7.41-7.42 (2H), 7.31-7.32 (2H), 7.23-7.27 (3H), 6.96-6.98 (2H), 4.52-4.54 (1H), 4.33-4.38 (2H), 4.04-4.12 (3H), 3.65-3.69 (1H), 2.18-2.23 (1H), 1.89-1.97 (2H), 1.72-1.74 (1H).
NOE: C-2 proton & —CH2—O=cis (SC-234).
6-(4-Chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 34)




Step 1: 6-(4-Chlorophenyl)-2,2-dimethyltetrahydro-2H-pyran-4-yl methanesulfonate
A solution of 4-chlorobenzaldehyde (10 g, 71.1 mmol) and 2-methylpent-4-en-2-ol (7.84 g, 78 mmol) in CH2Cl2 (150 mL) was cooled in a NaCl/ice-bath to −16° C. under N2. A solution of methanesulfonic acid (46.2 mL, 711 mmol) in DCM (50 mL) was added dropwise over 30 min, keeping the temperature below −10° C. The mixture was stirred for 15 min. The RM was cautiously basified with a solution of aq. 1.4M Na2CO3 (500 mL) and the product was extracted with i-Pr2O (2×300 mL). The combined organic layers were washed with sat. aq. NaHCO3 (2×100 mL) and brine (2×100 mL) before drying on Na2SO4 and concentration in vacuo. The product was purified using flash chromatography (silica, gradient heptane/acetone, 97:3→7:3) to give the desired product (5.4 g, 23%) as a light yellow oil.
Step 2: 6-(4-Chlorophenyl)-2,2-dimethyl-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
A solution of 6-(4-chlorophenyl)-2,2-dimethyltetrahydro-2H-pyran-4-yl methanesulfonate (4 g, 12.55 mmol) in dry DMF (80 mL) was degassed by bubbling Ar for 1 h. Cs2CO3 (18.4 g, 56.5 mmol) was added and after 5 min, 3-(trifluoromethyl)benzenethiol (11.7 mL, 88 mmol) was added. The mixture was stirred at 80° C. under Ar for 20 h. The RM was cooled down to RT and carefully acidified with aq. 1M KHSO4 (60 mL). The product was extracted with EtOAc/i-Pr2O (1/1, v/v, 2×60 mL) and the combined organic layers were washed with aq. 1M KHSO4 (2×40 mL) and brine (2×40 mL) before drying on Na2SO4 and concentration in vacuo. The product was filtered over silica (heptane/EtOAc, 100:0→1:1) and subsequently purified using flash chromatography (silica, gradient heptane/acetone, 99:1→95:5) to give the desired product (3.21 g, 63%) as a colorless oil.
Step 3: 6-(4-Chlorophenyl)-2,2-dimethyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
Oxone (9.85 g, min. 27.7 mmol) was dissolved in H2O (70 mL) upon slight heating and this solution was added in one portion to a solution of 6-(4-chlorophenyl)-2,2-dimethyl-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (3.21 g, 8.01 mmol) in MeOH (100 mL). An exothermic reaction took place, after which an ice bath was applied. The mixture was stirred at 0° C. for 10 min, then at RT for 20 h. MeOH was distilled off in vacuo and the residue was partitioned between H2O (100 mL) and EtOAc (100 mL). The aq. layer was extracted with EtOAc (100 mL) and the combined organic layers were washed with H2O (2×50 mL), sat. aq. NaHCO3 (2×50 mL) and brine (2×50 mL) before drying on Na2SO4 and concentration in vacuo. The product was purified using flash chromatography (silica, gradient heptane/acetone, 99:1→8:2) to give 3.29 g (95%) of the desired product.
Step 4: 6-(4-Chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
This reaction was carried out under Ar. A solution of 6-(4-chlorophenyl)-2,2-dimethyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.965 g, 2.229 mmol) in dry THF (12 mL) was cooled to −78° C., 1M KOt-Bu in THF (6.69 mL, 6.69 mmol) was added dropwise over 5 min, keeping the temperature below −75° C. The mixture was stirred at −78° C. for 20 min, then MeI (555 μL, 8.92 mmol) was added and the stirring was continued from −78° C. to RT for 20 h. More MeI (0.139 mL, 2.229 mmol) was added and the stirring was continued at RT for 4 h. The RM was poured out in sat. aq. NaHCO3 (50 mL) and extracted with EtOAc (100 mL). The organic layer was washed with sat. aq. NaHCO3 (2×25 mL), aq. 1M Na2S2O3 (2×25 mL) and brine (2×25 mL) before drying on Na2SO4 and concentration in vacuo. The product was purified using flash chromatography (silica, gradient heptane/EtOAc, 95:5→60:40) to give 334 mg (33%) of cis-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran as a colorless oil/foam. The cis-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran fractions were combined with cis-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran of two additional reactions (both started with 100 mg of 6-(4-chlorophenyl)-2,2-dimethyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran). The product was purified using flash chromatography (silica, gradient heptane/EtOAc, 1:0→1:1) and combined with the earlier obtained batch to give cis-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (403 mg, 33%) as a colorless oil/foam. This crude product was purified further using flash chromatography (silica, gradient heptane/EtOAc, 95:5→60:40) to give trans-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran SC-302 (146 mg, 12%) as a colorless oil.
1H NMR (400 MHz, CDCl3) of cis-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran: δ 8.12 (s, 1H), 8.02 (d, J=7.9 Hz, 1H), 7.94 (d, J=7.8 Hz, 1H), 7.73 (t, J=7.8 Hz, 1H), 7.35-7.27 (m, 4H), 4.62 (dd, J=11.5, 1.9 Hz, 1H), 2.26 (d, J=13.3 Hz, 1H), 2.08 (t, J=12.2 Hz, 1H), 1.68 (dt, J=12.9, 1.9 Hz, 1H), 1.63 (s, 3H), 1.57-1.51 (m, 1.9H) [overlap with H2O signal], 1.38 (s, 3H), 1.35 (s, 3H).
1H-NMR (400 MHz, CDCl3) of trans-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran SC-302: δ 8.15 (s, 1H), 8.08 (d, J=7.9 Hz, 1H), 7.95 (d, J=7.9 Hz, 1H), 7.75 (t, J=7.8 Hz, 1H), 7.36-7.28 (m, 4H), 4.99 (dd, J=11.0, 4.1 Hz, 1H), 2.58 (dd, J=14.8, 4.1 Hz, 1H), 2.48 (d, J=14.5 Hz, 1H), 1.65-1.51 (m, 5.5H) [overlap with H2O signal], 1.46 (s, 3H), 1.43 (s, 3H), 1.37 (s, 3H).
The relative stereochemistry was assigned by comparing the central ring signals in the 1H-NMRs with the spectra of cis-rac and trans-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran.
Chiral resolution of cis-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
cis-rac 6-(4-chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (403 mg, 0.902 mmol) was subjected to preparative chiral-LC (AD-H-column, heptane/i-PrOH, 97.5:2.5). The solvents were removed under reduced pressure to give 170 mg (42%) of cis-EN1 SC-300 and 173 mg (43%) of cis-EN2 SC-301.
cis-EN1 SC-300—analytical chiral HPLC: chiracel AD-H (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 98/2, Ret. Time 14.283; ee>95%
cis-EN2 SC-301—analytical chiral HPLC: chiracel AD-H (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 98/2, Ret. Time 17.708; ee>95%
2-(4-Chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran (Example 35)




The synthesis was carried out in analogy to 2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran (see above).
The crude product obtained in the last step was coated on silica (4 g) and purified using flash chromategraphy (silica, gradient heptane/EtOAc, 1:0→3:1) to give 510 mg (56%) of cis-rac 2-(4-chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran and 90 mg (10%) of trans-rac 2-(4-chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran SC-305.
1H NMR (400 MHz, CDCl3) of cis-rac 2-(4-chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran: δ 7.93 (s, 1H), 7.76 (d, J=7.1 Hz, 1H), 7.66 (d, J=7.7 Hz, 1H), 7.36-7.30 (m, 2H), 7.29-7.21 (m, 6H) [overlap with CHCl3 signal], 4.42 (dd, J=11.4, 2.0 Hz, 1H), 4.22-4.14 (m, 1H), 3.71 (td, J=12.4, 2.2 Hz, 1H), 2.35 (td, J=12.7, 5.3 Hz, 1H), 2.13 (t, J=12.3 Hz, 1H), 1.75 (dt, J=13.0, 2.2 Hz, 1H), 1.58 (s, 3H), 1.56-1.51 (m, 1H).
1H-NMR (400 MHz, CDCl3) of trans-rac 2-(4-chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran SC-305: δ 7.97 (s, 1H), 7.81 (d, J=7.2 Hz, 1H), 7.68 (d, J=7.8 Hz, 1H), 7.37-7.28 (m, 4H), 5.16 (dd, J=11.7, 2.3 Hz, 1H), 4.39 (td, J=12.4, 2.5 Hz, 1H), 4.07 (dd, J=12.0, 4.4 Hz, 1H), 2.43 (d, J=15.4 Hz, 1H), 2.29-2.21 (m, 1H), 1.85 (ddd, J=15.5, 12.7, 5.7 Hz, 1H), 1.62 (dd, J=15.4, 11.7 Hz, 1H), 1.24 (s, 3H).
The relative stereochemistry was assigned by comparing the central ring signals in the 1H-NMRs with the spectra of cis-rac and trans-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydropyran.
Chiral resolution of cis-rac 2-(4-chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran
cis-rac 2-(4-chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran (510 mg, 1.167 mmol) was subjected to preparative chiral LC (IC-column, heptane/i-PrOH 95:5). This gave 199 mg (39%) of cis-EN1 SC-303 as a white solid and 185 mg (36%) of cis-EN2 SC-304 also as a white solid.
cis-EN1 SC-303—analytical chiral HPLC: chiralpak IC (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 95/5, Ret. Time 8.992; ee>90%
cis-EN2 SC-304—analytical chiral HPLC: chiralpak IC (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 95/5, Ret. Time 11.884; ee>95%
2-Cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 36)




Step 1: 2-Cyclopropyltetrahydro-2H-pyran-4-yl methanesulfonate
A solution of cyclopropanecarbaldehyde (2.132 mL, 28.5 mmol) in DCM (25 mL) was prepared, followed by applying an ice/water bath and dropwise addition of methanesulfonic acid (18.5 mL, 285 mmol). Subsequently, 3-buten-1-ol (2.95 mL, 34.2 mmol) was added dropwise. The RM was stirred at 0° C. for 1.5 h. A solution of K3PO4 (45.4 g, 214 mmol) in H2O (400 mL) was prepared and immersed in an ice/water bath. The RM was transferred into a separation funnel and added dropwise to the stirred and chilled aq. K3PO4 solution. The temperature was kept below 5° C. Subsequently, DCM (125 mL) was added, followed by some sat. aq. Na2CO3 to set the pH at 7-8. Addition of DCM (100 mL) and H2O (100 mL) was followed by separation of the phases. The aq. layer was extracted with DCM (50 mL). The combination of organic layers was washed with sat. aq. NaHCO3 (50 mL), dried (2× brine and Na2SO4) and concentrated to yield 5.74 g (91%) of the desired product as a slightly brown oil.
Step 2: 2-Cyclopropyl-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
A solution of 2-cyclopropyltetrahydro-2H-pyran-4-yl methanesulfonate (2.00 g, 9.08 mmol) in dry MeCN (100 mL) was degassed by N2 bubbling for 1 h. K2CO3 (2.510 g, 18.16 mmol) was added, followed by 3-(trifluoromethyl)benzenethiol (2.414 mL, 18.16 mmol). The RM was stirred at 50° C. overnight. Addition of EtOAc (100 mL) and silica (2.5 g) was followed by filtration over a cotton plug. The residue was washed with EtOAc (2×25 mL), the combination of filtrates was concentrated. The residue was absorbed on silica and used for flash chromatography (silica, gradient heptane/EtOAc, 1:0→8:2) to result in 1.40 g (51%) of the desired product as a slightly yellow oil.
Step 3: 2-Cyclopropyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
2-Cyclopropyl-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (1.38 g, 4.56 mmol) was dissolved in MeOH (45 mL). An ice/water bath was applied. Oxone (7.01 g, min. 19.7 mmol) was almost completely dissolved in H2O (25 mL), the turbid solution was added portionwise. During the addition, a raise of temperature was observed, the temperature was kept below 15° C. The RM was stirred vigorously at RT for 4 h. The major part of the MeOH was removed from the RM by rotary evaporation. The resulting suspension was mixed with H2O (150 mL) and EtOAc (150 mL) to result in a clear two phase system. The layers were separated and the aq. layer was extracted with EtOAc (50 mL). The combined organic layers were washed with sat. aq. NaHCO3 (50 mL), dried (brine and Na2SO4) and concentrated. The resulting oil was dissolved in CH2Cl2 (10 mL), this solution was added to heptane (50 mL). The turbid solution was concentrated to around 20 mL, the solution was separated from the oily precipitate and discarded. The oily precipitate was concentrated to yield 1.42 g (93%) of the desired product as a clear syrup.
Step 4: 2-Cyclopropyl-4-ethyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
A solution of 2-cyclopropyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.39 g, 4.16 mmol) in dry THF (20 mL) was prepared, the temperature was lowered to −78° C., 1 M KOt-Bu in THF (4.57 mL, 4.57 mmol) was added dropwise and the RM was stirred for 10 min. Addition of C2H5I (0.665 mL, 8.31 mmol) was followed by stirring at −78° C. for 1 h. The flask was left in the cooling bath. Consequently, the temperature was kept at −78° C. for a few hours, followed by slow raise of temperature to RT and stirring overnight at RT. The RM was combined with aq. 0.5 M HCl (100 mL), some ice and EtOAc (100 mL) to result in a two phase system. The layers were separated, the aq. layer was extracted with EtOAc (25 mL). The combination of organic layers was washed with aq. 1 M Na2S2O3 (2×30 mL), sat. aq. NaHCO3 (50 mL) and dried (brine and Na2SO4), followed by concentration. The residue was used for flash chromatography (silica, gradient heptane/EtOAc, 99:1→7:3) to provide different fractions. One fraction contained mainly cis-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran and was processed further in this procedure. Another fraction contained mainly the starting material 2-cyclopropyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.72 g) and was used for a second synthesis (see below).
A solution of 2-cyclopropyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.72 g, 2.153 mmol) in dry THF (10 mL) was prepared, the temperature was lowered to −40° C. with a dry ice/MeCN cooling bath, 1 M KOt-Bu in THF (6.46 mL, 6.46 mmol) was added dropwise and the RM was stirred for 10 min. Dropwise addition of C2H5I (0.861 mL, 10.77 mmol) was followed by stirring at −40° C. for 30 min. The flask was left in the cooling bath. Consequently, the temperature was kept at −40° C. for a few hours, followed by slow raise of temperature to RT and stirring overnight at RT. The RM was combined with aq. 0.5 M HCl (100 mL) and EtOAc (100 mL) to result in a two phase system. The layers were separated, the aq. layer was extracted with EtOAc (25 mL). The combination of organic layers was washed with aq. 1 M Na2S2O3 (30 mL), sat. aq. NaHCO3 (50 mL) and dried (brine and Na2SO4), followed by concentration. The residue was dissolved in CH2Cl2 (2 mL), combined with the fraction from the first reaction (containing mainly cis-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran) and purified by flash chromatography (silica, gradient heptane/EtOAc, 95:5→8:2) to provide different fractions. The first eluting fraction contained predominantly trans-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran SC-308 (trans:cis, 7:3). This residue was co-evaporated with MeCN (10 mL) and dissolved in MeCN (2 mL). After H2O (2 mL) was added the resulting mixture was freeze dryed to result in 109 mg (9%) of trans-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran SC-308 (trans:cis, 7:3). Then, later eluting fractions were combined and concentrated to result in predominantly cis-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran. The residue was dissolved in i-PrOH (3 mL) upon warming, followed by portionwise addition of heptane (14 mL) to start crystallisation. The crystals were filtered off, washed with heptane and dried on a filter to yield 220 mg (14%) of pure cis-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran.
1H NMR (400 MHz, CDCl3) of cis-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran: δ 8.13 (s, 1H), 8.08 (d, J=7.8 Hz, 1H), 7.95 (d, J=7.8 Hz, 1H), 7.76 (t, J=7.8 Hz, 1H), 3.96 (dd, J=11.9, 5.1 Hz, 1H), 3.47 (td, J=12.2, 1.8 Hz, 1H), 2.69-2.55 (m, 1H), 2.05 (td, J=12.8, 5.3 Hz, 1H), 2.00-1.80 (m, 4H), 1.67-1.55 (m, 1H), 1.08 (t, J=7.5 Hz, 3H), 0.94-0.80 (m, 1H), 0.66-0.47 (m, 2H), 0.41-0.25 (m, 1H), 0.22-0.09 (m, 1H).
1H-NMR (400 MHz, CDCl3) of trans-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran SC-308 (trans:cis, 7:3): δ 8.13 (s, 0.3H), 8.08 (s, 1H), 8.04 (d, J=7.9 Hz, 0.7H), 7.95 (d, J=7.7 Hz, 1H), 7.77 (t, J=7.8 Hz, 1H), 4.24 (td, J=12.0, 2.3 Hz, 0.7H), 4.09-3.84 (m, 1H), 3.53-3.44 (m, 0.3H), 3.43-3.30 (m, 0.7H), 2.71-2.58 (m, 0.3H), 2.28-1.80 (m, 4H), 1.78-1.39 (m, 3H), 1.08 (t, J=7.5 Hz, 1H), 0.97 (t, J=7.4 Hz, 2H), 0.93-0.74 (m, 1H), 0.68-0.50 (m, 2H), 0.50-0.42 (m, 0.7H), 0.41-0.33 (m, 0.3H), 0.32-0.22 (m, 0.7H), 0.21-0.09 (m, 0.3H).
The relative stereochemistry was assigned by 2D-NMR. For trans-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran SC-308 (trans:cis, 7:3) a NOE was observed for the aromatic protons with H4ax and H2ax, while for cis-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran this interaction was not present.
Chiral resolution of cis-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
cis-rac 2-cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (403 mg, 0.902 mmol) was subjected to preparative chiral-LC (IC-column, heptane/EtOH, 95:5). Both enantiomers were dissolved in EtOAc (20 mL), followed by concentration. Both residues were dissolved in DCM (5 mL), added to heptane (30 mL) followed by concentration. The residues were suspended in heptane (2 mL). Filtration and drying on a filter provided 82 mg (37%) of cis-EN1 SC-307 and 84 mg (38%) of cis-EN2 SC-306.
cis-EN1 SC-307—analytical chiral HPLC: chiralpak IC (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/EtOH 80/20, Ret. Time 8.052; ee>95%
cis-EN2 SC-306—analytical chiral HPLC: chiralpak IC (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/EtOH 80/20, Ret. Time 10.001; ee>95%
(2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 37)




