# Patent

## Title
Therapeutic or prophylactic agent for multiple sclerosis

## Abstract

A therapeutic or prophylactic agent for multiple sclerosis is disclosed. The therapeutic or prophylactic agent comprises as an effective ingredient a glycine derivative having a specific structure or a pharmaceutically acceptable salt thereof, for example, the below-described compound [(E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid]. The therapeutic or prophylactic agent for multiple sclerosis according to the present invention shows the excellent absorbability and in vivo stability when orally administered, and exhibits high therapeutic or prophylactic effects.

## Background
This is the U.S. national phase application under 35 U.S.C. §371 of International Patent Application No. PCT/JP2007/062220, filed Jun. 18, 2007, and claims the benefit of Japanese Application No. 2006-168387, filed Jun. 19, 2006. The International Application was published in Japanese on Dec. 27, 2007 as International Publication No. WO 2007/148648 A1 under PCT Article 21(2). The afore-mentioned applications are hereby incorporated by reference in their entirety.
TECHNICAL FIELD
The present invention relates to a therapeutic or prophylactic agent for multiple sclerosis comprising as an effective ingredient a glycine derivative or a pharmaceutically acceptable salt thereof.
BACKGROUND ART
Multiple sclerosis is a nervous demyelinating disease with unknown etiology which is clinically characterized in that recurrence and remission are repeated and often develops into progressive physical disability. It is known that multiple sclerosis causes visual impairment, loss of equilibrium sense, poorly coordinated movement, slurred speech, tremor, numbness, extreme fatigue, alteration of intellectual functions, muscular weakness, paresthesia, and blindness (see, for example, Non-patent Literature 1 and Non-patent Literature 2).
Although it is said that there are 2,500,000 patients suffering from multiple sclerosis in the world, there may be a lot of potential patients who are not diagnosed yet due to the difficulty to detect the symptoms. In addition, multiple sclerosis is a chronic disease which repeats recurrence and remission and QOL of the patients is often seriously disturbed. Therefore, the importance of therapy for multiple sclerosis is increasing year by year.
Multiple sclerosis cannot be cured and the therapy is performed mainly by means of symptomatic treatments. Such treatments alleviate or prevent the symptoms, but cannot cure demyelination which is the basic defect of this disease. Corticosteroids which shorten the period of recurrence are used in the present therapy. However, a long-term improvement effect on the course of the disease has not been observed. In some cases, immunosuppressants, cyclophosphamide, leflunomide and cyclosporin A are used for progressive multiple sclerosis. However, it is known that such agents have a teratogenicity and carcinogenicity.
Thus, the therapeutic agents for multiple sclerosis now existing are not fully satisfactory with respect to effects thereof and reduction of side effects.
On the other hand, Patent Literature 1 discloses a use of the compounds represented by the below-described Formula:




(wherein Ar represents substituted phenylene or the like, L represents —S(O)2— or the like, X represents a bond or the like, Z represents COOH or the like, R2, R3, R4 represent hydrogen or the like, R5 represents —C2-10 alkenyl-aryl-NRdRe-heteroaryl-(Rd, Re represent hydrogen, C1-10 alkyl) or the like, R6 represents hydrogen or the like), which can be considered to be structurally similar to the compounds contained as an effective ingredient in the present invention, for the therapy of multiple sclerosis. However, the compounds whose use mentioned above is disclosed in the publication are structurally different from the compounds in the present invention in that the disclosed compounds are characterized in that Ar in the Formula is substituted with aminoalkyl structure (R1LN(R2)CHR4—: R1 represents substituted aryl or the like). Moreover, concrete data which demonstrate the effectiveness against multiple sclerosis are not described, therefore the publication fails to fully disclose that the compounds really have the therapeutic effect. Activity thereof when orally administered is also not disclosed.

In claims of Patent Literatures 2 and 3, use of the compounds represented by the Formula:

X—Y—Z-Aryl-A-B

(wherein X represents a 6-membered aromatic ring comprising two nitrogen atoms or the like, Y represents —C0-6 alkylene-NC1-10 alkyl-C0-6 alkylene- or the like, Z represents a bond or the like, Aryl represents a 6-membered aromatic ring, A represents —(CH2)C═C(CH2)n—(n=0-6) or the like, B represents —CH (substituted aryl-carbonylamino)CO2H or the like