Step 1 & 2: 2-(4-Chlorophenyl)tetrahydro-2H-pyran-4-ol
To a solution of 4-chlorobenzaldehyde (10 g, 71.1 mmol) in a mixture of TFA (79 mL, 1032 mmol) and DCM (150 mL) was added but-3-en-1-ol (6.12 mL, 71.1 mmol) at RT. The mixture was stirred at RT for 26 h. The RM was concentrated in vacuo, cooled in an ice bath and basified with aq. 6M NaOH. The product was extracted with EtOAc (2×100 mL). The combined organic layers were washed with sat. aq. NaHCO3 (2×50 mL), aq. 1M KHSO4 (2×50 mL) and brine (2×50 mL) before drying on Na2SO4 and concentration in vacuo to give a mixture of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl 2,2,2-trifluoroacetate and 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol as a dark yellow oil. The product was dissolved in MeOH (50 mL) and LiOH.H2O (1.85 g, 44 mmol) was added. The mixture was stirred at RT for 30 min. The RM was concentrated in vacuo and the residue was diluted with EtOAc (100 mL) before acidification with aq. 1M KHSO4. The product was extracted with EtOAc (1×100 mL) and the combined organic layers were washed with aq. 1M KHSO4 (2×50 mL) and brine (2×50 mL) before drying on Na2SO4 and concentration in vacuo to give a yellow oil. The product was purified using CC (silica, heptane/acetone, 99:1→1:1) to give 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (4.02 g, 26%) as a white solid. Also, impure fractions were obtained which were combined, concentrated in vacuo and purified using flash chromatography (silica, gradient heptane/acetone, 99:1→1:1) to give another batch of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (3.70 g, 24%) as a white solid. Total yield: 7.73 g (51%).
Step 3: 2-(4-Chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
A solution of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (7.52 g, 35.4 mmol) in DCM (50 mL) was cooled in an ice bath under N2. DIPEA (17 mL, 97 mmol) was added, followed by slow addition of MsCl (4.2 mL, 54.3 mmol) via a syringe. The mixture was stirred at RT for 24 h. The RM was concentrated in vacuo and the residue was partitioned between a mixture of aq. 1M KHSO4 (100 mL), brine (50 mL), H2O (50 mL) and EtOAc/i-Pr2O (1/1, v/v, 200 mL). The aq. layer was extracted with EtOAc/i-Pr2O (1/1, v/v, 100 mL) and the combined organic layers were washed with aq. 1M KHSO4 (2×50 mL), sat. aq. NaHCO3 (2×50 mL) and brine (2×50 mL) before drying on Na2SO4 and concentration in vacuo to give a dark orange oil. The product was purified using flash chromatography (silica, gradient heptane/acetone, 99:1→1:1) to give 9.25 g (90%) of the desired product.
Step 4: 2-(4-Chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
A solution of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (9 g, 31.0 mmol) in dry DMF (200 mL) was degassed by alternating vacuum and Ar 5 times over 10 min. K2CO3 (8.56 g, 61.9 mmol) was added and the mixture was degassed two more times. Via a syringe, 3-(trifluoromethyl)-benzenethiol (27.6 g, 155 mmol) was added over 2 min and the mixture was degassed two more times. The mixture was stirred at 50° C. under Ar for 20 h. The RM was partitioned between H2O (250 mL) and i-Pr2O (250 mL). The layers were separated and the aq. layer was extracted with i-Pr2O (250 mL). The combined organic layers were washed with H2O (2×100 mL), sat. aq. NaHCO3 (3×100 mL), aq. 1M KHSO4 (3×100 mL) and brine (2×100 mL) before drying on Na2SO4 and concentration in vacuo to give a yellow oil. The product was purified using flash chromatography (silica, gradient, heptane/acetone, 100:0→3:1) to give the desired product (10.74 g, 93%) as a light yellow oil.
Step 5: 2-(4-Chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To a cooled solution of 2-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (5 g, 13.41 mmol) in MeOH (160 mL) was added a solution of oxone (16.49 g, min. 46.4 mmol) in H2O (110 mL) at such rate the temperature did not exceed 20° C. The white suspension was stirred at 0° C. for 1 h, then at RT for 20 h. MeOH was distilled off in vacuo and the residue was extracted with EtOAc (2×150 mL). The organic layer was washed with sat. aq. NaHCO3 (3×50 mL) and brine (2×50 mL) before drying on Na2SO4 and concentration in vacuo to give a white solid. The product was coated onto silica (14 g) and subsequently purified using flash chromatography (silica, gradient heptane/acetone, 1:0 to 3:1) to give 4.14 g (76%) of the desired product as a white solid.
Step 6: (2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
To a cooled (−78° C., acetone/dry ice) solution of 2-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.7 g, 4.20 mmol) in dry THF (25 mL) under N2, KOt-Bu (0.707 g, 6.30 mmol) was added followed by MeI (0.525 mL, 8.40 mmol). The RM was stirred at −78° C. for 1 h. Subsequently, the RM was allowed to warm to RT over the course of 18 h. The RM was combined with a RM prepared in the same manner starting from 1.7 g of 2-(4-chlorophenyl)-4-((3-(trifluoromethyl)phenyl)-sulfonyl)tetrahydro-2H-pyran. The combined mixtures were quenched with half sat. aq. NH4Cl (2 mL), diluted with EtOAc (100 mL) and subsequently approximately half of the solvents were removed under reduced pressure in order to remove most of the THF. The mixture was diluted with EtOAc (100 mL) and washed with sat. aq. NaHCO3 (1×100 mL), half sat. aq. NaCl (100 mL) and brine (100 mL). The organics were dried over Na2SO4 and concentrated under reduced pressure to obtain an orange oil which was immediately diluted with CH2Cl2 (5 mL) to prevent solidification. The product was purified using flash chromatography (silica, gradient heptane/acetone, 1:0→3:1) to give 2.77 g (77%) of trans-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran and impure cis-rac product which was purified further using flash chromatography (silica, gradient heptane/acetone, 1:0→3:1) to give 160 mg (5%) of cis-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran.
1H-NMR (400 MHz, CDCl3) of cis-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran: δ 8.13 (s, 1H), 8.04 (d, J=7.9 Hz, 1H), 7.94 (d, J=7.8 Hz, 1H), 7.73 (t, J=7.8 Hz, 1H), 7.34-7.28 (m, 2H), 7.28-7.19 (m, 2H), 4.41 (dd, J=11.5, 2.0 Hz, 1H), 4.21-4.11 (m, 1H), 3.70 (td, J=12.4, 2.2 Hz, 1H), 2.35 (td, J=12.8, 5.4 Hz, 1H), 2.14 (t, J=12.3 Hz, 1H), 1.74 (dt, J=13.0, 2.2 Hz, 1H), 1.62-1.50 (s, 4H).
1H-NMR (400 MHz, CDCl3) of trans-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran: δ 8.17 (s, 1H), 8.10 (d, J=7.9 Hz, 1H), 7.97 (d, J=7.8 Hz, 1H), 7.77 (t, J=7.8 Hz, 1H), 7.36-7.29 (m, 4H), 5.20 (dd, J=11.7, 2.4 Hz, 1H), 4.41 (td, J=12.4, 2.5 Hz, 1H), 4.12-3.98 (m, 1H), 2.42 (dt, J=15.3, 2.0 Hz, 1H), 2.32-2.21 (m, 1H), 1.83 (ddd, J=15.4, 12.7, 5.7 Hz, 1H), 1.67-1.53 (m, 1H), 1.22 (s, 3H).
The relative stereochemistry was assigned by 2D-NMR. For trans-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran a NOE was observed for the sulfone aromate with H2ax and H4ax. For cis-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran a NOE was observed for the sulfone aromate with H1ax en H5ax and also a NOE was observed for the Me-group with H4ax.
Chiral resolution of cis-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
cis-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (160 mg, 0.382 mmol) was subjected to preparative chiral-LC (IC-column, heptane/i-PrOH, 95:5) to give 49 mg (31%) of cis-EN1 SC-309 and 47 mg (29%) of cis-EN2 SC-310.
cis-EN1 SC-309—analytical HPLC: chiralpak IC (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 95/5, Ret. Time 14.214; ee>95%/specific rotation [α]D25.1 −18.5° (c 0.99; DCM);
cis-EN2 SC-310—analytical HPLC: chiralpak IC (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 95/5, Ret. Time 17.158; ee>95%/specific rotation [α]D25.3 +19.3° (c 0.96; DCM).
Chiral resolution of trans-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Trans racemic](2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (650 mg, 1.552 mmol) was subjected to preparative chiral-LC (IC-column, heptane/i-PrOH, 95:5) to give 282 mg (43%) of trans-EN1 SC-311 and 251 mg (39%) of trans-EN2 SC-312.
trans-EN1 SC-311—analytical chiral HPLC: chiralpak IC (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 95/5, Ret. Time 8.292; ee>95%
trans-EN2 SC-312—analytical chiral HPLC: chiralpak IC (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 95/5, Ret. Time 14.196; ee>95%
2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran (Example 38)




Step 1 & 2: 2-(4-Chlorophenyl)tetrahydro-2H-pyran-4-ol
This reaction was carried out in a 500 mL flask equipped with a CaCl2 drying tube. To a solution of 4-chlorobenzaldehyde (10 g, 71.1 mmol) in CH2Cl2 (150 mL), TFA (79 mL, 1032 mmol) was added. Subsequently, but-3-en-1-ol (6.12 mL, 71.1 mmol) was added. The RM was stirred at RT for 114 h. The RM was concentrated under reduced pressure. Aq. 6M NaOH (50 mL) was added in small portions and the mixture was stirred for 1 h. The RM was extracted with EtOAc (2×100 mL) and the combined organic layer washed with sat. aq. NaHCO3 (2×50 mL), aq. 1 M KHSO4 (2×50 mL) and dried over Na2SO4. The solvent was removed under reduced pressure. The product was purified using CC (silica, heptane/acetone, 99:1→1:1) to give 9.91 g (66%) of the desired product as an off-white solid.
Step 3: 2-(4-Chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
A solution of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-ol (9.9 g, 46.6 mmol) in CH2Cl2 (50 mL) and DIPEA (20.33 mL, 116 mmol) was cooled to 0° C. Subsequently, methanesulfonyl chloride (5.44 mL, 69.8 mmol) was added dropwise to the solution which was subsequently stirred for 48 h at RT. The RM was concentrated under reduced pressure and the dark brown residue was partitioned between a mixture of aq. 1M KHSO4 (100 mL), brine (50 mL) and H2O (50 mL) and EtOAc/i-Pr2O (1/1, v/v, 200 mL). The aq. layer was extracted with EtOAc/i-Pr2O (1/1, v/v, 100 mL) and the combined organic layers were washed with aq. 1M KHSO4 (2×100 mL), sat. aq. NaHCO3 (2×100 mL) and brine (2×50 mL) before drying on Na2SO4 and concentration in vacuo. The product was purified using flash chromatography (silica, gradient heptane/acetone, 99:1→3:1) to give 12 g (90%) of the desired product as a tan solid.
Step 4: 2-(4-Chlorophenyl)-4-((3-(trifluoromethoxy)phenyl)thio)tetrahydro-2H-pyran
To an argon flushed suspension of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (3571 mg, 12.28 mmol) and K2CO3 (3395 mg, 24.56 mmol) in dry MeCN (35 mL), 3-(trifluoromethoxy)benzenethiol (4885 mg, 25.2 mmol) was added and the RM was stirred at 50° C. for 5 h and subsequently for 18 h at RT. Subsequently, the RM was combined with a RM prepared in the same manner from 150 mg (0.52 mmol) of 2-(4-chlorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate, diluted with EtOAc (100 mL) and filtered over silica and sand. The residue was coated on silica and purified using flash chromatography (silica, gradient heptane/i-Pr2O, 1:0→4:1) to give 4.7 g (94%) of the desired product as a colorless oil.
Step 5: 2-(4-Chlorophenyl)-4-((3-(trifluoromethoxy)phenyl)sulfonyl)tetrahydro-2H-pyran
To a cooled (0° C.) solution of 2-(4-chlorophenyl)-4-((3-(trifluoromethoxy)phenyl)thio)tetrahydro-2H-pyran (4.7 g, 12.09 mmol) in MeOH (160 mL) was added a solution of oxone (14.86 g, min. 41.8 mmol) in H2O (110 mL) at such rate the temperature did not exceed 20° C. The white suspension was stirred at 0° C. for 1 h and subsequently at RT for 20 h. The majority of the MeOH was removed under reduced pressure and the residue partitioned between half sat. aq. NaHCO3 (100 mL) and EtOAc (100 mL). Subsequently, the aq. layer was washed with EtOAc (50 mL). The organics were combined and washed with brine (100 mL), dried over Na2SO4 and concentrated under reduced pressure to afford the product as a colorless oil which solidified upon standing. The product was dissolved in EtOAc (100 mL) and co-evaporated with heptane (100 mL). The white solids were co-evaporated with pentane (2×30 mL) to give 4.95 g (97%) of the desired product as a white solid.
Step 6: 2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran
To a cooled (−78° C.) solution of 2-(4-chlorophenyl)-4-((3-(trifluoromethoxy)phenyl)sulfonyl)tetrahydro-2H-pyran (4.95 g, 11.76 mmol) in dry THF (60 mL) under N2 atmosphere, 1M KOt-Bu in THF (17.64 mmol, 17.64 mL) was added and the mixture was stirred for 10 min. Subsequently, MeI (1.471 mL, 23.52 mmol) was added. The RM was stirred at −78° C. for 1 h and subsequently for 18 h at RT. The RM was quenched with sat. aq. NH4Cl (4 mL), and the THF was removed under reduced pressure. The residue was partitioned between half sat. NaCl (100 mL) and EtOAc (200 mL). Subsequently, the organic layer was washed with half sat. NaCl (100 mL) and brine (100 mL). The organics were dried over Na2SO4 and the solvent was removed under reduced pressure. The residue was diluted with DCM (10 mL) and purified using flash chromatography (silica, gradient heptane/acetone, 1:0→4:1) to give 2.45 g (48%) of cis-rac 2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran. The remaining impure residue was subjected to an additional flash CC (silica, gradient heptane/EtOAc 1:0→8:2). The product was lyophilized using MeCN/H2O (3/1, v/v, 2 mL) to give 478 mg (9.3%) of trans-rac 2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran SC-315 as a white solid.
1H NMR (400 MHz, CDCl3) of cis-rac 2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran: δ 7.79 (d, J=7.8 Hz, 1H), 7.72 (s, 1H), 7.63 (t, J=8.0 Hz, 1H), 7.58-7.50 (m, 1H), 7.35-7.29 (m, 2H), 7.24 (d, J=8.5 Hz, 2H), 4.40 (dd, J=11.5, 2.0 Hz, 1H), 4.21-4.11 (m, 1H), 3.70 (td, J=12.4, 2.1 Hz, 1H), 2.34 (td, J=12.8, 5.4 Hz, 1H), 2.13 (t, J=12.3 Hz, 1H), 1.73 (dt, J=13.0, 2.2 Hz, 1H), 1.60-1.48 (m, 5H) [overlap with H2O signal].
1H-NMR (400 MHz, CDCl3) of trans-rac 2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran SC-315: δ 7.85 (d, J=7.8 Hz, 1H), 7.76 (s, 1H), 7.67 (t, J=8.0 Hz, 1H), 7.56 (d, J=8.3 Hz, 1H), 7.36-7.23 (m, 8H) [overlap with CHCl3 signal], 5.19 (dd, J=11.7, 2.3 Hz, 1H), 4.40 (td, J=12.4, 2.4 Hz, 1H), 4.04 (dd, J=11.9, 4.6 Hz, 1H), 2.44 (d, J=15.4 Hz, 1H), 2.31-2.22 (m, 1H), 1.82 (ddd, J=15.4, 12.7, 5.6 Hz, 1H), 1.56 (s, 5H) [overlap with H2O signal], 1.22 (s, 3H).
The relative stereochemistry was assigned by comparing the central ring signals in the 1H-NMRs with the spectra of cis-rac and trans-rac (2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran.
Chiral resolution of cis-rac 2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran
cis-rac 2-(4-chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran (600 mg, 1.380 mmol) was subjected to preparative chiral-LC (AD-H-column, heptane/i-PrOH 95:5). The solvents were removed under reduced pressure and the products lyophilised to give 254 mg (42%) of cis-EN1 SC-313 and 250 mg (42%) of cis-EN1 SC-314.
cis-EN1 SC-313—analytical chiral HPLC: Chiralcel AD-H (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 95/5, Ret. Time 16.643; ee>95%
cis-EN2 SC-314—analytical chiral HPLC: Chiralcel AD-H (250×4.6 mm 5μ), 1 ml/min, 35° C., heptane/iPrOH 95/5, Ret. Time 19.680; ee>95%
2-((4-chlorophenoxy)methyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (Example 40)
To a stirred solution of (4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)methanol (0.90 g, 2.6 mmol, 1 eq) and 4-chlorophenol (0.34 g, 2.6 mmol 1 eq) in THF (20 mL), triphenyl phosphine (1.02 g, 3.9 mmol, 1.5 eq) was added followed by addition of DEAD (0.616 g, 3.8 mmol, 1.5 eq) at 0° C. The reaction mixture was stirred for 12 h at RT. The reaction was monitored by TLC and the mixture was diluted with ethyl acetate (50 mL), washed with water (2×30 mL), brine (50 mL), dried over anhydr. sodium sulfate, filtered and evaporated under reduced pressure to get crude product which was purified by column chromatography to afford pure compound mixture of diastereomers (0.380 g, 34.5%) as white solid. Diastereomers separation was done by reverse phase prep HPLC. Major isomer was characterized as cis diastereomer by 1H-NMR and NOE experiments.
cis-isomer (SC-128, SC-129): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.39-1.41 (4H), 1.58-1.62 (1H), 1.84-1.90 (1H), 1.98-2.02 (1H), 3.52-3.58 (1H), 3.80-3.84 (1H), 3.88-3.98 (3H), 6.93-6.96 (2H), 2.28-7.32 (1H), 7.94-7.99 (1H), 8.03 (s, 1H), 8.15-8.18 (1H), 8.22-8.25 (1H).
Two enantiomers of this single diastereomer were separated by chiral prep HPLC using an AD-H column and MeOH/DEA (100/0.1) as mobile phase to obtain two cis enantiomers SC-127 and SC-128.
SC-127: (0.100 g, off white solid, 1st eluted enantiomer).
SC-128 (0.093 g, off white solid, 2nd eluted enantiomer).
General Reaction Scheme 2 for the Compounds Preparation of the Compounds of Examples 41




2-[(4-Chlorophenyl)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 41)
Starting from 2-(4-chlorophenyl)acetaldehyde 2-[(4-chlorophenyl)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was prepared in analogy to Example 23 following general reaction scheme 2.
Diastereomeric mixture of 2-[(4-chlorophenyl)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was separated by reverse phase HPLC and structure of major diastereomer was determined to be cis by NMR experiments.
cis-isomer (SC-130, SC-131): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.32 (s, 3H), 1.34-1.37 (1H), 1.41-1.45 (1H), 1.67-1.74 (1H), 1.92-2.00 (1H), 2.70-2.72 (2H), 3.40-3.46 (1H), 3.60-3.65 (1H), 3.81-3.86 (1H), 7.21-7.23 (2H), 7.28-7.30 (2H), 7.92-7.97 (1H), 8.00 (s, 1H), 8.13-8.16 (1H), 8.20-8.22 (1H).
Two enantiomers of this single diastereomer were separated by chiral prep HPLC using CHIRALPAK-IC column and Hexane/EtOH/DEA (90/10/0.1) as mobile phase to obtain two cis enantiomers SC-130 and SC-131.
SC-130: (0.21 g, off white solid, 1st eluted enantiomer).
SC-131 (0.21 g, off white solid, 2nd eluted enantiomer).
2-[3,4-Bis(methylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 42)
Step 1: 2-(4-bromo-3-fluorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
Starting from 4-bromo-3-fluorobenzaldehyde 2-(4-bromo-3-fluorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran was prepared in analogy to Example 23 following general reaction scheme 1.
Step 2: 2-[3,4-Bis(methylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
To a stirred solution of 2-(4-bromo-3-fluorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (6.0 g, 0.0124 mol, 1 eq) in DMSO (60 mL) was added sodiummethanesulfinate (1.52 g, 0.0149 mol, 1.2 eq) and L-proline sodium salt (0.34 g, 0.0024 mol, 0.2 eq). The reaction mixture was degassed for 10 min and then CuI (0.23 g, 0.00124 mol, 0.1 eq) was added and the reaction mixture was heated up to 90° C. for 16 h in a sealed tube. Then the reaction mass was diluted with H2O, extracted with EtOAc (2×150 mL), organic layer was washed with H2O (200 mL) and brine (150 mL), dried over anhydr. Na2SO4 and the solvent was evaporated under reduced pressure to get crude product which was further purified by CC to afford two set of compounds (one is mono sulfomethyl (SC-144) and other is disulfomethyl (SC132, SC-133) and both were cis as confirmed by NMR experiments.
cis-isomer (SC-132, SC-133): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.47-1.52 (4H), 1.87-1.89 (2H), 2.13-2.20 (1H), 3.46-3.48 (6H), 3.71-3.77 (1H), 4.10-4.15 (1H), 4.82-4.86 (1H), 7.92-8.00 (2H), 9.06 (s, 1H), 8.15-8.17 (1H), 8.21-8.23 (3H).
Two enantiomers of this single diastereomer were separated by chiral SFC using a OJ-H column to obtain two cis enantiomers SC-132 and SC-133.
SC-132: (1.30 g, off white solid, 1st eluted enantiomer).
SC-133: (1.35 g, off white solid, 2nd eluted enantiomer).
1-[4-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-phenyl]-1H-[1,2,4]triazole (Example 43)
Step 1: 2-(4-bromophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
Starting from 4-bromobenzaldehyde 2-(4-bromophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran was prepared in analogy to Example 23 following general reaction scheme 1.
Step 2: 1-(4-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)phenyl)-1H-1,2,4-triazole
To a stirred solution of 2-(4-bromophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.1 g, 2.16 mmol, 1 eq) in toluene (10 mL) was added 1H-[1,2,4]triazole (0.074 g, 1.079 mmol, 5 eq), K3PO4 (0.091 g, 0.432 mmol, 2 eq) and N,N-dimethylcyclohexadiamine (0.04 mL, 0.216 mmol, 1 eq). The reaction mixture was degassed for 10 min and then CuI (50 mg, 0.259 mmol, 1.2 eq) was added and the mixture was again degassed for 10 min. The reaction mixture was heated up to 150° C. for 72 h in a sealed tube. After completion of reaction (monitored by TLC), the reaction mass was diluted with H2O (20 mL), extracted with EtOAc (2×35 mL), organic layer was washed with brine (20 mL), dried over anhydr. Na2SO4, filtered and evaporated under reduced pressure to get crude product which was further purified by column chromatography to afford 1-(4-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)phenyl)-1H-1,2,4-triazole as a mixture of diastereiomers that were separated by reverse phase prep HPLC to afford cis diasterisomer as the major isomer (confirmed by NMR).
cis-isomer (SC-134, SC-135): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.47-1.51 (4H), 1.73-1.76 (1H), 1.86-1.93 (1H), 2.12-2.17 (1H), 3.69-3.75 (1H), 4.06-4.10 (1H), 4.61-4.64 (1H), 7.49-7.52 (2H), 7.82-7.85 (2H), 8.05 (s, 1H), 8.15-8.17 (1H), 8.20-8.23 (2H).
Two enantiomers of this single diastereomer were separated by chiral SFC using an IC column to obtain two cis enantiomers SC-134 and SC-135.
SC-134: (0.051 g, off white solid, 1st eluted enantiomer).
SC-135: (0.060 g, off white solid, 2nd eluted enantiomer).
2-Fluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile (Example 44)
Step 1: 2-(3-bromo-4-fluorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
Starting from 3-bromo-4-fluorobenzaldehyde 2-(3-bromo-4-fluorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran was prepared in analogy to Example 23 following general reaction scheme 1.
Step 2: 2-Fluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
To a stirred solution of 2-(3-bromo-4-fluorophenyl)-4-methyl-4-((3-(trifluoromethyl)-phenyl)sulfonyl)tetrahydro-2H-pyran (1.8 g, 3.74 mmol, 1 eq) in NMP (15 mL) was added CuCN (0.402 g, 4.49 mmol, 1.2 eq) and the mixture was continued to stir for 30 h. After completion of reaction (monitored by TLC), reaction mass was quenched with H2O, extracted with ethyl acetate (2×50 mL), organic layer was washed with H2O (20 mL), brine (20 mL), dried over anhydr. Na2SO4 and the solvent was evaporated under reduced pressure to get crude product which was further purified by column chromatography to afford 2-fluoro-5-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)benzonitrile (0.90 g, 56%) as off white solid.
The diastereomeric mixture was separated by reverse phase HPLC and major diastereomer was considered to be cis.
cis-isomer (SC-136, SC-137): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.46-1.49 (4H), 1.76-1.88 (2H), 2.10-2.14 (1H), 3.67-3.73 (1H), 4.04-4.09 (1H), 4.60-4.63 (1H), 7.49-7.53 (1H), 7.74-7.78 (1H), 7.92-7.96 (1H), 8.05 (s, 1H), 8.15-8.17 (1H), 8.20-8.23 (1H).
Two enantiomers of this single diastereomer were separated by chiral prep HPLC using OD-H column and Hexane/EtOH/DEA (90/10/0.1) as mobile phase to obtain two cis enantiomers SC-136 and SC-137.
SC-136: (0.102 g, off white solid, 1st eluted enantiomer).
SC-137: (0.069 g, off white solid, 2nd eluted enantiomer).
2-Fluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzamide (Example 45)
To a stirred solution of cis-2-fluoro-5-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)benzonitrile (SC-136, SC-137) (0.9 g, 2.105 mmol, 1 eq) in DMSO (15 mL) was added K2CO3 (0.116 g, 0.842 mmol, 0.4 eq) and the reaction mixture was cooled to 0° C. Then H2O2 (40%) (0.107 g, 3.158 mmol, 1.5 eq) was added drop wise and reaction mixture was stirred for 2 h at RT. After completion of reaction (monitored by TLC), reaction mass was quenched with H2O, extracted with EtOAc (2×50 mL), organic layer was washed with H2O (20 mL), brine (20 ml), dried over anhydr. Na2SO4 and evaporated under reduced pressure to get crude product which was further purified by CC to afford cis-2-fluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzamide (0.450 g, 48%) as white solid.
cis-isomer (SC-138, SC-139): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.45-1.50 (4H), 1.70-1.73 (1H), 1.84-1.90 (1H), 2.10-2.18 (1H), 3.66-3.72 (1H), 4.03-4.08 (1H), 4.57-4.60 (1H), 7.21-7.26 (1H), 7.44-7.48 (1H), 7.61-7.69 (3H), 7.92-7.96 (1H), 8.04 (s, 1H), 8.14-8.17 (1H), 8.20-8.22 (1H).
Two enantiomers of this single diastereomer were separated by chiral prep HPLC using CHIRALPAK IA column and EtOH/DEA (100/0.1) as mobile phase to obtain two cis enantiomers SC-138 and SC-139.
SC-138: (0.174 g, off white solid, 1st eluted enantiomer).
SC-139: (0.177 g, off white solid, 2nd eluted enantiomer).
2-(4-Chlorophenyl)-2-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 46)
Enantiomer separation of trans diastereomer (SC-117) by chiral Prep HPLC gave 1st eluting enantiomer as SC-140 (0.2117 g) and 2nd eluting enantiomer as SC-141 (0.083 g). Both the compounds are off-white solids.
4-[[3-Fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran (Example 47)
Step 1: 2-(4-bromophenyl)-4-((3-fluoro-5-(trifluoromethyl)phenyl)sulfonyl)-4-methyltetrahydro-2H-pyran
Starting from 4-bromobenzaldehyde, 2-(4-bromophenyl)-4-((3-fluoro-5-(trifluoromethyl)phenyl)sulfonyl)-4-methyltetrahydro-2H-pyran was prepared in analogy to Example 23 following general reaction scheme 1.
Step 2: 4-((3-fluoro-5-(trifluoromethyl)phenyl)sulfonyl)-4-methyl-2-(4-(methylthio)phenyl)tetrahydro-2H-pyran
A suspension of 2-(4-bromophenyl)-4-((3-fluoro-5-(trifluoromethyl)phenyl)sulfonyl)-4-methyltetrahydro-2H-pyran (0.9 g. 18.69 mmol, 1 eq), dimethyl disulfide (0.105 g, 11.21 mmol, 0.6 eq) and zinc dust (0.122 g, 1.869 mmol, 1 eq) in DMF (10 mL) was deoxygenated well by Ar gas for 10 min. Palladium acetate (0.0125 gm, 0.03987 mmol, 0.03 eq) and BINAP (0.037 gm, 0.0431 mmol, 0.0607 eq) were then added to the reaction mixture and again deoxygenated by argon for 10 min. The reaction mixture then stirred for 16 h at 110° C. The reaction mixture cooled to RT and then filtered through celite bed. The filtrate was diluted with EtOAc (50 mL) and washed by water (5×10 mL) and brine (10 mL). The organic layer dried over anhydr. Na2SO4, concentrated under reduced pressure to get crude product which was purified by CC to afford 4-((3-fluoro-5-(trifluoromethyl)phenyl)sulfonyl)-4-methyl-2-(4-(methylthio)phenyl)tetrahydro-2H-pyran (0.67 g, 75%) as off white solid.
Step 3: 4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran
To a stirred solution of 4-((3-fluoro-5-(trifluoromethyl)phenyl)sulfonyl)-4-methyl-2-(4-(methylthio)phenyl)tetrahydro-2H-pyran (1.0 g, 2.22 mmol, 1 eq) in THF:H2O (3:1) oxone (5.47 g, 8.9 mmol, 4 eq) was added and reaction mixture was stirred at RT for 2 h. After completion of the reaction the mixture was diluted with water and extracted with EtOAc. The combined organic layer was washed with water, sat. brine and dried over anhydr. Na2SO4 and the solvent was evaporated under reduced pressure to get crude product which was further purified by CC to afford 4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran (0.7 g, 70%) as a white solid and as a single diasteroisomer which was confirmed to be cis by NOE experiments.
cis-isomer (SC-142, SC-143): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.49-1.54 (4H), 1.80-1.92 (2H), 2.13-2.21 (1H), 3.21 (s, 3H), 3.70-3.76 (1H), 4.07-4.11 (1H), 4.68-4.71 (1H), 7.60-7.62 (2H), 7.89-7.92 (2H), 8.08-8.10 (1H), 8.25-8.27 (1H).
Two enantiomers of this single diastereomer were separated by chiral prep HPLC using CHIRALPAK IA column and EtOH/DCM/DEA (90/10/0.1) as mobile phase to obtain two cis enantiomers SC-142 and SC-143.
SC-142: (0.081 g, off white solid, 1st eluted enantiomer).
SC-143: (0.06 g, off white solid, 2nd eluted enantiomer).
2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 48)
To a stirred solution of 2-(4-bromo-3-fluorophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (6.0 g, 0.0124 mol, 1 eq) in DMSO (60 mL) was added sodiummethanesulfinate (1.52 g, 0.0149 mol, 1.2 eq) and L-proline sodium salt (0.34 g, 0.0024 mol, 0.2 eq). The reaction mixture was degassed for 10 min and then CuI (0.23 g, 0.00124 mol, 0.1 eq) was added and the reaction mixture was heated up to 90° C. for 16 h in a sealed tube. Then the reaction mass was diluted with H2O, extracted with EtOAc (2×150 mL), organic layer was washed with H2O (200 mL) and brine (150 mL), dried over anhydr. Na2SO4 and the solvent was evaporated under reduced pressure to get crude product which was further purified by CC to afford 2 set of compounds (one is mono sulfomethyl (SC-144) and other is disulfomethyl (SC132, SC-133) and both were cis as confirmed by NMR experiments.
cis-isomer (SC-144): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.51-1.56 (4H), 1.77-1.81 (1H), 2.03-2.10 (1H), 2.30-2.39 (1H), 3.21 (s, 3H), 3.66-3.72 (1H), 4.16-4.21 (1H), 4.48-4.51 (1H), 7.21-7.27 (2H), 7.72-7.76 (1H), 7.90-7.96 (2H), 8.02-8.04 (1H), 8.11 (s, 1H).
2-[(2-Fluoro-4-methylsulfonyl-phenoxy)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 49)
To a stirred solution of (4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)methyl methanesulfonate (0.3 g, 0.88 mmol, 1 eq) in THF (10 mL) was added 2-fluoro-4-methanesulfonyl-phenol (0.168 g, 0.88 mmol, 1 eq), PPh3 (0.345 g, 1.32 mmol, 1.5 eq) and the mixture was heated to reflux. Then DEAD (0.208 mL, 1.32 mmol, 1.5 eq) was added and heating was continued for 16 h. Then the reaction mass was cooled to RT and the mixture was diluted with H2O and extracted with EtOAc (2×20 mL), washed with brine (15 mL), dried over Na2SO4 and concentrated. The crude product was purified by reverse phase prep. HPLC to get pure 2-[(2-fluoro-4-methylsulfonyl-phenoxy)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran as a single diasteroisomer (cis).
cis-isomer (SC-148, SC-149): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.40-1.44 (4H), 1.60-1.64 (1H), 1.86-1.93 (1H), 1.97-2.03 (1H), 3.21 (s, 3H), 3.55-3.61 (1H), 3.89-3.94 (2H), 4.14-4.23 (2H), 7.39-7.44 (1H), 7.68-7.71 (1H), 7.75-7.79 (1H), 7.95-7.99 (1H), 8.04 (s, 1H), 8.16-8.18 (1H), 8.23-8.25 (1H).
Two enantiomers of cis isomer were separated by chiral HPLC, using chiral pack-IA column and Ethanol/DEA: (100/0.1) as mobile phase to obtain two desired cis enantiomers (SC-148, SC-149).
SC-148: (0.075 g, 1st eluted enantiomer).
SC-149: (0.08 g, 2nd eluted enantiomer).
3-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-pyridine (Example 50)
Step 1: (2-fluoro-4-nitrophenyl)(methyl)sulfane
To a stirred solution of 1,2-difluoro-4-nitro-benzene (5 g, 31 mmol, 1 eq) was added sodium methane thiolate (2 g, 29 mmol, 0.95 eq) and the mixture was stirred for 16 h at RT. Then the reaction mass poured into H2O and extracted with EtOAc (2×40 mL), washed with brine (20 mL), dried over Na2SO4 and concentrated. The crude product was purified by flash column chromatography to afford (2-fluoro-4-nitrophenyl)(methyl)sulfane (1.2 g, 20%) as an off white solid.
Step 2: 3-fluoro-4-(methylthio)aniline
To a stirred solution of (2-fluoro-4-nitrophenyl)(methyl)sulfane (0.8 g, 4.27 mmol, 1 eq) in AcOH/H2O (3:1) (18 mL) was added Fe (0.04 g, 0.716 mmol, 0.17 eq) and the mixture was stirred for 2 h at the RT. Then the reaction mass was concentrated and basified with sat. NaHCO3 solution and extracted with EtOAc (2×30 mL), washed with brine (10 mL), dried over Na2SO4 and concentrated. The crude product was purified by flash column chromatography to afford 3-fluoro-4-(methylthio)aniline (0.36 g, 54%) as yellow gum.
Step 3: 3-fluoro-4-(methylthio)phenol
To a stirred solution of 3-fluoro-4-(methylthio)aniline (0.25 g, 1.59 mmol, 1 eq) in THF/H2O (1:1) (2 mL) was added conc. H2SO4 (1 mL) slowly at 0° C. followed by NaNO2 (0.219 g, 3.18 mmol, 2 eq) dissolved in H2O and stirred for 2 h. Then this mixture was added to a mixture of Cu(NO3)2 and Cu2O in H2O slowly and stirred for 15 min. Then the mixture was extracted with EtOAc (2×20 mL), washed with brine (10 mL), dried over Na2SO4 and concentrated. The crude product was purified by flash column chromatography to afford 3-fluoro-4-(methylthio)phenol (0.07 g, 25%) as yellow gum.
Step 4: 3-fluoro-4-(methylsulfonyl)phenol
To a stirred solution of 3-fluoro-4-methylsulfanyl-phenol (0.07 g, 0.443 mmol, 1 eq) in THF/H2O (2:1) (4.3 mL) was added oxone (0.279 g, 0.908 mmol, 2.05 eq) and the mixture was stirred for 1 h at the RT. Then the mixture was poured into sat. NaHCO3 solution and extracted with EtOAc (2×15 mL), washed with brine (10 mL), dried over Na2SO4 and concentrated. The crude product was purified by flash column chromatography to afford 3-fluoro-4-(methylsulfonyl)phenol (0.05 g) as yellow gum.
Step 5: 2-((3-fluoro-4-(methylsulfonyl)phenoxy)methyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
To a solution of (4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)methyl methanesulfonate (1.1 g, 2.6 mmol, 1 eq) in DMF (15 mL) was added 3-fluoro-4-methylsulfonyl-phenol (0.552 g, 2.9 mmol, 1.1 eq), Cs2CO3 (2.1 g, 6.9 mmol, 2.5 eq) and the mixture was heated up to 80° C. for 48 h. Then the reaction mass was cooled to RT and diluted with H2O (15 mL), extracted with EtOAc (2×30 mL), washed with H2O (15 mL), brine (15 mL), dried over Na2SO4 and concentrated. The crude product was purified by reverse phase prep. HPLC to give pure 2-((3-fluoro-4-(methylsulfonyl)phenoxy)methyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.35 g) as a single diastereoisomer (cis).
cis-isomer (SC-150, SC-151): 1H NMR (400 MHz, DMSO-d6, δ ppm): 1.38-1.42 (4H), 1.60-1.63 (1H), 1.84-1.90 (1H), 1.99-2.02 (1H), 3.23 (s, 3H), 3.51-3.59 (1H), 3.87-3.93 (2H), 4.07-4.16 (2H), 6.97-7.00 (1H), 7.12-7.16 (1H), 7.71-7.75 (1H), 7.95-7.99 (1H), 8.04 (s, 3H), 8.16-8.18 (1H), 8.22-8-25 (1H).
Two enantiomers of cis racemic were separated by chiral HPLC, using chiral pack-IA column and EtOH/DEA: (100/0.1) as mobile phase to obtain two desired cis enantiomers (SC-150 and SC-51).
SC-150: (0.09 g, 1st eluted enantiomer).
SC-151: (0.095 g, 2nd eluted enantiomer).
The following example compounds (Examples 51 to 57, 59, 61 to 64, 66, 67 and 73 to 75) were prepared in analogy to 2-(4-fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 17):
2-[[2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine (Example 51)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.46-8.49 (1H), 8.36-8.37 (1H), 8.32-8.33 (1H), 7.84-7.86 (1H), 7.42-7.46 (2H), 4.71-4.73 (1H), 4.08-4.11 (1H), 3.72-3.78 (1H), 3.32 (3H), 2.12-2.17 (1H), 1.92-1.97 (2H), 1.58-1.62 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-[[2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine
[Cis-rac] 2-[[2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine was subjected to preparative chiral-SFC (Chiralpak-OJ-H column, 0.5% DEA in MeOH, 15%)) to give [cis-EN1] SC-245 and [cis-EN2] SC-246.
[cis-EN1] SC-245—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 30%, Ret. Time 3.19; ee>95%
[cis-EN2] SC-246—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 30%, Ret. Time 3.72; ee>95%
2-(2-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 52)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.16-8.18 (1H), 8.05 (1H), 7.98-7.99 (1H), 7.93-7.96 (1H), 7.88-7.90 (1H), 7.73-7.75 (1H), 4.89-4.91 (1H), 4.13-4.16 (1H), 3.79-3.83 (1H), 3.23 (3H), 2.18-2.23 (1H), 1.82-1.91 (2H), 1.48-1.52 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(2-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(2-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Lux Cellulose-2 column, MeOH, 25%)) to give [cis-EN1] SC-247 and [cis-EN2] SC-248.
[cis-EN1] SC-247—analytical SFC: Lux Cellulose-2 (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 30%, Ret. Time 3.51; ee>95%
[cis-EN2] SC-248—analytical SFC: Chiralpal-AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 30%, Ret. Time 4.28; ee>95%
4-Methyl-2-[3-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 53)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (2H), 8.16-8.18 (1H), 8.05 (1H), 8.02-8.04 (1H), 7.89-7.96 (2H), 4.80-4.86 (1H), 4.10-4.15 (1H), 3.71-3.76 (1H), 2.14-2.20 (1H), 1.87-1.90 (2H), 1.47-1.53 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-[3-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 4-Methyl-2-[3-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak AS-H column, iPrOH, 25%)) to give [cis-EN1] SC-249 and [cis-EN2] SC-250.
[cis-EN1] SC-249—analytical SFC: Chiralpak AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 10%, Ret. Time 3.58; ee>95%
[cis-EN2] SC-250—analytical SFC: Chiralpal-AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 10%, Ret. Time 4.38; ee>95%
3-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile (Example 54)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.30-8.31 (1H), 8.21-8.23 (2H), 8.15-8.17 (1H), 8.04 (1H), 7.93-7.96 (2H), 5.28-5.31 (1H), 4.09-4.12 (1H), 3.84-3.88 (1H), 3.3-3.5 (3H), 2.17-2.22 (1H), 1.97-2.00 (1H), 1.79-1.86 (1H), 1.50-1.52 (1H), 1.47 (3H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 3-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
[Cis-rac] 3-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile was subjected to preparative chiral-SFC (Chiralpak AS-H column, MeOH, 35%)) to give [cis-EN1] SC-251 and [cis-EN2] SC-252.
[cis-EN1] SC-251—analytical SFC: Chiralpak AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 2.12; ee>95%
[cis-EN2] SC-252—analytical SFC: Chiralpak-AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 3.48; ee>95%
4-Methyl-2-(2-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 55)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.16-8.18 (1H), 8.06 (1H), 7.93-7.96 (1H), 7.76-7.77 (1H), 7.73 (1H), 7.61-7.62 (1H), 4.81-4.83 (1H), 4.07-4.10 (1H), 3.75-3.79 (1H), 3.19 (3H), 2.34 (3H), 2.14-2.20 (1H), 1.84-1.88 (1H), 1.70-1.73 (1H), 1.54 (3H), 1.48-1.51 (1H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-(2-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 4-Methyl-2-(2-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralcel OX-H column, MeOH, 40%)) to give [cis-EN1] SC-253 and [cis-EN2] SC-254.
[cis-EN1] SC-253—analytical SFC: Chiralcel OX-H (250×4.6 mm 5μ), 4 g/min, RT, MeOH, 40%, Ret. Time 2.19; ee>95%
[cis-EN2] SC-254—analytical SFC: Chiralcel OX-H (250×4.6 mm 5μ), 4 g/min, RT, MeOH, 40%, Ret. Time 4.28; ee>95%
4-Methyl-2-[4-methylsulfonyl-2-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 56)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.28-8.30 (1H), 8.22-8.23 (1H), 8.16-8.18 (2H), 8.04-9.06 (2H), 7.93-7.96 (1H), 4.87-4.88 (1H), 4.11-4.14 (1H), 3.79-3.84 (1H), 3.33 (3H), 2.20-2.25 (1H), 1.95-1.99 (1H), 1.70-1.73 (1H), 1.50-1.53 (1H), 1.47 (3H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methyl-2-[4-methylsulfonyl-2-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 4-Methyl-2-[4-methylsulfonyl-2-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak AD-H column, MeOH, 12%)) to give [cis-EN1] SC-255 and [cis-EN2] SC-256.
[cis-EN1] SC-255—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 15%, Ret. Time 1.98; ee>95%
[cis-EN2] SC-256—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 15%, Ret. Time 2.65; ee>95%
3-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile (Example 57)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.34-8.35 (1H), 8.17-8.22 (4H), 8.06 (1H), 7.94-7.96 (1H), 4.76-4.78 (1H), 4.12-4.15 (1H), 3.72-3.77 (1H), 3.32 (3H), 2.15-2.20 (1H), 1.88-1.94 (2H), 1.49-1.52 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 3-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
[Cis-rac] 3-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile was subjected to preparative chiral-SFC (Chiralcel OJ-H column, MeOH, 40%)) to give [cis-EN1] SC-257 and [cis-EN2] SC-258.
[cis-EN1] SC-257—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 25%, Ret. Time 2.69; ee>95%
[cis-EN2] SC-258—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 25%, Ret. Time 3.41; ee>95%
2-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile (Example 59)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.23 (1H), 8.16-8.19 (2H), 8.11-8.12 (1H), 8.05 (1H), 7.94-7.96 (1H), 7.89-7.90 (1H), 4.80-4.82 (1H), 4.11-4.15 (1H), 3.72-3.77 (1H), 2.14-2.20 (1H), 1.84-1.91 (1H), 1.48-1.56 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
[Cis-rac] 2-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile was subjected to preparative chiral-SFC (Chiralpal-AD-H column, MeOH, 25%)) to give [cis-EN1] SC-261 and [cis-EN2] SC-262.
[cis-EN1] SC-261—analytical SFC: Chiralpal-AD-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 25%, Ret. Time 3.54; ee>95%
[cis-EN2] SC-262—analytical SFC: Chiralpal-AD-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 25%, Ret. Time 4.27; ee>95%
2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran (Example 61)




1H-NMR (600 MHz, [d6]-DMSO): δ =7.88-7.90 (1H), 7.83-7.88 (3H), 7.76 (1H), 7.43-7.48 (2H), 4.68-4.71 (1H), 4.08-4.11 (1H), 3.71-3.76 (1H), 3.32 (3H), 2.10-2.15 (1H), 1.77-1.85 (2H), 1.49-1.51 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak OJ-H column, 0.5% DEA in MeOH, 15%)) to give [cis-EN1] SC-265 and [cis-EN2] SC-266.
[cis-EN1] SC-265—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 30%, Ret. Time 1.97; ee>95%
[cis-EN2] SC-266—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 30%, Ret. Time 2.45; ee 93%
2-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile (Example 62)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.23 (1H), 8.16-8.18 (1H), 8.12-8.14 (2H), 8.06 (1H), 7.93-7.97 (1H), 4.75-4.77 (1H), 4.11-4.14 (1H), 3.72-3.77 (1H), 2.14-2.18 (1H), 1.83-1.92 (2H), 1.49-1.52 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
[Cis-rac] 2-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile was subjected to preparative chiral-SFC (Chiralpak AD-H column, MeOH, 30%)) to give [cis-EN1] SC-267 and [cis-EN2] SC-268.
[cis-EN1] SC-267—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 30%, Ret. Time 3.98; ee>95%
[cis-EN2] SC-268—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 30%, Ret. Time 5.33; ee>95%
4-[[3-(Difluoro-methyl)-phenyl]sulfonyl]-2-(3-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran (Example 63)




1H-NMR (600 MHz, [d6]-DMSO): δ =7.99-8.03 (3H), 7.84-7.86 (2H), 7.43-7.48 (2H), 7.10-7.29 (1H), 4.67-4.70 (1H), 4.08-4.11 (1H), 3.70-3.75 (1H), 3.31 (3H), 2.10-2.15 (1H), 1.80-1.85 (1H), 1.47-1.50 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-[[3-(Difluoro-methyl)-phenyl]sulfonyl]-2-(3-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
[Cis-rac] 4-[[3-(Difluoro-methyl)-phenyl]sulfonyl]-2-(3-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralcel OJ-H column, MeOH, 30%)) to give [cis-EN1] SC-269 and [cis-EN2] SC-270.
[cis-EN1] SC-269—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 25%, Ret. Time 3.88; ee>95%
[cis-EN2] SC-270—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 25%, Ret. Time 4.71; ee>95%
2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran (Example 64)




1H-NMR (600 MHz, [d6]-DMSO): δ =7.83-7.86 (1H), 7.68-7.69 (1H), 7.59-7.64 (3H), 7.42-7.46 (2H), 4.67-4.69 (1H), 4.06-4.09 (1H), 3.68-3.72 (1H), 3.31 (3H), 3.00-3.06 (1H), 2.07-2.12 (1H), 1.76-1.82 (2H), 1.43-1.47 (4H), 1.21-1.24 (6H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran
[Cis-rac] 2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralcel OJ-H column, MeOH, 30%)) to give [cis-EN1] SC-271 and [cis-EN2] SC-272.
[cis-EN1] SC-271—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 30%, Ret. Time 2.46; ee>95%
[cis-EN2] SC-272—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 30%, Ret. Time 2.94; ee>95%
5-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile (Example 66)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.39-8.40 (1H), 8.18-8.25 (3H), 8.08 (1H), 7.94-7.96 (1H), 7.88-7.89 (1H), 4.93-4.96 (1H), 4.12-4.15 (1H), 3.89-3.84 (1H), 3.31 (3H), 2.14-2.20 (1H), 1.95-1.99 (1H), 1.88-1.91 (1H), 1.52-1.55 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 5-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
[Cis-rac] 5-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile was subjected to preparative chiral-SFC (Chiralpak AD-H column, MeOH, 25%)) to give [cis-EN1] SC-275 and [cis-EN2] SC-276.
[cis-EN1] SC-275—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 25%, Ret. Time 3.29; ee>95%
[cis-EN2] SC-276—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 25%, Ret. Time 4.03; ee>95%
2-(2-Cyclopropyl-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 67)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.22-8.23 (1H), 8.17-8.18 (1H), 8.06 (1H), 7.94-7.97 (1H), 7.87-7.89 (1H), 7.74-7.75 (1H), 5.09-5.11 (1H), 4.15-4.18 (1H), 3.80-3.84 (1H), 3.18 (3H), 2.22-2.27 (1H), 1.97-1.99 (1H), 1.85-1.93 (2H), 1.52-1.54 (4H), 0.89-0.96 (2H), 0.81-0.86 (1H), 0.50-0.54 (1H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(2-Cyclopropyl-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(2-Cyclopropyl-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak AD-H column, MeOH, 30%)) to give [cis-EN1] SC-277 and [cis-EN2] SC-278.
[cis-EN1] SC-277—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 30%, Ret. Time 1.98; ee>95%
[cis-EN2] SC-278—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 30%, Ret. Time 2.73; ee>95%
2-[[4-Methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine (Example 73)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.47-8.49 (1H), 8.37-8.38 (1H), 8.32-8.33 (1H), 7.90-7.92 (2H), 7.59-7.61 (2H), 4.71-4.73 (1H), 4.08-4.11 (1H), 3.74-3.79 (1H), 3.21 (3H), 2.15-2.20 (1H), 1.96-2.00 (1H), 1.88-1.91 (1H), 1.60-1.63 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-[[4-Methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine
[Cis-rac] 2-[[4-Methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine was subjected to preparative chiral-SFC (Chiralpak OJ-H column, 0.5% DEA in MeOH, 15%)) to give [cis-EN1] SC-292 and [cis-EN2] SC-293.
[cis-EN1] SC-292—analytical SFC: Chiralcel-OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 25%, Ret. Time 2.74; ee>95%
[cis-EN2] SC-293—analytical SFC: Chiralcel-OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 25%, Ret. Time 3.56; ee>95%
2-(2-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 74)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.22-8.23 (1H), 8.17-8.19 (1H), 8.07 (1H), 7.98-8.00 (1H), 7.94-7.97 (2H), 7.48-7.52 (1H), 4.10-4.13 (1H), 3.75-3.80 (1H), 3.24 (3H), 2.17-2.22 (1H), 2.00-2.04 (1H), 1.74-1.77 (1H), 1.49-1.51 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(2-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(2-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak AD-H column, MeOH, 25%)) to give [cis-EN1] SC-294 and [cis-EN2] SC-295.
[cis-EN1] SC-294—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 2.32; ee>95%
[cis-EN2] SC-295—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 2.91; ee>95%
2-(3-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 75)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.17-8.18 (1H), 8.06 (1H), 7.94-7.96 (1H), 7.78 (H), 7.70-7.72 (1H) 7.56-7.58 (1H), 4.71-4.73 (1H), 4.09-4.13 (1H), 3.71-3.75 (1H), 3.27 (3H), 2.14-2.19 (1H), 1.87-1.89 (1H), 1.48-1.51 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(3-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(3-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak AS-H column, MeOH, 25%)) to give [cis-EN1] SC-296 and [cis-EN2] SC-297.
[cis-EN1] SC-297—analytical SFC: Chiralpak-AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 2.42; ee>95%
[cis-EN2] SC-296—analytical SFC: Chiralpak-AS-H (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 3.02; ee>95%
The following example compounds (Example 58, 60 and 68) were prepared in analogy to 2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 38):
2,2-Difluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-1,3-benzodioxole (Example 58)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.21 (1H), 8.15-8.17 (1H), 8.04 (1H), 7.93-7.96 (1H), 7.34-7.36 (2H), 7.17-7.19 (2H), 4.57-4.59 (1H), 4.04-4.08 (1H), 3.68-3.72 (1H), 2.11-2.16 (1H), 1.86-1.90 (1H), 1.71-1.73 (1H), 1.46-1.49 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methylsulfonyl-2-[4-methyl-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
[Cis-rac] 4-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile was subjected to preparative chiral-SFC (Chiralpak-OJ-H column, iPrOH, 10%)) to give [cis-EN1] SC-259 and [cis-EN2] SC-260.
[cis-EN1] SC-259—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, iPrOH, 10%, Ret. Time 2.59; ee>95%
[cis-EN2] SC-260—analytical SFC: Chiralcel OJ-H (250×4.6 mm 5μ), 3 g/min, RT, iPrOH, 10%, Ret. Time 3.08; ee>95%
5-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-2,3-dihydro-benzofuran (Example 60)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.15-8.17 (1H), 8.04 (1H), 7.94-7.96 (1H), 7.18 (1H), 7.00-7.02 (1H), 6.69-6.70 (1H), 4.50-4.52 (2H), 4.43-4.46 (1H), 4.00-4.03 (1H), 3.64-3.69 (1H), 3.11-3.18 (2H), 2.09-2.14 (1H), 1.90-1.95 (1H), 1.59-1.62 (1H), 1.44-1.48 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 5-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-2,3-dihydro-benzofuran
[Cis-rac] 5-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-2,3-dihydro-benzofuran was subjected to preparative chiral-SFC (Chiralpak IC column, MeOH, 15%)) to give [cis-EN1] SC-263 and [cis-EN2] SC-264.
[cis-EN1] SC-263—analytical SFC: Chiralpak IC (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 3.38; ee>95%
[cis-EN2] SC-264—analytical SFC: Chiralpak IC (250×4.6 mm 5μ), 3 g/min, RT, MeOH, 20%, Ret. Time 4.13; ee>95%
2-Methyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole (Example 68)




1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.16-8.17 (1H), 8.05 (1H), 7.93-7.96 (1H), 7.58-7.61 (2H), 7.31-7.32 (1H), 4.65-4.68 (1H), 4.07-4.10 (1H), 3.71-3.75 (1H), 2.60 (3H), 2.14-2.19 (1H), 1.92-1.96 (1H), 1.72-1.75 (1H), 1.49-1.53 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-Methyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole
[Cis-rac] 2-Methyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole was subjected to preparative chiral-SFC (Chiralpak AS-H column, MeOH, 33%)) to give [cis-EN1] SC-279 and [cis-EN2] SC-280.
[cis-EN1] SC-279—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, EtOH, 20%, Ret. Time 7.00; ee>95%
[cis-EN2] SC-280—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, EtOH, 20%, Ret. Time 8.69; ee>95%
4-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile (Example 65)




Step 1: 2-(2,5-dibromophenyl)tetrahydro-2H-pyran-4-ol
2,5-di bromobenzaldehyde (30 g, 114.5 mmol) was dissolved in DCE (600 mL) and cooled in an ice bath. TFA (240 mL) followed by 3-buten-1-ol (12.36 g, 171.7 mmol) were added and the mixture stirred at RT for 37 h. The mixture was diluted with ice water (500 mL), basified with 6 M NaOH (aq) and extracted with DCM (200 mL×5). Organic layer was separated and washed with brine (500 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude. The crude product was dissolved in MeOH (200 mL) and LiOH.H2O (16.7 g, 274 mmol) was added. The reaction was stirred at RT for 16 h. MeOH was concentrated under reduced pressure and the residue was diluted with DCM (500 mL) and washed with water (300 mL), brine (200 mL), dried (Na2SO4) and concentrated in vacuo to get crude. The crude compound was purified by column chromatography (silica gel, 0-20% EtOAc in PE) to obtain 2-(2,5-di-bromophenyl)tetrahydro-2H-pyran-4-ol (25 g, 65%) as an oil.
Step 2: 2-(2,5-dibromophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
Methanesulphonyl chloride (10.3 g, 90.63 mmol) was added to a solution of 2-(2,5-dibromophenyl)tetrahydro-2H-pyran-4-ol (25.0 g, 75.52 mol) and DIPEA (27 mL, 151 mmol) in DCM (250 mL) at 0° C.; allowed to warm to RT and stirred for 7 h. The mixture was diluted with DCM (100 mL) and washed sequentially with sat. NaHCO3 solution (200 mL), water (200 mL), brine (150 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude 2-(2,5-dibromophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (32 g crude) as a thick brown oil. This was taken to the next step without further purification.
Step 3: 2-(2,5-dibromophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
3-Trifluoromethyl thiophenol (13.9 g, 78.23 mmol) was added to a suspension of 2-(2,5-dibromophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (16 g crude, 39.1 mmol) and K2CO3 (10.8 g, 78.23 mmol) in DMF (160 mL), heated at 55° C. for 9 h and then stirred at RT for 16 h. After completion of reaction, the mixture was diluted with water (25 0 mL) and extracted with EtOAc (250 mL×3). The organic extract was washed with water (300 mL), brine (200 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-10% EtOAc in PE) to obtain 2-(2,5-dibromophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (13.5 g, 70%) as pale yellow thick liquid.
Step 4: 2-(2,5-dibromophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
2-(2,5-dibromophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (13 g, 26.42 mmol) was dissolved in MeOH (390 mL) and a solution of OXONE (49 g, 79.26 mmol) in Water (325 mL) was added. The total reaction mass was stirred at RT for 16 h. MeOH was concentrated in vacuo; the residue was diluted with water (300 mL) and extracted with EtOAc (3×200 mL). The combined organic extract was washed with brine (200 mL), dried (Na2SO4) and concentrated to get crude. The crude compound was purified by CC (silica gel, 0-20% EtOAc in PE) to obtain 2-(2,5-dibromophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (11 g, 79%) as a solid.
Step 5: 2-(2,5-dibromophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
A solution of 2-(2,5-dibromophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (11 g, 20.99 mmol) in THF (110 mL) was cooled to −78° C. and KOt-Bu (1 M solution in THF; 42 mL, 42 mmol) was added drop-wise and stirred for 30 min at −78° C. CH3I (2.5 mL, 42 mmol) was added and the resulting mixture was warmed to RT and stirred for 16 h. The reaction mass was diluted with EtOAc (200 mL) and washed with water (100 mL) and brine (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel, 0-10% EtOAc in PE) to obtain 2-(2,5-dibromophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (5 g, 44.6%) as off white solid.
Step 6: 4-bromo-2-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)benzonitrile
CuCN (1 g, 11.111 mol) was added to a solution of 2-(2,5-dibromophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (5 g, 9.25 mmol) in DMF (50 mL) and stirred for 17 h at 120° C. The RM was cooled to RT and filtered, cake was washed with EtOAc (100 mL) and washed with water (100 mL) and brine (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by column chromatography (silica gel, 0-15% EtOAc in PE) to obtain 4-bromo-2-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)benzonitrile (1.6 g, 35%) as a pale yellow solid.
Step 7: 2-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)-4-(methylthio)benzonitrile
A solution of 4-bromo-2-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)benzonitrile (2 g, 4.10 mmol) and DIPEA (2.3 mL, 12.32 mmol) in toluene (20 mL) was degassed for 10 min, added Xantphos (165 mg, 0.02 mmol) followed by Pd2(dba)3 (0.263 g, 0.02 mmol) and degassed again for 10 min. Sodium thiomethoxide (344 mg, 4.92 mmol) was then added and further degassed for 5 min. The resulting mixture was heated at 120° C. for 16 h under argon. Reaction mass was filtered through celite and the filtrate concentrated to yield crude product. The crude product was purified by CC (silica gel 0-20% EtOAc in pet-ether) to obtain 2-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)-4-(methylthio)benzonitrile (1.2 g, 64%) as pale yellow solid.
Step 8: 2-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)-4-(methylsulfonyl)benzonitrile
2-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)-4-(methylthio)benzonitrile (2 g, 4.39 mmol) dissolved in MeOH (60 mL) and a solution of OXONE (8 g, 13.18 mmol) in Water (50 mL) was added. The total reaction mass was stirred at RT for 16 h. Methanol was concentrated in vacuo; the residue was diluted with water (200 mL) and extracted with DCM (3×50 mL). The combined organic extract was washed with brine (200 mL), dried (Na2SO4) and concentrated to get crude. The crude compound was purified by column chromatography (silica gel, 0-35% EtOAc in PE) to obtain 2-(4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)-4-(methylsulfonyl)benzonitrile (1.2 g, 57%) as off white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.19-8.23 (2H), 8.13-8.15 (1H), 8.05-8.08 (3H), 7.94-7.97 (1H), 4.94-4.97 (1H), 4.13-4.17 (1H), 3.80-3.84 (1H), 3.32 (3H), 2.18-2.23 (1H), 2.03-2.08 (1H), 1.89-1.91 (1H), 1.52-1.54 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 4-Methylsulfonyl-2-[4-methyl-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile
[Cis-rac] 4-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile was subjected to preparative chiral-SFC (Chiralpak AS-H column, MeOH, 33%)) to give [cis-EN1] SC-273 and [cis-EN2] SC-274.
[cis-EN1] SC-273—analytical SFC: Chiralpak-AS-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 15%, Ret. Time 3.00; ee>95%
[cis-EN2] SC-274—analytical SFC: Chiralpak-AS-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 15%, Ret. Time 3.62; ee>95%
2-[2-Fluoro-4-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 69)




Sodium metaperiodate (0.95 g, 4.46 mmol) was added to a stirred solution of 2-(2-fluoro-4-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1 g, 2.23 mmol) in MeOH (100 mL), Water (20 mL) and stirred for 24 h at RT. The reaction mixture was concentrated under reduced pressure to remove MeOH. The aq. layer was diluted with water (100 mL), extracted with DCM (3×50 mL). The combined organic layer was washed with brine (50 mL), dried (Na2SO4), filtered and evaporated the solvent under vacuo to give crude, which was purified by CC (silica gel 60-120 mesh, 5% MeOH in DCM) to give 2-[[4-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-phenyl]sulfonyl]-ethanol (0.9 g, 90%) as an off white solid.
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-[2-Fluoro-4-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
2-[2-Fluoro-4-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak AD-H column, MeOH, 30%)) to give [EN1] SC-281, [EN2] SC-282 and a mixture of [EN3] SC-283 and [EN4] SC-284.
[EN1] SC-281—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, EtOH, 20%, Ret. Time 3.81; ee>95%, [α]25589 (c=1.0, CHCl3)=−109.8°; 1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.22 (1H), 8.17-8.19 (1H), 8.06 (1H), 7.94-7.96 (1H), 7.65-7.67 (1H), 7.51-7.56 (2H), 4.85-4.87 (1H), 4.07-4.10 (1H), 3.74-3.79 (1H), 2.78 (3H), 2.14-2.19 (1H), 1.97-2.01 (1H), 1.71-1.74 (1H), 1.48-1.51 (4H).
[EN2] SC-282—analytical SFC Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, EtOH, 20%, Ret. Time 4.67; ee>95%, [α]25589 (c=1.0, CHCl3)=+91.0°; 1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.18-8.19 (1H), 8.06 (1H), 7.94-7.96 (1H), 7.65-7.67 (1H), 7.52-7.56 (2H), 4.85-4.87 (1H), 4.07-4.10 (1H), 3.74-3.79 (1H), 2.78 (3H), 2.14-2.19 (1H), 1.97-2.01 (1H), 1.71-1.74 (1H), 1.48-1.51 (4H).
The mixture of [EN3] SC-283 and [EN4] SC-284 was subjected to preparative chiral-SFC (Chiralpak AD-H column, iPrOH, 35%)) to give [EN3] SC-283 and [EN4] SC-284.
[EN3] SC-283—analytical SFC: Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, EtOH, 20%, Ret. Time 5.59; ee>95%, [α]25589 (c=1.0, CHCl3)=−33.2°; 1H-NMR (600 MHz, [d6]-DMSO): δ =8.17-8.21 (2H), 8.06 (1H), 7.94-7.96 (1H), 7.64-7.67 (1H), 7.51-7.56 (1H), 4.85-4.87 (1H), 4.06-4.10 (1H), 3.74-3.78 (1H), 2.78 (3H), 2.13-2.19 (1H), 1.97-2.02 (1H), 1.71-1.74 (1H), 1.48-1.51 (4H).
[EN4] SC-284—analytical SFC Chiralpak-AD-H (250×4.6 mm 5μ), 3 g/min, RT, EtOH, 20%, Ret. Time 6.28; ee>95%, [α]25589 (c=1.0, CHCl3)=+33.6°; 1H-NMR (600 MHz, [d6]-DMSO): δ =8.17-8.21 (2H), 8.06 (1H), 7.94-7.96 (1H), 7.64-7.67 (1H), 7.51-7.56 (1H), 4.85-4.87 (1H), 4.06-4.10 (1H), 3.74-3.78 (1H), 2.78 (3H), 2.13-2.19 (1H), 1.97-2.02 (1H), 1.71-1.74 (1H), 1.48-1.51 (4H).
2-Ethyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole (Example 70)




KOt-Bu (23.5 mL, 23.54 mmol, 1 M in THF) was added to a stirred solution of 2-methyl-5-(4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran-2-yl)benzo[d]oxazole (Example 68; 5.0 g, 11.76 mmol) in THF (100 mL) at −78° C., then stirred for 30 min. MeI (1.45 mL, 23.54 mmol) was added, slowly warmed to RT and stirred for 18 h. The RM was diluted with water (100 mL) extracted with EtOAc (3×100 mL). The combined organic layer was washed with brine, dried (Na2SO4), filtered and evaporated the solvent under vacuo to give crude, which was purified by CC (0-10% EtOAc in PE as eluent) to give 2-methyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole (1.3 g, 25%) and 2-ethyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole (SC-285, 30 mg, 0.5%) as a white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.20-8.21 (1H), 8.15-8.16 (1H), 8.04 (1H), 7.93-7.95 (1H), 7.59-7.61 (2H), 7.30-7.32 (1H), 4.65-4.67 (1H), 4.06-4.09 (1H), 3.70-3.75 (1H), 2.92-2.96 (2H), 2.13-2.19 (1H), 1.92-1.96 (1H), 1.70-1.73 (1H), 1.48-1.52 (4H), 1.32-1.35 (3H).
2-[[4-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-phenyl]sulfonyl]-ethanol (Example 71)




Step 1: 2-(4-bromophenyl)tetrahydro-2H-pyran-4-ol
4-bromobenzaldehyde (20 g, 108.69 mmol) was dissolved in DCE (400 mL) and cooled in an ice bath. TFA (160 mL) followed by 3-butenol (9.4 mL, 108.69 mmol) were added and the mixture stirred at RT for 48 h. The mixture was diluted with water (500 mL), basified with 6 M NaOH (aq) and extracted with DCM (200 mL×4). Organic layer was separated and washed with brine (300 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude. The crude product was dissolved in MeOH (300 mL) and LiOH (21.7 g, 519.03 mmol) was added. The reaction was stirred at RT for 16 h. MeOH was concentrated under reduced pressure and the residue was diluted with DCM (400 mL) and washed with water (200 mL), brine (200 mL), dried (Na2SO4) and concentrated in vacuo to get crude. The crude compound was purified by CC (silica gel 60-120 mesh, 0-20% EtOAc in PE) to obtain 2-(4-bromophenyl)tetrahydro-2H-pyran-4-ol (18.0 g, 70%) as off white semi solid.
Step 2: 2(4-bromophenyl)tetrahydro-2H-pyran-4-ylmethanesulfonate
Methanesulphonyl chloride (3.5 mL, 46.69 mmol) was added to a solution of 2-(4-bromophenyl)tetrahydro-2H-pyran-4-ol (8.0 g, 31.12 mmol) and DIPEA (13.5 mL, 77.82 mmol) in DCM (180 mL) at 0° C.; allowed to warm to RT and stirred for 16 h. The mixture was diluted with DCM (200 mL) and washed sequentially with, sat. NaHCO3 solution (150 mL), water (150 mL), brine (150 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude 2(4-bromophenyl)tetrahydro-2H-pyran-4-yl-methanesulfonate (10 g crude) as a liquid oil.
Step 3: 2-(4-bromophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran
3-Trifluoromethyl thiophenol (8.1 mL, 59.70 mmol) was added to a suspension of 2(4-bromophenyl)tetrahydro-2H-pyran-4-ylmethanesulfonate (10.0 g crude, 29.85 mmol) and K2CO3 (8.2 g, 59.70 mmol) in DMF (100 mL) and the reaction mixture was heated at 60° C. for 6 h and then stirred at RT for 16 h. After completion of reaction, the mixture was diluted with water (200 mL) and extracted with EtOAc (150 mL×3). The organic extract was washed with water (200 mL), brine (150 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel 100-200 mesh, 0-10% EtOAc in PE) to obtain 2-(4-bromophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (5.6 g, 45.6%) as a yellow oily liquid
Step 4: 2-(4-bromophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
2-(4-bromophenyl)-4-(3-(trifluoromethyl)phenylthio)tetrahydro-2H-pyran (5.5 g, 13.18 mmol) was dissolved in MeOH (140 mL) and a solution of OXONE (24.2 g, 39.56 mmol) in water (125 mL) was added. The total reaction mass was stirred at RT for 16 h. Methanol was concentrated in vacuo; the residue was diluted with water (200 mL) and extracted with EtOAc (3×100 mL). The combined organic extract was washed with brine (100 mL), dried (Na2SO4) and concentrated to get crude. The crude compound was purified by CC (silica gel 60-120 mesh, 0-20% EtOAc in PE) to obtain 2-(4-bromophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (4.0 g, 67.2%) as a solid.
Step 5: 2-(4-bromphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran
A solution of 2-(4-bromophenyl)-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (4.0 g, 8.92 mmol) in THF (80 mL) was cooled to −78° C. and KOt-Bu (1M solution in THF; 17.8 mL, 17.8 5 mmol) was added drop-wise. CH3I (3.1 mL, 22.32 mmol) was added and the resulting mixture was warmed to RT and stirred for 16 h. The reaction mass was diluted with EtOAc (200 mL) and washed with water (100 mL) and brine (100 mL), dried (Na2SO4) and concentrated under reduced pressure to get crude compound. The crude compound was purified by CC (silica gel 100-200 mesh, 0-10% EtOAc in PE) to obtain 2-(4-bromophenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (2.6 g, 63%) as a solid.
Step 6: 4-methy-4-l(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran-2-yl)phenylthio)ethanol
A solution of 2-(4-bromphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran (1.5 g, 3.24 mmol) and DIPEA (1.1 mL, 6.49 mmol) in toluene (20 mL) was degassed for 10 min, added Xantphos (94 mg, 0.16 mmol) followed by Pd2(dba)3 (149 mg, 0.16 mmol) and degassed again for 10 min. 2-mercaptoethanol (508 mg, 6.49 mmol) was then added and further degassed for 5 min. The resulting mixture was heated at 120° C. for 16 h under argon. Reaction mass was filtered through celite and the filtrate concentrated to yield crude product. The crude product was purified by CC (silica gel 100-200 mesh 0-15% EtOAc in PE) to obtain 4-methy-4-1(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran-2-yl)phenylthio)ethanol (800 mg, 57.5%) as solid.
Step 7: 2-(4-bromphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran-2-yl)phenylsulfonyl)ethanol
4-methy-4-1(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran-2-yl)phenylthio)ethanol (800 mg, 1.73 mmol) was dissolved in MeOH (18.5 mL) and a solution of OXONE (3.2 g, 5.21 mmol) in Water (16 mL) was added and stirred at RT for 16 h. MeOH was concentrated in vacuo; the residue was diluted with water (100 mL) and extracted with DCM (3×100 mL). The organic extract was washed with brine (100 mL), dried (Na2SO4) and concentrated to get crude. The crude compound was purified by CC (silica gel 100-200 mesh, 0-20% EtOAc in Pet ether) to obtain 2-(4-bromphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran-2-yl)phenylsulfonyl)ethanol (700 mg, 58%) as a white solid.
1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.22 (1H), 8.16-8.17 (1H), 8.05 (1H), 7.94-7.96 (1H), 7.87-7.88 (2H), 7.59-7.61 (2H), 488-4.91 (1H), 4.68-4.71 (1H), 4.08-4.11 (1H), 3.67-3.75 (3H), 2.13-2.18 (1H), 1.85-1.89 (1H), 1.78-1.81 (1H), 1.48-1.52 (4H).
NOE: C-2 proton & methyl=cis
Chiral resolution of 2-(4-bromphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran-2-yl)phenylsulfonyl)ethanol
[Cis-rac] 2-(4-bromphenyl)-4-methyl-4-(3-(trifluoromethyl)phenylsulfonyl)tetrahydro-2H-pyran-2-yl)phenylsulfonyl)ethanol was subjected to preparative chiral-SFC (Chiralcel-OJ-H column, MeOH, 25%) to give [cis-EN1] SC-286 and [cis-EN2] SC-287.
[cis-EN1] SC-286—analytical SFC: Chiralcel-OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 25%, Ret. Time 2.21; ee>95%
[cis-EN2] SC-287—analytical SFC: Chiralcel-OJ-H (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 25%, Ret. Time 3.02; ee>95%
2-[4-Chloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 72)




Chiral resolution of 2-(4-chloro-2-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
[Cis-rac] 2-(4-chloro-2-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran was subjected to preparative chiral-SFC (Chiralpak-AD-H column, 0.5% DEA in MeOH, 20%)) to give [cis-EN1]-2-(4-chloro-2-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran and [cis-EN2]-2-(4-chloro-2-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran.
[cis-EN1]-2-(4-chloro-2-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran—analytical SFC: LUX-Amylose-2 (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 30%, Ret. Time 2.09; ee>95%;
NOE: C-2 proton & methyl=cis
[cis-EN1]-2-(4-chloro-2-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran—analytical SFC: LUX-Amylose-2 (250×4.6 mm 5μ), 3 g/min, RT, 0.5% DEA in MeOH, 30%, Ret. Time 2.47; ee>95%;
NOE: C-2 proton & methyl=cis
Sodium metaperiodate (0.73 g, 3.44 mmol) was added to a stirred solution of [cis-EN1]-2-(4-chloro-2-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.8 g, 1.72 mmol) in MeOH (80 mL), Water (16 mL) and stirred for 24 h at RT. The reaction mixture was concentrated under reduced pressure to remove MeOH. The Aq. layer was diluted with water (100 mL), extracted with DCM (3×50 mL). The combined organic layer was washed with brine (50 mL), dried (Na2SO4), filtered and evaporated the solvent under vacuo to give crude, which was purified by CC (silica gel, 5% MeOH in DCM) to give [Epi-Mix1]2-[4-chloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran (0.6 g, 72%) as an off white solid.
Chiral resolution of [Epi-Mix1]2-[4-Chloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Epi-Mix1]2-[4-Chloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-AS-H column, MeOH, 25%)) to give [EN1] SC-288 and [EN2] SC-289.
[EN1] SC-288—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, iPrOH, 20%, Ret. Time 4.22; ee>95; [α]25589 (c=1.0, CHCl3)=−68.2°; 1H-NMR (600 MHz, [d6]-DMSO): δ=8.21-8.24 (2H), 8.11 (1H), 7.95-7.98 (1H), 7.88 (1H), 7.61-7.63 (1H), 7.52-7.54 (1H), 4.69-4.71 (1H), 3.99-4.02 (1H), 3.72-3.77 (1H), 2.74 (3H), 2.07-2.13 (2H), 1.91-1.94 (1H), 1.48-1.51 (4H).
[EN2] SC-289—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, iPrOH, 20%, Ret. Time 5.75; ee>95%; [α]25589 (c=1.0, CHCl3)=+54.0°; 1H-NMR (600 MHz, [d6]-DMSO): δ =8.17-8.22 (2H), 8.06 (1H), 7.93-7.96 (2H), 7.57-7.59 (1H), 7.46-7.47 (1H), 4.81-4.83 (1H), 4.05-4.08 (1H), 3.66-3.70 (1H), 2.70 (3H), 2.16-2.26 (2H), 1.59-1.62 (1H), 1.49-1.51 (4H).
Sodium metaperiodate (0.73 g, 3.44 mmol) was added to a stirred solution of [cis-EN2]-2-(4-chloro-2-(methylthio)phenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (0.8 g, 1.72 mmol) in methanol (80 mL), Water (16 mL) and stirred for 24 h at RT. The reaction mixture was concentrated under reduced pressure to remove MeOH. The Aq. layer was diluted with water (100 mL), extracted with DCM (3×50 mL). The combined organic layer was washed with brine (50 mL), dried (Na2SO4), filtered and evaporated the solvent under vacuo to give crude, which was purified by CC (silica gel, 5% MeOH in DCM) to give [Epi-Mix2]2-[4-Cchloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran (0.6 g, 72%) as an off white solid.
Chiral resolution of [Epi-Mix2] 2-[4-Chloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
[Epi-Mix2]2-[4-Chloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran was subjected to preparative chiral-SFC (Chiralpak-AS-H column, MeOH, 25%)) to give [EN3] SC-290 and [EN4] SC-291.
[EN3] SC-290—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, iPrOH, 20%, Ret. Time 5.46; ee>95; [α]25589 (c=1.0, CHCl3)=−75.6°; 1H-NMR (600 MHz, [d6]-DMSO): δ=8.21-8.22 (1H), 8.17-8.18 (1H), 8.06 (1H), 7.93-7.95 (2H), 7.57-7.59 (1H), 7.46-7.47 (1H), 4.81-4.83 (1H), 4.04-4.08 (1H), 3.66-3.70 (1H), 2.70 (3H), 2.16-2.25 (2H), 1.59-1.62 (1H), 1.48-1.51 (4H).
[EN4] SC-291—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 3 g/min, RT, iPrOH, 20%, Ret. Time 3.87; ee>95%; [α]25589 (c=1.0, CHCl3)=+66.0°; 1H-NMR (600 MHz, [d6]-DMSO): δ =8.21-8.24 (2H), 8.11 (1H), 7.95-7.98 (1H), 7.88 (1H), 7.61-7.63 (1H), 7.52-7.54 (1H), 4.69-4.71 (1H), 3.99-4.02 (1H), 3.72-3.77 (1H), 2.74 (3H), 2.06-2.13 (2H), 1.91-1.94 (1H), 1.49-1.51 (4H).
Synthesis of Examples 76 to 82
Cis/Trans Assignment of Examples 76 to 82
The cis racemic [cis-rac] and trans racemic [trans-rac] compounds were separated after the methylation step using CC or prep-HPLC. The assignment of cis racemic [cis-rac]versus trans racemic [trans-rac] was carried out by NOE studies. In some cases only the cis racemic [cis-rac] compound was assigned by NOE studies at this stage (after the methylation step). In these cases the trans racemic [trans-rac] compound was confirmed by NOE studies on the final trans racemic [trans-rac]target molecule. Formation of the cis racemic [cis-rac] isomer is generally favoured over formation of the trans racemic [trans-rac] isomer (generally yield<10%).
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran (Example 76)




Step 1: 2-(4-Bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-ol
Stage 1:
To a solution of 4-bromo-2-fluorobenzaldehyde (60 g, 295.56 mmol, 1 eq) in DCE (500 ml) was added 3-buten-1-ol (30 ml, 354.67 mmol, 1.2 eq) and TFA (440 ml) at 0° C. and the RM was stirred at RT for 66 h. The reaction was quenched with ice-water (500 ml) and basified using 6N NaOH solution to pH=8. The aq. layer was extracted with DCM (3×500 ml). The combined organic layers were washed with brine (400 ml), dried (Na2SO4) concentrated in vacuo.
Stage 2:
To a solution of the product from stage 1(108 g, 291.89 mmol, 1 eq) dissolved in MeOH (500 ml) was added lithium hydroxide (31 g, 758.91 mmol, 2.6 eq) and the mixture was stirred for 18 h at RT. MeOH was concentrated under reduced pressure and the residue was diluted with DCM (500 ml). The organic layer was washed with water (500 ml) and brine (500 ml), dried (Na2SO4) and concentrated in vacuo. The crude was purified by CC (silica gel, 0-20% EtOAc in PE) to afford the desired product (50 g, 61%).
Step 2: 2-(4-Bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
Methanesulfonyl chloride (4.2 ml, 114.5 mmol, 1.5 eq) was added to a solution of 2-(4-bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-ol (10 g, 36.49 mmol, 1 eq) and DIPEA (15.86 ml, 90.69 mmol, 2.5 eq) in DCM (100 ml) at 0° C. and the mixture was stirred for 3 h at RT. After completion of the reaction, the mixture was diluted with DCM (300 ml), washed with water (200 ml) and brine solution (100 ml), dried (Na2SO4) and concentrated under reduced pressure to afford the desired product (10 g).
Step 3: (2-(4-Bromo-2-fluorophenyl)-4-((3-isopropoxyphenyl)thio)tetrahydro-2H-pyran
To a solution of 2-(4-bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (6.3 g, 17.83 mmol, 1.0 eq) in DMF (75 ml) was added K2CO3 (6.15 g, 44.6 mmol, 2.5 eq) and 3-trifluoromethylthiophenol (3.0 g, 17.83 mmol, 1.0 eq), and the RM was heated to 50° C. for 20 h. After completion of the reaction, the mixture was diluted with EtOAc (200 ml), washed with water (3×100 ml) and brine (100 ml), dried (Na2SO4) and concentrated in vacuo. The crude product was purified by CC (silica-gel, 0-5% EtOAc in PE) to afford the desired product (2.2 g, 30%).
Step 4: 2-(4-Bromo-2-fluorophenyl)-4-((3-isopropoxyphenyl)sulfonyl)tetrahydro-2H-pyran
Oxone (9.6 g, 15.6 mmol, 3.0 eq) in water (20 ml) was added to a solution of 2-(4-bromo-2-fluorophenyl)-4-((3-isopropoxyphenyl)thio)tetrahydro-2H-pyran (2.2 g, 5.20 mmol, 1.0 eq) in MeOH (60 ml) at RT and the mixture was stirred for 18 h. After completion of the reaction, MeOH was removed under reduced pressure. The residue was diluted with water (80 ml) and extracted with EtOAc (3×75 ml). The organic layer was washed with brine (100 ml), dried (Na2SO4) and concentrated. The crude product was purified by CC (silica-gel, 10-20% EtOAc in PE) to afford the desired product (1.4 g, 59%).
Step 5: 2-(4-Bromo-2-fluorophenyl)-4-((3-isopropoxyphenyl)sulfonyl)-4-methyltetrahydro-2H-pyran
A solution of 2-(4-bromo-2-fluorophenyl)-4-((3-isopropoxyphenyl)sulfonyl)tetrahydro-2H-pyran (1.4 g, 3.07 mmol, 1.0 eq) in THF (30 ml) was cooled to −78° C. and t-BuOK (1M solution in THF) (6.2 ml, 6.14 mmol, 2.0 eq) was added dropwise. The mixture was stirred for 30 min and CH3I (0.3 ml, 4.61 mmol, 1.5 eq) was added. The resulting mixture was allowed to warm to RT and stirred for 18 h. The RM was quenched with water (80 ml) and extracted with EtOAc (3×70 ml). The combined organic extract was washed with water (100 ml) and brine (100 ml), dried (Na2SO4) and concentrated under reduced pressure. The residue upon purification by CC (EtOAc-PE; 1:9 to 2:8) afforded the desired [cis-rac] product (700 mg, 49%).
The fractions from the column consisting of a mixture of cis & trans isomers were purification further by prep-HPLC to afford the desired [trans-rac] product (45 mg).
Step 6: 2-(2-Fluoro-4-(methylthio)phenyl)-4-((3-isopropoxyphenyl)sulfonyl)-4-methyltetrahydro-2H-pyran
A solution of [cis-rac] 2-(4-bromo-2-fluorophenyl)-4-((3-isopropoxyphenyl)sulfonyl)-4-methyltetrahydro-2H-pyran (700 mg, 1.50 mmol, 1.0 eq), DIPEA (0.52 ml, 3.0 mmol, 2.0 eq) and sodium thiomethoxide (156 mg, 2.25 mmol, 1.5 eq) in toluene (40 ml) was degassed for 10 min. Xantphos (61 mg, 0.105 mmol, 0.07 eq) was added, followed by Pd2(dba)3 (97 mg, 0.105 mmol, 0.07 eq), and the mixture was degassed again for 10 min. The resulting RM was heated to 110° C. for 18 h under argon. The RM was diluted with water (40 ml) and extracted with EtOAc (2×30 ml). The combined organic extracts were washed with water (50 ml) and brine (50 ml), dried (Na2SO4) and concentrated under reduced pressure. The crude product was purified by flash chromatography (silica gel, 0-20% EtOAc in PE) to afford the desired [cis-rac] product (420 mg, 64%).
Step 7: 2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran
Oxone (1.8 g, 2.88 mmol, 3.0 eq) in water (7.0 ml) was added to a solution of [cis-rac] 2-(2-fluoro-4-(methylthio)phenyl)-4-((3-isopropoxyphenyl)sulfonyl)-4-methyltetrahydro-2H-pyran (420 mg, 0.96 mmol, 1.0 eq) in MeOH (20 ml) at RT and the mixture was stirred for 18 h. After completion of the reaction MeOH was distilled off under reduced pressure. The residue was diluted with EtOAc (75 ml), washed with water (2×50 ml) and brine (75 ml), dried (Na2SO4) and concentrated. The crude product was purified flash chromatography (silica-gel, 20-30% EtOAc in PE) to afford [cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran (300 mg, 66%) [TLC system: EtOAc-PE; 2:3; Rf: 0.40].
Chiral resolution of [cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran
[Cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran was subjected to chiral prep-SFC purification to give 95 mg of [cis-EN1] SC-500 and 100 mg of [cis-EN2] SC-501. Preparative SFC Conditions: Column/dimensions: Chiralpak AD-H (250×30) mm; CO2: 60%; Co solvent: 40% MeOH; Total Flow: 100 g/min; Back Pressure: 100 bar; UV: 223 nm.
[cis-EN1] SC-500—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 26° C., 3 g/min, 100 bar, 40% of 0.5% DEA in MeOH, Ret. Time 3.11 min
[cis-EN2] SC-501—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 26° C., 3 g/min, 100 bar, 40% of 0.5% DEA in MeOH, Ret. Time 3.55 min
[Trans-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran
The corresponding [trans rac] isomer was prepared in analogy to step 6 and 7 starting from [trans rac] 2-(4-bromo-2-fluorophenyl)-4-((3-isopropoxyphenyl)sulfonyl)-4-methyltetrahydro-2H-pyran (45 mg, see step 5) to yield [trans-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran SC-511 (28 mg, 62%; over 2 steps) [TLC system: EtOAc-PE; 2:3; Rf: 0.40].
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran (Example 77)




The synthesis was carried out in analogy to Example 76 to give [cis rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran [TLC system: EtOAc-PE; 4:6; Rf: 0.38] and [trans rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran SC-504 [TLC system: EtOAc-PE; 4:6; Rf: 0.49].
Chiral resolution of [cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran
[Cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran was subjected to chiral prep-SFC purification to give 85 mg of [cis-EN1] SC-502 and 85 mg of [cis-EN2] SC-503. Preparative SFC Conditions: Column/dimensions: Lux cellulose-2 (250×21) mm; CO2: 75%; Co solvent: 25% MeOH; Total Flow: 100 g/min; Back Pressure: 100 bar; UV: 220 nm.
[cis-EN1] SC-502—analytical SFC: Lux cellulose-2 (250×4.6 mm 5μ), 26° C., 3 g/min, 100 bar, 20% of 0.5% DEA in MeOH, Ret. Time 5.0 min
[cis-EN2] SC-503—analytical SFC: Lux cellulose-2 (250×4.6 mm 5μ), 26° C., 3 g/min, 100 bar, 20% of 0.5% DEA in MeOH, Ret. Time 5.4 min
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran (Example 78)




The synthesis was carried out in analogy to Example 76 to give [cis rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran [TLC system: EtOAc-PE; 4:6; Rf: 0.62] and [trans rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran SC-505 [TLC system: EtOAc-PE; 4:6; Rf: 0.53].
Chiral resolution of [cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran
[Cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl)sulfonyl]-4-methyl-tetrahydro-pyran was subjected to chiral prep-SFC purification to give 100 mg of [cis-EN1] SC-506 and 105 mg of [cis-EN2] SC-507. Preparative SFC Conditions: Column/dimensions: Chiralpak AD-H (250×30) mm; CO2: 55%; Co solvent: 45% MeOH; Total Flow: 90 g/min; Back Pressure: 100 bar; UV: 222 nm.
[cis-EN1] SC-506—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 26.5° C., 4 g/min, 100 bar, 40% MeOH, Ret. Time 2.17 min
[cis-EN2] SC-507—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 26.4° C., 4 g/min, 100 bar, 40% MeOH, Ret. Time 2.83 min
4-[[3-(Difluoro-methyl)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran (Example 79)




The synthesis was carried out in analogy to Example 76 to give [cis rac] 4-[[3-(difluoro-methyl)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran [TLC system: EtOAc-PE; 5:5; Rf: 0.48] and [trans rac] 4-[[3-(difluoro-methyl)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran SC-508 [TLC system: EtOAc-PE; 5:5; Rf: 0.45].
Chiral resolution of [cis-rac] 4-[[3-(difluoro-methyl)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
[Cis-rac] 4-[[3-(difluoro-methyl)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran was subjected to chiral prep-SFC purification to give 101 mg of [cis-EN1] SC-509 and 97 mg of [cis-EN2] SC-510. Preparative SFC Conditions: Column/dimensions: Chiralpak IE (250*21) nm; CO2: 67%; Co solvent: 33% MeOH; Total Flow: 60 g/min; Back Pressure: 100 bar; UV: 220 nm.
[cis-EN1] SC-509—analytical SFC: Chiralpak IE (250×4.6 mm 5μ), 26° C., 3 g/min, 100 bar, 35% of 0.5% DEA in MeOH, Ret. Time 5.70 min
[cis-EN2] SC-510—analytical SFC: Chiralpak IE (250×4.6 mm 5μ), 26° C., 3 g/min, 100 bar, 35% of 0.5% DEA in MeOH, Ret. Time 6.89 min
The starting material 3-(difluoromethyl)benzenethiol was prepared as follows:
(A) A stirred solution of 3-iodobenzaldehyde (25.0 g, 108.2 mmol, 1.0 eq) in DCM (400 ml) was cooled to −78° C. and treated with DAST (57.0 ml, 432.9 mmol, 4.0 eq) in a dropwise manner. The RM was maintained at −78° C. for 2 h, allowed to warm to RT and stirred for 16 h. The RM was quenched with cold water (100 ml), adjusted to a basic pH with sat. aq. NaHCO3 and extracted with DCM (200 ml×3). The combined organic layers were washed with water (300 ml×2) and brine (300 ml), dried (Na2SO4), filtered and concentrated. The residue upon purification by flash chromatography (silica gel; PE-EtOAc; 100:0 to 95:5) afforded 1-(difluoromethyl)-3-iodobenzene (23.0 g, 85%).
(B) To a stirred solution of 1-(difluoromethyl)-3-iodobenzene (6 g, 23.71 mmol, 1.0 eq) in DMF (60 ml) was added sequentially K2CO3 (6.5 g, 47.43 mmol, 2.0 eq), CuI (0.45 g, 2.371 mmol, 0.1 eq) and sulfur powder (2.27 g, 71.1 mmol, 3.0 eq). The resulting RM was heated to 90° C. and stirred for 16 h. The RM was cooled to 0° C. and flushed with an Ar balloon. Triphenylphosphine (9.3 g, 35.5 mmol, 1.5 eq) and con HCl (2.5 ml) were added. The RM was heated to 100° C. and stirred at this temperature for 14 h. The RM was allowed to cool to RT, quenched with cold water (200 ml), adjusted to pH  ̃2 with 2N HCl and extracted with EtOAc (200 ml×2). The combined organic layers were washed with water (2×200 ml), and brine (500 ml), dried over Na2SO4, filtered and concentrated under reduced pressure to afford 3-(difluoromethyl)benzenethiol (3 g).
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran (Example 81)




The synthesis was carried out in analogy to Example 76 to give [cis rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran [TLC system: EtOAc-PE; 4:6; Rf: 0.4] and [trans rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran SC-515 [TLC system: EtOAc-PE; 4:6; Rf: 0.40].
Chiral resolution of [cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran
[Cis-rac] 2-(2-fluoro-4-methylsulfonyl-phenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran was subjected to chiral prep-SFC purification to give 275 mg of [cis-EN1] SC-518 and 345 mg of [cis-EN2] SC-519. Preparative SFC Conditions: Column/dimensions: Chiralpak IE (250*21) nm; CO2: 85%; Co solvent: 15% EtOH; Total Flow: 90 g/min; Back Pressure: 100 bar; UV: 220 nm.
[cis-EN1] SC-518—analytical SFC: Chiralpak IE (250×4.6 mm 5μ), 25.5° C., 3 g/min, 100 bar, 20% of 0.5% DEA in MeOH, Ret. Time 2.33 min
[cis-EN2] SC-519—analytical SFC: Chiralpak IE (250×4.6 mm 5μ), 26° C., 3 g/min, 100 bar, 20% of 0.5% DEA in MeOH, Ret. Time 2.67 min
4-[(3-Cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran (Example 80)




Step 1: 2-(4-Bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-ol
Stage 1:
To a solution of 4-bromo-2-fluorobenzaldehyde (60 g, 295.56 mmol, 1 eq) in DCE (500 ml) was added 3-buten-1-ol (30 ml, 354.67 mmol, 1.2 eq) and TFA (440 ml) at 0° C. The RM was stirred at RT for 66 h. The reaction mass was quenched with ice-water (500 ml), basified using 6N NaOH solution to pH=8, and the aq. layer was extracted with DCM (3×500 ml). The combined organic layers were washed with brine (400 ml), dried (Na2SO4) and upon concentration afforded the desired product (108 g).
Stage 2:
To a solution of the product from stage 1 (108 g, 291.89 mmol, 1 eq) in methanol (500 ml), was added lithium hydroxide (31 g, 758.91 mmol, 2.6 eq) and the RM was stirred for 18 h at RT. MeOH was concentrated under reduced pressure and the residue was diluted with DCM (500 ml). The organic layer was washed with water (500 ml) and brine (500 ml), dried (Na2SO4) and concentrated in vacuum. Column chromatography (silica gel, 0-20% EtOAc in PE) afforded the title compound (50 g, 61%, over 2 steps).
Step 2: 2-(4-Bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
Methanesulfonyl chloride (4.2 ml, 54.74 mmol, 1.5 eq) was added to a solution of 2-(4-bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-ol (10 g, 36.49 mmol, 1 eq) and DIPEA (15.7 ml, 91.24 mmol, 2.5 eq) in DCM (150 ml) at 0° C. and the RM was stirred for 3 h at RT. After completion of the reaction, the mixture was diluted with DCM (150 ml), washed with water (2×150 ml) and brine (150 ml), dried (Na2SO4) and the solvent was distilled off under reduced pressure to afford the desired product (14 g).
Step 3: 3-((-2-(4-Bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl)thio)phenol
To a solution of 2-(4-bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (14 g, 39.66 mmol, 1 eq) in DMF (150 ml) was added K2CO3 (16.4 g, 118.98 mmol 3 eq) and 3-mercaptophenol (8.1 ml, 79.32 mmol, 2 eq) and the RM was heated to 50° C. and stirred for 18 h. After completion of the reaction, the mixture was diluted with EtOAc (200 ml), washed with water (3×200 ml) and brine (200 ml), dried (Na2SO4) and concentrated in vacuum to get the crude compound which was purified by CC (silica-gel, 0-15% EtOAc in PE) to afford the desired product (11.0 g, 79%, over 2 steps).
Step 4: 3-((-2-(4-Bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl)sulfonyl)phenol
Oxone (9.0 g, 31.33 mmol, 3 eq) in water (40 ml) was added to a solution of 3-((-2-(4-bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl)thio)phenol (4.0 g, 10.44 mmol, 1 eq) in MeOH (80 ml) at RT and the RM stirred for 18 h. After completion of the reaction MeOH was distilled off under reduced pressure and the residue was diluted with EtOAc (50 ml). This was then washed with water (2×100 ml) and brine (100 ml), dried (Na2SO4) and concentrated to get the crude product which was purified by flash chromatography to yield the title compound (4.0 g, 92%).
Step 5: (3-((-2-(4-Bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl)sulfonyl)phenoxy)(tert-butyl)dimethylsilane
To a solution of 3-((-2-(4-bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl)sulfonyl)phenol (4 g, 9.63 mmol, 1 eq) in DCM (100 ml) was added imidazole (1.63 g, 24.09 mmol 2.5 eq) and TBDMSCI (2.16 g, 14.45 mmol, 1.5 eq) at 0° C., the RM was stirred at RT for 1 h. After completion of the reaction, the mixture was diluted with EtOAc (100 ml) washed with water (3×100 ml) and brine (210 ml), dried (Na2SO4) and concentrated in vacuum. The crude compound was purified by flash chromatography to afford the desired product (4.5 g, 90%).
Step 6: 3-((-2-(4-Bromo-2-fluorophenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenol
A solution of 3-((-2-(4-bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl)sulfonyl)phenol (5 g, 9.46 mmol, 1 eq) in THF (150 ml) was cooled to −78° C. and potassium tert-butoxide (1M solution in THF) (19 ml, 18.92 mmol, 2 eq) was added dropwise. It was stirred for 30 min and then MeI (0.88 ml, 14.20 mmol, 1.5 eq) was added. The resulting mixture was allowed to warm to RT and stirred for 18 h. The reaction mass was quenched with water (100 ml) and extracted with ethyl acetate (3×150 ml). The combined organic extracts were washed with brine (100 ml), dried (Na2SO4) and concentrated. The residue upon purification by flash chromatography afforded [cis rac] 3-((-2-(4-bromo-2-fluorophenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenol (2.1 g, 52%) and [trans rac] 3-((-2-(4-bromo-2-fluorophenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenol (180 mg).
Step 7: 3-((-2-(2-Fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenol
To a solution of [cis rac] 3-((-2-(4-bromo-2-fluorophenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenol (1.9 g, 4.60 mmol, 1 eq) and DIPEA (2.4 ml, 13.8 mmol, 3 eq) in toluene (40 ml) was added NaSMe (483 mg, 6.90 mmol, 1.5 eq). The mixture was degassed for 10 min and Xantphos (186 mg, 0.322 mmol, 0.07 eq) followed by Pd2(dba)3 (294 mg, 0.322 mmol, 0.07 eq) was added. The mixture was again degassed for 10 min and heated to 100° C. for 18 h under argon. The reaction mass was filtered through celite and the filtrate concentrated to yield the crude product which upon flash chromatography afforded [cis rac] 3-((-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenol (1.4 g, 76%).
Step 8: 3-((-2-(2-Fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenyl trifluoromethanesulfonate
To a solution of [cis rac] 3-((-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenol (1.4 g, 3.53 mmol, 1 eq) in DCM (80 ml) was added pyridine (0.71 mL, 8.83 mmol 2.5 eq) and trifluoroacetic acid anhydride (0.87 mL, 5.30 mmol, 1.5 eq) at 0° C., the RM was stirred at RT for 1 h. The mixture was diluted with DCM (80 ml) washed with sat. NaHCO3 solution (80 ml), water (3×80 ml) and brine (80 ml), dried (Na2SO4) and concentrated. The crude compound was purified by flash chromatography to afford [cis rac] 3-((-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenyl trifluoromethanesulfonate (1.2 g, 64%).
Step 9: 4-((3-Cyclopropylphenyl)sulfonyl)-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran
To a solution of [cis rac] 3-((-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenyl trifluoromethanesulfonate (1.1 g, 2.08 mmol, 1 eq) and cesium carbonate (1.0 g, 3.12 mmol, 1.5 eq) in toluene (60 ml), water (5 mL) and cyclopropyl boronic acid (214 mg, 2.49 mmol, 1.2 eq) was added. It was degassed for 10 min, and Pd(dppf)2Cl2.DCM (135 mg, 0.166 mmol, 0.08 eq) was added and again degassed for 10 min. The resulting mixture was heated to 100° C. and stirred for 16 h under Ar. The RM was filtered through celite and the filtrate concentrated to provide the crude product, which upon flash chromatography afforded compound [cis rac] 4-((3-cyclopropylphenyl)sulfonyl)-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran (640 mg, 73%).
Step 10: 4-[(3-Cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
Oxone (1.53 g, 4.99 mmol, 3 eq) in water (15 ml) was added to a solution of [cis rac] 4-((3-cyclopropylphenyl)sulfonyl)-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran (700 mg, 1.66 mmol, 1 eq) in methanol (30 ml) at RT and the mixture stirred for 18 h. Methanol was distilled off under reduced pressure, and the residue was diluted with EtOAc (50 ml), washed with water (2×50 ml) and brine (50 ml), dried (Na2SO4) and concentrated. The crude product was purified by flash chromatography to afford [cis rac]4-[(3-cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran (500 mg, 66%) [TLC system: EtOAc-PE; 4:6; Rf: 0.48].
Chiral resolution of [cis-rac] 4-[(3-cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
[Cis-rac] 4-[(3-cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran was subjected to chiral prep-SFC purification to give 165 mg of [cis-EN1] SC-512 and 175 mg of [cis-EN2] SC-513. Preparative SFC Conditions: Column/dimensions: Chiralpak AD-H (250×30) mm; CO2: 55%; Co solvent: 45% MeOH; Total Flow: 100 g/min; Back Pressure: 100 bar; UV: 222 nm.
[cis-EN1] SC-512-1st eluting enantiomer
[cis-EN2] SC-513-2nd eluting enantiomer
[Trans rac] 4-[(3-cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
The corresponding [trans rac] isomer was prepared in analogy to steps 7 to 10 starting from [trans rac] 3-((2-(4-bromo-2-fluorophenyl)-4-methyltetrahydro-2H-pyran-4-yl)sulfonyl)phenol (180 mg, see step 6) to yield [trans rac] 4-[(3-cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran SC-514 (40 mg) [TLC system: EtOAc-PE; 4:6; Rf: 0.55].
4-[[3-(Difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran (Example 82)




Step 1: 2-(4-Bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)thio)tetrahydro-2H-pyran
To a solution of 3-((-2-(4-bromo-2-fluorophenyl)tetrahydro-2H-pyran-4-yl)thio)phenol (7.5 g, 19.582 mmol, 1 eq) [see step 3 product, Example 80] in DMF (150 ml), was added K2CO3 (5.4 g, 39.164 mmol, 12 eq). The RM was heated to 90° C. Freon gas was purged into the RM for 4 h. After completion of the reaction, the mixture was diluted with EtOAc (200 ml), washed with water (3×200 ml) and brine (200 ml), dried (Na2SO4) and concentrated in vacuum. The crude compound was purified by CC (silica-gel, 0-15% EtOAc in PE) to afford the title compound (5 g, 59%).
Step 2: 2-(4-Bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)sulfonyl)tetrahydro-2H-pyran
Oxone (14.2 g, 23.148 mmol, 2 eq) was added to a solution of 2-(4-bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)thio)tetrahydro-2H-pyran (5.0 g, 10.44 mmol, 1 eq) in water (40 ml) and MeOH (80 ml) at RT and stirred for 18 h. MeOH was distilled off under reduced pressure and the residue was diluted with EtOAc (100 ml), washed with water (2×100 ml) and brine (100 ml), dried (Na2SO4) and concentrated. The crude product was purified by flash chromatography to afford the title compound (5.0 g, 94%).
Step 3: 2-(4-Bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)sulfonyl)-4-methyltetrahydro-2H-pyran
To a solution of 2-(4-bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)sulfonyl)tetrahydro-2H-pyran (4 g, 8.602 mmol, 1 eq) in THF (150 ml) at −78° C., was added dropwise t-BuOK (1M solution in THF, 17 ml, 17.204 mmol, 2 eq) and the mixture was stirred for 30 min. Methyl iodide (0.88 ml, 12.903 mmol, 1.5 eq) was added and the resulting RM was allowed to warm to RT and stir for 18 h. The reaction mass was quenched with water (100 ml) and extracted with ethyl acetate (3×150 ml). The combined organic extracts were washed with brine (100 ml), dried (Na2SO4) and concentrated. The residue upon purification by flash chromatography afforded [cis rac] 2-(4-bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)sulfonyl)-4-methyltetrahydro-2H-pyran (1.3 g, 52%) and [trans rac] 2-(4-bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)sulfonyl)-4-methyltetrahydro-2H-pyran (200 mg).
Step 4: 4-((3-(Difluoromethoxy)phenyl)sulfonyl)-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran
To a solution of [cis rac] 2-(4-bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)sulfonyl)-4-methyltetrahydro-2H-pyran (1.3 g, 2.719 mmol, 1 eq) and DIPEA (1.4 ml, 8.158 mmol, 3 eq) in toluene (40 ml), was added NaSMe (285 mg, 4.079 mmol, 1.5 eq). The mixture was degassed for 10 min and Xantphos (110 mg, 0.190 mmol, 0.07 eq) followed by Pd2(dba)3 (175 mg, 0.190 mmol, 0.07 eq) was added and it was again degassed for 10 min. The resulting RM was heated to 100° C. for 18 h under Ar. The reaction mass was filtered through celite and the filtrate concentrated to yield the crude product which was purified by flash chromatography to afford [cis rac] 4-((3-(difluoromethoxy)phenyl)sulfonyl)-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran (850 mg, 70%).
Step 5: 4-[[3-(Difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
Oxone (2.2 g, 3.587 mmol, 2 eq) was added to a solution of [cis rac] 4-((3-(difluoromethoxy)phenyl)sulfonyl)-2-(2-fluoro-4-(methylthio)phenyl)-4-methyltetrahydro-2H-pyran (800 mg, 1.793 mmol, 1 eq) in water (15 ml) and MeOH (30 ml) at RT and the mixture was stirred for 18 h. After completion of the reaction MeOH was distilled off under reduced pressure. The residue was diluted with EtOAc (50 ml), washed with water (2×50 ml) and brine (50 ml), dried (Na2SO4) and concentrated. The crude product was purified by flash chromatography to afford [cis rac] 4-[[3-(difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran (600 mg, 70%) [TLC system: EtOAc-PE; 4:6; Rf: 0.48].
Chiral resolution of [cis rac] 4-[[3-(difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
[Cis-rac] 4-[[3-(difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran was subjected to chiral prep-SFC purification to give 110 mg of [cis-EN1] SC-516 and 114 mg of [cis-EN2] SC-517. Preparative SFC Conditions: Column/dimensions: Chiralpak AD-H (250×30) mm; CO2: 70%; Co solvent: 30% MeOH; Total Flow: 100 g/min; Back Pressure: 100 bar; UV: 220 nm.
[cis-EN1] SC-516—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 26° C., 4 g/min, 100 bar, 40% of 0.5% DEA in MeOH, Ret. Time 2.33 min
[cis-EN2] SC-517—analytical SFC: Chiralpak AD-H (250×4.6 mm 5μ), 26° C., 4 g/min, 100 bar, 40% of 0.5% DEA in MeOH, Ret. Time 2.67 min
[Trans rac] 4-[[3-(difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran
The corresponding [trans rac] isomer was prepared in analogy to steps 4 & 5 starting from [trans rac] 2-(4-bromo-2-fluorophenyl)-4-((3-(difluoromethoxy)phenyl)sulfonyl)-4-methyltetrahydro-2H-pyran (150 mg, see step 3) to yield [trans rac] 4-[[3-(difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran SC-520 (70 mg) [TLC system: EtOAc-PE; 4:6; Rf: 0.52].
2-[4-(Cyclopropylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran (Example 83)




Step 1: 2-(4-Bromophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate
A solution of 4-bromobenzaldehyde (5.00 g, 27.0 mmol) in DCM (30 mL) was prepared, followed by applying an ice/water-bath and dropwise addition of MsOH (17.55 mL, 270 mmol). Subsequently, 3-buten-1-ol (2.79 mL, 32.4 mmol) was added dropwise. The RM was stirred at 0° C. for 1.5 h. Sat. aq. Na2CO3 (400 mL) was immersed in an ice/water-bath. The RM was transferred into a separation funnel and added dropwise to the stirred and chilled Na2CO3-solution. The temperature was kept below 15° C. Subsequently, DCM (125 mL) and H2O (100 mL) were added, followed by separation of the phases. The aq. layer was extracted with DCM (2×50 mL). The combination of organic layers was washed with sat. aq. NaHCO3 (50 mL), dried (brine twice & Na2SO4) and concentrated to yield 8.76 g (97%) of the desired product.
Step 2: 2-(4-Bromophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran
A solution of 2-(4-bromophenyl)tetrahydro-2H-pyran-4-yl methanesulfonate (8.71 g, 26.0 mmol) in dry MeCN (250 mL) was degassed by N2 bubbling for 1 h. K2CO3 (6.10 g, 44.2 mmol) was added, followed by 3-(trifluoromethyl)benzenethiol (5.87 mL, 44.2 mmol). The RM was stirred at 50° C. overnight. Addition of EtOAc (75 mL) and silica (7 g) was followed by filtration over a cotton plug. The residue was washed with EtOAc (2×75 mL), the combination of filtrates was concentrated. The residue was mixed with DCM (100 mL), silica (40 g) was added, the mixture was concentrated. The residue was eluated with EtOAc (200 mL), followed by concentration. The residue was mixed with DCM (3 mL) and used for flash chromatography (silica, gradient heptane/EtOAc, 1:0 to 96:4) to result in 7.37 g (68%) of the desired product.
Step 3: 2-(4-Bromophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
2-(4-Bromophenyl)-4-((3-(trifluoromethyl)phenyl)thio)tetrahydro-2H-pyran (7.34 g, 17.59 mmol) was dissolved in MeOH (180 mL). Oxone (23.79 g, min. 66.9 mmol) was almost completely dissolved in H2O (90 mL), the turbid solution was added portionwise. The RM was stirred vigorously at RT overnight. Addition of MeOH (40 mL) was followed by addition of a solution of oxone (5.41 g, min. 15.2 mmol) in H2O (20 mL). The RM was stirred vigorously at RT for 3 h. The major part of the MeOH was removed from the RM by rotary evaporation at 40° C. H2O (500 mL) and EtOAc (400 mL) were added to result in a clear two phase system. The layers were separated, the aq. layer was extracted with EtOAc (100 mL). The combination of organic layers was washed with sat. aq. NaHCO3 (100 mL), dried (brine and Na2SO4) and concentrated. The residue was dissolved in DCM (20 mL), followed by addition of MeOH (100 mL) and concentration to around 80 mL. The residual suspension was heated to reflux, addition of MeOH (30 mL) resulted in a solution, cooling to RT started crystallisation. Filtration, washing with MeOH (3×20 mL) and drying by suction provided 4.74 g (60%) of the desired product.
Step 4: 2-(4-Bromophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran
A solution of 2-(4-bromophenyl)-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.70 g, 3.78 mmol) in dry THF (20 mL) was prepared, the temperature was lowered to −78° C. A 1.7 M solution of KOt-Bu in THF (3.34 mL, 5.68 mmol) was added dropwise and the RM was stirred for 10 min. Dropwise addition of MeI (0.473 mL, 7.57 mmol) was followed by stirring the RM at −78° C. The flask was left in the cooling bath. Consequently, the temperature was kept at −78° C. for a few hours, followed by slow raise to RT and stirring overnight at RT. The RM was combined with aq. 1 M KHSO4 (100 mL) and EtOAc (120 mL) to result in a two phase system. The layers were separated, the aq. layer was extracted with EtOAc (25 mL). The combination of organic layers was washed with aq. 1 M Na2S2O3 (30 mL), sat. aq. NaHCO3 (50 mL) and dried (brine and Na2SO4), followed by concentration. The residue was dissolved in DCM (5 mL) and added to i-PrOH (50 mL). The solution was concentrated to around 25 mL to result in a suspension. Heating to reflux resulted in a solution, cooling to RT started crystallisation. Filtration and drying by suction provided an impure batch. A second crystallisation from i-PrOH (35 mL) resulted in 1.20 g (68%) of the desired product.
Step 5: 2-[4-(Cyclopropylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran
A flask was charged with 2-(4-bromophenyl)-4-methyl-4-((3-(trifluoromethyl)phenyl)sulfonyl)tetrahydro-2H-pyran (1.20 g, 2.59 mmol), sodium cyclopropanesulfinate (0.664 g, 5.18 mmol), 90% (w/w) [CF3SO3Cu]2 benzene (0.724 g, 1.295 mmol), K2CO3 (0.788 g, 5.70 mmol), degassed DMSO (13 mL) and N,N′-dimethylethylenediamine (0.335 mL, 3.11 mmol). The RM was stirred at 100° C. overnight and subsequently combined with H2O (120 mL), aq. 1 M KHSO4 (50 mL) and EtOAc (50 mL). Filtration over a cotton plug provided a clear two phase system. The layers were separated, the aq. layer was extracted with EtOAc (25 mL). The combination of organic layers was washed with H2O (50 mL), aq. 5% (w/w) Na4EDTA (50 mL), sat. aq. NaHCO3, dried (brine and Na2SO4) and concentrated. The residue was dissolved in DCM (2 mL), addition of MeOH (20 mL) was followed by concentration. The residue was dissolved in MeOH (50 mL) at reflux. Cooling to RT started crystallisation. Filtration and drying by suction provided 0.91 g (71%) of [cis-rac] 2-[4-(cyclopropyl-sulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran SC-349.
1H-NMR (400 MHz, CDCl3) of [cis-rac] 2-[4-(cyclopropylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran SC-349: δ 8.13 (s, 1H), 8.05 (d, J=7.9 Hz, 1H), 7.96 (d, J=7.5 Hz, 1H), 7.89 (d, J=8.3 Hz, 2H), 7.75 (t, J=7.8 Hz, 1H), 7.51 (d, J=8.3 Hz, 2H), 4.58-4.50 (m, 1H), 4.21 (dd, J=11.7, 4.8 Hz, 1H), 3.72 (td, J=12.4, 2.0 Hz, 1H), 2.50-2.33 (m, 2H), 2.15 (t, J=12.3 Hz, 1H), 1.86-1.77 (m, 1H), 1.67-1.50 (m, 6H+H2O), 1.40-1.32 (m, 2H), 1.08-0.99 (m, 2H).
Analytical Data:
Material and Methods for LC/MS Analytics:
Hardware: Coupled Agilent 1290 Infinity UHPLC-TOF System; LC-Module: MTP-Handler: Agilent, Model BenchCel 2R; Themostatic Control Autoinjector: Agilent, Modell G4226A; Column oven: Agilent, Model G1316C; DAD: Agilent, Model G4212A; Binary Pump: Agilent, Model G4220A; Time Of Flight Mass Spectrometer: Agilent 6224; Ion source: Dual ESI; Column: Supplier: Waters; Type: Acquity UPLC HSS T3 1.8 μm (Part No. 186003538); Dimensions: 2.1×50 mm; Eluents: Eluent A: Water from Millipore Ultrapure water System: Milli-Q Integral 3+0.1% Formic acid; Eluent B: Acetonitrile, Merck KGaA: LiChrosolv Hypergrade for LC-MS (1.00029.9010)+0.1% Formic acid; Formic acid: Merck KGaA: Suprapure 98-100% (1.11670.1000); LC-Method: Flow: 2.5 mL/min; Runtime: 1.2 min; Gradient: Start 2% B, 1 min 100% B, 1.09 min 100% B, 1.11 min 2% B, 1.2 min 2% B Stop; Columntemperature: 80° C.; UV: 190-400 nm; MS-Method: Ion Polarity: Positive; Gas Temperature: 325° C.; Gas Flow: 10 mL/min. The following tables summarize the analytical results.






















Target




Ex.
cis/
Cpd
Target
Mass
UV254- 



No.
trans
No.
Mass
Found
purity























1
cis
SC-100
404.046
Yes
100



1
cis
SC-101
404.046
Yes
100



1
trans
SC-102
404.046
Yes
100



1
trans
SC-103
404.046
Yes
100



2
cis
SC-104
419.057
Yes
87



2
cis
SC-105
419.057
Yes
100



2
trans
SC-106
419.057
Yes
98



2
trans
SC-107
419.057
Yes
98



3
trans
SC-108
418.062
Yes
100



3
trans
SC-109
418.062
Yes
100



4
cis
SC-110
432.077
Yes
100



4
cis
SC-111
432.077
Yes
100



5
cis
SC-112
462.078
Yes
90



5
cis
SC-113
462.078
Yes
100



6
cis
SC-114
496.039
Yes
100



6
cis
SC-115
496.039
Yes
100



7
cis
SC-116
418.062
Yes
100



8
trans
SC-117
418.062
Yes
91



9
cis
SC-118
446.093
Yes
97



9
cis
SC-119
446.093
Yes
100



10
cis
SC-120
418.062
Yes
94



10
trans
SC-121
418.062
Yes
95



10
trans
SC-122
418.062
Yes
99



11
cis
SC-200
476.094
Yes
100



11
cis
SC-201
476.094
Yes
100



12
cis
SC-202
530.066
Yes
93



12
cis
SC-203
530.066
Yes
100



13
cis
SC-204
480.069
Yes
100



13
cis
SC -205
480.069
Yes
100



14
cis
SC-206
476.094
Yes
100



14
cis
SC-207
476.094
Yes
100



15
cis
SC-208
480.069
Yes
91



15
cis
SC-209
480.069
Yes
96



16
cis
SC-210
476.094
Yes
100



16
cis
SC-211
476.094
Yes
86



17
cis
SC-212
480.069
Yes
92



17
cis
SC-213
480.069
Yes
100



18
cis
SC-214
461.104
Yes
100



18
cis
SC-215
461.104
Yes
100



19
cis
SC-216
448.072
Yes
64



19
cis
SC-217
448.072
Yes
100



20
cis
SC-218
496.039
Yes
98



20
cis
SC-219
496.039
Yes
100



21
cis
SC-220
462.078
Yes
100



21
cis
SC-221
462.078
Yes
100



22
cis
SC-222
462.078
Yes
96



22
cis
SC-223
462.078
Yes
100



23
cis
SC-224
432.077
Yes
91



23
cis
SC-225
432.077
Yes
93



24
cis
SC-226
448.072
Yes
95



24
cis
SC-227
448.072
Yes
99



25
cis
SC-228
436.052
Yes
100



25
cis
SC-229
436.052
Yes
98



26
cis
SC-230
432.077
Yes
89



26
cis
SC-231
432.077
Yes
85



27
cis
SC-232
530.066 
Yes
100



28
cis
SC-234
524.104 
Yes
100



29
cis
SC-235
530.066 
Yes
100



29
cis
SC-236
530.066 
Yes
100



30
cis
SC-237
496.039 
Yes
100



30
cis
SC-238
496.039 
Yes
100



31
cis
SC-239
496.039
Yes
100



31
cis
SC-240
496.039 
Yes
100



32
cis
SC-241
480.069
Yes
100



32
cis
SC-242
480.069 
Yes
100



33
cis
SC-243
496.039
Yes
100



33
cis
SC-244 
496.039 
Yes
100



34
cis
SC-300
446.093 
Yes
100



34
cis
SC-301
446.093 
Yes
98



34
trans 
SC-302
446.093 
Yes
98



35
cis
SC-303 
436.052
Yes
100



35
cis
SC-304
436.052 
Yes
100



35
trans 
SC-305
436.052 
Yes
98



36
cis
SC-306
362.116 
Yes
100



36
cis
SC-307
362.116 
Yes
100



36
trans
SC-308
362.116 
Yes
69



37
cis
SC-309
418.062 
Yes
100



37
cis
SC-310
418.062 
Yes
98



37
trans
SC-311
418.062 
Yes
100



37
trans
SC-312
418.062
Yes
100



38
cis
SC-313
434.057
Yes
100



38
cis
SC-314
434.057
Yes
100



38
trans
SC-315
434.057
Yes
100



39
cis
SC-401
404.046
Yes
99



39
trans
SC-402
404.046
Yes
89



40
Cis
SC-127
448.072
Yes
100



40
Cis
SC-128
448.072
Yes
100



41
Cis
SC-130
432.077
Yes
100



41
Cis
SC-131
432.077
Yes
100



42
Cis
SC-132
540.056
Yes
100



42
Cis
SC-133
540.056
Yes
100



43
Cis
SC-134
451.118
Yes
100



43
Cis
SC-135
451.118
Yes
100



44
Cis
SC-136
427.086
Yes
96



44
Cis
SC-137
427.086
Yes
89



45
Cis
SC-138
445.097
Yes
100



45
Cis
SC-139
445.097
Yes
91



46 
Trans
SC-140
418.062
Yes
86



46 
Trans
SC-141
418.062
Yes
90



47
Cis
SC-142
480.069
Yes
100



47
Cis
SC-143
480.069
Yes
100



48
Cis
SC-144
480.069
Yes
100



49
Cis
SC-148
510.079
Yes
100 



49
Cis
SC-149
510.079
Yes
100 



50
Cis
SC-150
510.079
Yes
100



50
Cis
SC-151
510.079
Yes
100



51
Cis
SC-245
481.064
Yes
100 



51
Cis
SC-246
481.064
Yes
100



52
Cis
SC-247
496.039
Yes
100



52
Cis
SC-248
496.039
Yes
100



53
Cis
SC-249
530.066
Yes
100



53
Cis
SC-250
530.066
Yes
100



54
Cis
SC-251
487.073
Yes
100



54
Cis
SC-252
487.073
Yes
100



55
Cis
SC-253
476.094
Yes
100



55
Cis
SC-254
476.094
Yes
100



56
Cis
SC-255
530.066
Yes
98



56
Cis
SC-256
530.066
Yes
100



57
Cis
SC-257
487.073
Yes
100



57
Cis
SC-258
487.073
Yes
100



58
Cis
SC-259
464.072
Yes
100



58
Cis
SC-260
464.072
Yes
100



59
Cis
SC-261
487.073
Yes
95



59
Cis
SC-262 
487.073
Yes 
96



60
Cis
SC-263 
426.111
Yes
100



60
Cis
SC-264 
426.111
Yes
100



61
Cis
SC-265 
496.064
Yes
100



61
Cis
SC-266 
496.064
Yes
100



62
Cis
SC-267
487.073
Yes
100



62
Cis
SC-268
487.073 
Yes
100



63
Cis
SC-269
462.078 
Yes
93



63
Cis
SC-270
462.078 
Yes
100



64
Cis
SC-271
454.128 
Yes
100



64
Cis
SC-272
454.128 
Yes
100



65
Cis
SC-273
487.073 
Yes
100



65
Cis
SC-274
487.073 
Yes
100



66
Cis
SC-275
487.073 
Yes
100



66
Cis
SC-276
487.073 
Yes
100



67
Cis
SC-277
502.110 
Yes
100



67
Cis
SC-278
502.110 
Yes
100



68
Cis
SC-279
439.106
Yes
100



68
Cis
SC-280
439.106 
Yes
100



69
Cis
SC-281
464.074 
Yes
100



69
Cis
SC-282
464.074 
Yes
100



69
Cis
SC-283
464.074 
Yes
100



69
Cis
SC-284 
464.074
Yes
100



70

SC-285 
453.122
Yes
100



71
Cis
SC-286
492.089
Yes
100



71
Cis
SC-287 
492.089
Yes
100



72
Cis
SC-288 
480.044
Yes
100



72
Cis
SC-289 
480.044
Yes
100



72
Cis
SC-290 
480.044
Yes
100



72
Cis
SC-291
480.044
Yes
100



73
Cis
SC-292
463.073
Yes
93



73
Cis
SC-293
463.073
Yes
100



74
Cis
SC-294
480.069 
Yes
100



74
Cis
SC-295
480.069 
Yes
100



75
Cis
SC-296
480.069 
Yes
100



75
Cis
SC-297
480.069 
Yes
100



76
Cis
SC-500
470.123 
Yes
100



76
Cis
SC-501
470.123 
Yes
100



77
Cis
SC-502
496.064 
Yes
98



77
Cis
SC-503 
496.064 
Yes
100



77
Trans 
SC-504 
496.064 
Yes
97



78
Trans
SC-505
454.128 
Yes
100



78
Cis
SC-506
454.128 
Yes
100



78
Cis
SC-507 
454.128 
Yes
100



79
Trans 
SC-508 
462.078 
Yes
98



79
Cis
SC-509
462.078 
Yes
100



79
Cis
SC-510
462.078 
Yes
97



76
Trans
SC-511
470.123 
Yes
100



80
Cis
SC-512 
452.113
Yes
100



80
Cis
SC-513
452.113 
Yes
100



80 
Trans
SC-514
452.113 
Yes
100



81 
Trans
SC-515
498.059 
Yes
100



82
Cis 
SC-516 
478.073
Yes
100



82
Cis 
SC-517 
478.073
Yes
100



81
Cis 
SC-518 
498.059
Yes
100



81
Cis
SC-519
498.059 
Yes
100



82 
Trans
SC-520
478.073 
Yes
100



83
cis
SC-349
488.094 
Yes
100










2. Assay Descriptions and Biological Data
2.1 Fluorescence Assay for CaV2.2 Channels Using Potassium Depolarization to Induce Channel Opening
Human CaV2.2 channels were stably expressed in HEK293 cells together with alpha2-delta and beta subunits of voltage gated calcium channels. In addition, an inwardly rectifying potassium channel (Kir2.3) was stably expressed in these cells to augment control of the cell membrane potential by the concentration of extracellular potassium ions. Raise of the extracellular potassium concentration leads to depolarization of the membrane potential and thus regulates the voltage dependent state of CaV2.2 channels. For preparation, cells were seeded in black poly-D-lysine coated 96-well plates (Becton Dickinson, Biocoat 4640) in 100 μL medium [500 mL DMEM/F-12 plus Glutamax (Invitrogen 31331-093) plus 5.5 mL MEM NEAA 100× (Invitrogen 11140-035) plus 50 mL FBS decomplemented (Invitrogen 10270-106) plus 200 μg/mL Geneticin (Invitrogen 10131-027) plus 50 μg/mL Hygromycin B (Invitrogen 10687-010) plus 2 μg/mL Blasticidin (anti-bl5b Invivo-Gen) plus 0.2 μg/mL Puromycin (A 11138-03)] at a cell density of 30.000 cells per well. Plates were incubated at 37° C. (5% CO2) for 20 to 23 h. On the day of experiment medium was discarded and cells were loaded with Fluo 4 by addition of 100 μL of basic assay buffer (10 mM HEPES, 1 mM KCl, 149 mM NaCl, 0.8 mM CaCl2, 1.7 mM MgCl2, 10 mM Glucose, 0.1% BSA. pH 7.4) containing 2 μM Fluo 4 (Molecular Probes; F-14201), 0.01% pluronic acid (Molecular Probes; P-6866) and 2.5 mM probenecid (Molecular Probes; P36400). Cells were incubated in the dark at 25° C. for 60 min. Then dye containing buffer was discarded and 100 μL basic (1 mM KCl) or alternative (30 mM KCl) assay buffer was added. The alternative assay buffer contained altered concentrations of KCl (30 mM) and NaCl (120 mM) and was used in order to promote the inactivated channel state. After that 25 μL of basic or alternative assay buffer with or without test compound were added and cells were incubated again in the dark at 25° C. for 15 min. Fluorescence intensity was measured on a FLIPR 3 instrument (Molecular Devices Corp., Sunnyvale, Calif.) with excitation at 480 nm and emission at 535 nm. After continuously reading fluorescence for 30 sec, 50 μL of basic assay buffer containing 210 mM KCl (NaCl omitted) were added for depolarization. Peak fluorescent signal intensity was determined and the amplitude of the peak signal, normalized to base line, was used to measure channel inhibition by test compounds.
The following tables summarize the inhibitory activity of exemplified compounds according to the present invention.














Cpd
Activity 



No.
Category









SC-
B



100




SC-
A



101




SC-
B



102




SC-
A



103




SC-
B



104




SC-
A



105




SC-
B



106




SC-
B



107




SC-
B



108




SC-
B



109




SC-
B



110




SC-
C



111




SC-
A



112




SC-
B



113




SC-
B



114




SC-
A



115




SC-
C



116




SC-
A



117




SC-
C



118




SC-
C



119




SC-
B



120




SC-
B



121




SC-
B



122




SC-
A



127




SC-
A



128




SC-
B



130




SC-
B



131




SC-
B



132




SC-
A



133




SC-
B



134




SC-
A



135




SC-
A



136




SC-
A



137




SC-
C



138




SC-
B



139




SC-
B



140




SC-
A



141




SC-
B



142




SC-
B



143




SC-
A



144




SC-
B



148




SC-
A



149




SC-
B



150




SC-
A



151




SC-
B



200




SC-
B



201




SC-
A



202




SC-
A



203




SC-
A



204




SC-
B



205




SC-
A



206




SC-
A



207




SC-
A



208




SC-
B



209




SC-
A



210




SC-
A



211




SC-
A



212




SC-
B



213




SC-
A



214




SC-
C



215




SC-
B



216




SC-
C



217




SC-
A



218




SC-
A



219




SC-
B



220




SC-
B



221




SC-
A



222




SC-
C



223




SC-
B



224




SC-
A



225




SC-
A



226




SC-
A



227




SC-
A



228




SC-
A



229




SC-
A



230




SC-
B



231




SC-
A



232




SC-
A



235




SC-
A



236




SC-
A



237




SC-
A



238




SC-
A



239




SC-
A



240




SC-
A



241




SC-
A



242




SC-
A



243




SC-
A



244




SC-
C



245




SC-
C



246




SC-
A



247




SC-
A



248




SC-
A



249




SC-
A



250




SC-
A



251




SC-
B



252




SC-
B



253




SC-
A



254




SC-
A



255




SC-
A



256




SC-
B



257




SC-
B



258




SC-
A



259




SC-
A



260




SC-
A



261




SC-
B



262




SC-
A



263




SC-
A



264




SC-
B



265




SC-
A



266




SC-
A



267




SC-
B



268




SC-
C



269




SC-
B



270




SC-
A



271




SC-
A



272




SC-
B



273




SC-
B



274




SC-
B



275




SC-
A



276




SC-
A



277




SC-
B



278




SC-
B



279




SC-
A



280




SC-
B



281




SC-
B



282




SC-
B



283




SC-
C



284




SC-
B



285




SC-
B



286




SC-
B



287




SC-
B



288




SC-
C



289




SC-
B



290




SC-
A



291




SC-
C



293




SC-
B



294




SC-
B



295




SC-
B



296




SC-
A



297




SC-
A



300




SC-
B



301




SC-
B



302




SC-
B



303




SC-
A



304




SC-
B



305




SC-
C



306




SC-
C



307




SC-
A



310




SC-
A



311




SC-
B



312




SC-
A



313




SC-
A



314




SC-
A



315




SC-
B



401




SC-
A



402




SC-
B



500




SC-
B



501




SC-
A



502




SC-
A



503




SC-
A



504




SC-
A



505




SC-
A



506




SC-
A



507




SC-
B



508




SC-
B



509




SC-
A



510




SC-
B



511




SC-
B



512




SC-
A



513




SC-
A



514




SC-
A



515




SC-
C



516




SC-
B



517




SC-
B



518




SC-
A



519




SC-
B



520




SC-
B



517




SC-
B



518




SC-
A



519




SC-
B



520




SC-
B



517




SC-
B



518




SC-
A



519







*%-Inhib (CaV2.2) @3 μM @30 mM KCl: “A”: %-Inhibition >95%; “B”: %-Inhibition >75% up to ≦95%; “C”: %-Inhibition >40% up to ≦75%, “D”: %-Inhibition >30% up to ≦40%.






2.2 Electrophysiological Assessment of Calcium Channel Activity
Patch-clamp recordings were performed using HEK293 cells stably expressing human Cav2.2. Cells were plated in T150 flasks and grown a humidified incubator at 37° C. and under 5% CO2 to approximately 50-60% confluency. Cells were maintained at 30° C. for 48 hrs prior to recording. On the day of the experiment, cells were harvested with TrypLE cell detachment solution (Invitrogen) diluted to 25% with phosphate buffered saline and maintained in 50% cell culture media, 50% NaCl based external saline (in mM, 140 NaCl, 4 KCl, 1 MgCl2, 2 CaCl2, 5 Glucose, 10 HEPES, pH 7.4) up to several hours prior to experiment.
Currents were recorded at RT (21-23° C.) using the Patchliner planar array technology (Nanion). Patchliner is a multi-well whole-cell automated patch clamp device that operates asynchronously with fully integrated fluidics. Capacitance and series resistance compensation was automated and no correction for liquid junction potential was employed. Leak was subtracted on-line. Whole-cell patch-clamp recordings were obtained using extracellular saline consisting of (mM): 145 TEA-CI, 10 BaCl2, 10 HEPES, 10 Glucose. The pH was adjusted to 7.35 with NaOH and the osmolarity was adjusted to 310 mOsm with sucrose. Intracellular solution consisted of (mM): 50 CsCl, 60 CsF, 10 NaCl, 20 EGTA, 5 BAPTA, 10 HEPES. Prior to an experiment, 5 mM MgATP and 0.3 NaGTP were added, the pH was adjusted to 7.2 with CsOH and the osmolarity was adjusted to 290 mOsm with sucrose.
A voltage pulse protocol was utilised to assess compound inhibition. Cells were held at a holding potential of −60 mV and channels were activated using a 10 ms test pulse to +30 mV activated every 10 seconds (0.1 Hz). Increasing concentrations of compound were applied to individual cells with 5 minutes at each test concentration. Compounds were prepared in DMSO as 10 mM stock solutions and subsequent 1:3 serial dilutions performed. Final dilution of 1:1000 in external solution resulted in a final DMSO concentration of 0.1%. For each cell, current responses were normalised to dimethyl sulfoxide vehicle control to generate concentration-response curves. When multiple doses were achieved per cell, IC50 values were calculated from the fits of the Hill equation to the data. The form of the Hill equation used was: Relative current=(100/(1+(IC50/conc)^Slope)). A selection of the foregoing exemplified compounds was tested under these conditions: Several compounds are potent inhibitors (IC50<5 μM) or even very potent inhibitors (IC50<2 μM).

## Claims

1. A compound of formula (I),




wherein
m represents 0, 1 or 2;
n denotes 0 or 1;
wherein one of m or n is at least 1;
Y is selected from the group consisting of bond and —C(R3)2—;
wherein each R3 is independently selected from the group consisting of H and C1-6-alkyl, or two R3 form together with the C-atom connecting them a C3-10-cycloalkyl or a 3 to 7 membered heterocyclyl;

L is —[C(R4)2]x—(X)y—[C(R4)2]z,
wherein x is 0, 1 or 2, y is 0 or 1 and z is 0 or 1, with the proviso that x≧y;
each R4 is independently selected from the group consisting of H and C1-6-alkyl,
or two R4 form together with the C-atom connecting them a C3-10-cycloalkyl or a 3 to 7 membered heterocyclyl or two R4 form together with two adjacent C-atoms connecting them a C3-10-cycloalkyl or a 3 to 7 membered heterocyclyl,
X is selected from the group consisting of O, S, S(O)2, N(H) or N(C1-6-alkyl);

R1 is selected from the group consisting of H; F; Cl; CN; C1-6-alkyl; C1-6-alkyl-O(R5) and C1-6-alkyl-N(R5)2;
wherein each R5 is independently selected from H or C1-6-alkyl or two R5 form together with the N-atom connecting them a 3 to 7 membered heterocyclyl;

R2 is selected from the group consisting of H; F; Cl; CN; C1-6-alkyl; C1-6-alkyl-O(R6) and C1-6-alkyl-N(R6)2;
wherein each R6 is independently selected from H or C1-6-alkyl or two R6 form together with the N-atom connecting them a 3 to 7 membered heterocyclyl;

Ar1 represents aryl or heteroaryl, wherein said aryl or said heteroaryl is substituted by zero or one or two or three substituents R7,
Ar2 represents aryl or C3-10-cycloalkyl, wherein said aryl or said C3-10-cycloalkyl is substituted by zero or one or two or three substituents R8,
wherein each R7 and each R8 is independently selected from the group consisting of F; Cl; Br; I; NO2; CN; C1-6-alkyl; CF3; CF2H; CFH2; CF2Cl; CFCl2; C(═O)—H; C(═O)—C1-6-alkyl; C(═O)—OH; C(═O)—O—C1-6-alkyl; C(═O)—N(H)(OH); C(═O)—NH2; C(═O)—N(H)(C1-6-alkyl); C(═O)—N(C1-6-alkyl)2; C(═N—OH)—H; C(═N—OH)—C1-6-alkyl; C(═N—O—C1-6-alkyl)-H; C(═N—O—C1-6-alkyl)-C1-6-alkyl; OH; OCF3; OCF2H; OCFH2; OCF2Cl; OCFCl2; O—C1-6-alkyl; O—C(═O)—C1-6-alkyl; O—C(═O)—O—C1-6-alkyl; O—(C═O)—N(H)(C1-6-alkyl); O—C(═O)—N(C1-6-alkyl)2; O—S(═O)2—C1-6-alkyl; O—S(═O)2—OH; O—S(═O)2—O—C1-6-alkyl; O—S(═O)2—NH2; O—S(═O)2—N(H)(C1-6-alkyl); O—S(═O)2—N(C1-6-alkyl)2; NH2; N(H)(C1-6-alkyl); N(C1-6-alkyl)2; N(H)—C(═O)—C1-6-alkyl; N(H)—C(═O)—O—C1-6-alkyl; N(H)—C(═O)—NH2; N(H)—C(═O)—N(H)(C1-6-alkyl); N(H)—C(═O)—N(C1-6-alkyl)2; N(C1-6-alkyl)-C(═O)—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—O—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—NH2; N(C1-6-alkyl)-C(═O)—N(H)(C1-6-alkyl); N(C1-6-alkyl)-C(═O)—N(C1-6-alkyl)2; N(H)—S(═O)2OH; N(H)—S(═O)2—C1-6-alkyl; N(H)—S(═O)2—O—C1-6-alkyl; N(H)—S(═O)2—NH2; N(H)—S(═O)2—N(H)(C1-6-alkyl); N(H)—S(═O)2N(C1-6-alkyl)2; N(C1-6-alkyl)-S(═O)2—OH; N(C1-6-alkyl)-S(═O)2—C1-6-alkyl; N(C1-6-alkyl)-S(═O)2—O—C1-6-alkyl; N(C1-6-alkyl)-S(═O)2—NH2; N(C1-6-alkyl)-S(═O)2—N(H)(C1-6-alkyl); N(C1-6-alkyl)-S(═O)2—N(C1-6-alkyl)2; SH; SCF3; SCF2H; SCFH2; SCF2Cl; SCFCl2; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; S(═O)2—OH; S(═O)2—O—C1-6-alkyl; S(═O)2—NH2; S(═O)2—N(H)(C1-6-alkyl); S(═O)2—N(C1-6-alkyl)2; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; aryl; heteroaryl; O—C3-10-cycloalkyl; O-(3 to 7 membered heterocyclyl); O-aryl; O-heteroaryl; C(═O)—C3-10-cycloalkyl; C(═O)-(3 to 7 membered heterocyclyl); C(═O)-aryl; C(═O)-heteroaryl; S(═O)2—C3-10-cycloalkyl; S(═O)2-(3 to 7 membered heterocyclyl); S(═O)2-aryl; S(═O)2-heteroaryl; S(═O)(═NR13)—C3-10-cycloalkyl; S(═O)(═NR13)-(3 to 7 membered heterocyclyl); S(═O)(═NR13)-aryl and S(═O)(═NR13)-heteroaryl, wherein R13 represents H or C1-6-alkyl;

wherein in each case said C1-6-alkyl may be branched or unbranched; unsubstituted or mono- or polysubstituted; and
wherein in each case said C3-10-cycloalkyl, 3 to 7 membered heterocyclyl aryl and heteroaryl may be unsubstituted or mono- or polysubstituted;
optionally in the form of a single stereoisomer or a mixture of stereoisomers, in form of the free compound and/or a physiologically acceptable salt and/or a physiologically acceptable solvate thereof.

2. A compound according to claim, wherein the compound of formula (I) is a compound according to formula (II),




or formula (IIa) or (IIb),




wherein each Ar1, Ar2, R1, R2, Y and L are defined according to claim 1.

3. A compound according to claim 1, wherein the compound of formula (I) is one diastereomer.

4. A compound according to claim 3, wherein the compound of formula (I) is one enantiomer.

5. A compound according to claim 1, wherein
R2 represents H, CH3, C2H5, CH2CH2CH3, CH(CH3)2, CH2OH, CH2OCH3, CH2NH2, CH2N(H)CH3 or CH2N(CH3)2.

6. A compound according to claim 1, wherein
R1 represents H, CH3, C2H5, CH2CH2CH3, CH(CH3)2, CH2OH, CH2OCH3, CH2NH2, CH2N(H)CH3 or CH2N(CH3)2.

7. A compound according to claim 1, wherein Ar1 represents phenyl or pyridinyl, substituted by zero or one or two or three substituents R7,
wherein each R7 is independently selected from the group consisting of F; Cl; CN; C1-6-alkyl; CF3; CF2H; CFH2; C(═O)—C1-6-alkyl; C(═O)—OH; C(═O)—O—C1-6-alkyl; C(═O)—N(H)(OH); C(═O)—NH2; C(═O)—N(H)(C1-6-alkyl); C(═O)—N(C1-6-alkyl)2; OH; OCF3; OCF2H; OCFH2; OCF2Cl; OCFCl2; O—C1-6-alkyl; NH2; N(H)(C1-6-alkyl); N(C1-6-alkyl)2; N(H)—C(═O)—C1-6-alkyl; N(C1-6-alkyl)-C(═O)—C1-6-alkyl; N(H)—S(═O)2—C1-6-alkyl; SCF3; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; S(═O)2—NH2; S(═O)2—N(H)(C1-6-alkyl); S(═O)2—N(C1-6-alkyl)2; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; O—C3-10-cycloalkyl and O-(3 to 7 membered heterocyclyl).

8. A compound according to claim 1, wherein Ar1 is represented by subformula SF-I



wherein
X is CH or N,
R10 is selected from the group consisting of CF3; CF2H; CFH2; OCF3; OCF2H and OCFH2;
and R11 is selected from the group consisting of H; F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CH(CH3)CH2CH3; CH2CH2CH2CH3; CH2CH(CH3)2; C(CH3)3; CF3; CF2H; CFH2; OCF3; OCH3; OCH2CH3; OCH(CH3)2; S(═O)—CH3 and S(═O)2—CH3.

9. A compound according to claim 1, wherein L is bond, CH2; C(CH3)2; CH(CH3); CH2CH2; CH2C(CH3)2; C(CH3)2CH2; CH2O; C(CH3)20; CH(CH3)O;

10. A compound according to claim 1, wherein Ar2 represents phenyl, substituted by one or two substituents R8,
wherein each R8 is independently selected from the group consisting of F; Cl; CN; C1-6-alkyl; CF3; CF2H; CFH2; OCF3; OCF2H; OCFH2; O—C1-6-alkyl; S—C1-6-alkyl; S(═O)—C1-6-alkyl; S(═O)2—C1-6-alkyl; C3-10-cycloalkyl; 3 to 7 membered heterocyclyl; aryl; heteroaryl; O—C3-10-cycloalkyl; O-(3 to 7 membered heterocyclyl); O-aryl; O-heteroaryl; C(═O)—C3-10-cycloalkyl; C(═O)-(3 to 7 membered heterocyclyl); C(═O)-aryl; C(═O)-heteroaryl; S(═O)2—C3-10-cycloalkyl; S(═O)2-(3 to 7 membered heterocyclyl); S(═O)2-aryl; S(═O)2-heteroaryl; S(═O)(═NR13)—C3-10-cycloalkyl; S(═O)(═NR13)-(3 to 7 membered heterocyclyl); S(═O)(═NR13)-aryl and S(═O)(═NR13)-heteroaryl, wherein R13 represents H or C1-6-alkyl.

11. A compound according to claim 1, wherein Ar2 is represented by subformula SF-II



wherein
R12 is selected from the group consisting of H; F; Cl; CN; CH3; CH2CH3; CH2CH2CH3; CH(CH3)2; CF3; CF2H; CFH2; OCF3; OCH3; OCH2CH3; OCH(CH3)2; cyclopropyl and O-cyclopropyl.

12. A pharmaceutical composition comprising at least one compound according to claim 1.

13. A compound selected from the group consisting of:
2-[[2-(4-Chlorophenyl)-4-methyl-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoro-methyl)-pyridine;
2-(4-Chlorophenyl)-4-[[2-methyl-5-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chlorophenyl)-4-[[2-ethyl-5-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran;
4-Methyl-2-(4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chloro-2-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
2-(4-Chlorophenyl)-5-methyl-5-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chlorophenyl)-2-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chlorophenyl)-4-[[2-isopropyl-5-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran;
3-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
4-Methyl-2-(2-methyl-5-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
4-Methyl-2-[3-methylsulfonyl-5-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran;
2-(5-Fluoro-2-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
4-Methyl-2-(3-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
4-Methyl-2-(4-methyl-3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
2-(4-Fluoro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
[[2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-4-yl]-methyl]-dimethyl-amine;
2-(4-Chlorophenyl)-4-(methoxymethyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(2-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
4-Methyl-2-(3-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
4-Methyl-2-(2-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chloro-2-methyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chloro-3-methoxy-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(3-Chloro-4-fluoro-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chlorophenyl)-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
4-Methyl-2-[2-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chlorophenyl)-4-(phenylmethoxy-methyl)-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
4-Methyl-2-[4-methylsulfonyl-3-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chloro-3-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
2-(3-Chloro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
2-(3-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]-sulfonyl]-tetrahydro-pyran;
6-(4-Chlorophenyl)-2,2,4-trimethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetra-hydro-pyran;
2-(4-Chlorophenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran;
2-Cyclopropyl-4-ethyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(4-Chlorophenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetra-hydro-pyran;
2-(4-Chlorophenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-[(4-Chloro-phenoxy)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-[(4-Chlorophenyl)-methyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-[3,4-Bis(methylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
1-[4-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-phenyl]-1H-[1,2,4]triazole;
2-Fluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile;
2-Fluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzamide;
2-(4-Chlorophenyl)-2-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
4-[[3-Fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran;
2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-[(2-Fluoro-4-methylsulfonyl-phenoxy)-methyl]-4-methyl-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran;
2-[(3-Fluoro-4-methylsulfonyl-phenoxy)-methyl]-4-methyl-4-[[3-(trifluoromethyl)-phenyl]sulfonyl]-tetrahydro-pyran;
2-[[2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine;
2-(2-Chloro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
4-Methyl-2-[3-methylsulfonyl-4-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
3-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile;
4-Methyl-2-(2-methyl-4-methylsulfonyl-phenyl)-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
4-Methyl-2-[4-methylsulfonyl-2-(trifluoromethyl)-phenyl]-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
3-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile;
2,2-Difluoro-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-1,3-benzodioxole;
2-Methylsulfonyl-4-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile;
5-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-2,3-dihydro-benzofuran;
2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran;
2-Methylsulfonyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile;
4-[[3-(Difluoro-methyl)-phenyl]sulfonyl]-2-(3-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran;
2-(3-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropyl-phenyl) sulfonyl]-4-methyl-tetrahydro-pyran;
4-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile;
5-Methylsulfonyl-2-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzonitrile;
2-(2-Cyclopropyl-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-Methyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole;
2-[2-Fluoro-4-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-Ethyl-5-[4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-benzooxazole;
2-[[4-[4-Methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran-2-yl]-phenyl]sulfonyl]-ethanol;
2-[4-Chloro-2-(methylsulfinyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-[[4-Methyl-2-(4-methylsulfonyl-phenyl)-tetrahydro-pyran-4-yl]sulfonyl]-6-(trifluoromethyl)-pyridine;
2-(2-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(3-Fluoro-5-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl) sulfonyl]-4-methyl-tetrahydro-pyran;
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-methyl-4-[[3-(trifluoromethyloxy)-phenyl]sulfonyl]-tetrahydro-pyran;
4-[[3-(Difluoro-methyl)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran;
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[(3-isopropoxy-phenyl) sulfonyl]-4-methyl-tetrahydro-pyran;
4-[(3-Cyclopropyl-phenyl)sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran;
2-(2-Fluoro-4-methylsulfonyl-phenyl)-4-[[3-fluoro-5-(trifluoromethyl)-phenyl]sulfonyl]-4-methyl-tetrahydro-pyran;
4-[[3-(Difluoro-methoxy)-phenyl]sulfonyl]-2-(2-fluoro-4-methylsulfonyl-phenyl)-4-methyl-tetrahydro-pyran; and
2-[4-(Cyclopropylsulfonyl)-phenyl]-4-methyl-4-[[3-(trifluoromethyl)phenyl]sulfonyl]-tetrahydro-pyran;
optionally in the form of a single stereoisomer or a mixture of stereoisomers, in the form of the free compound and/or a physiologically acceptable salt or solvate thereof.

14. A pharmaceutical composition comprising at least one compound according to claim 13.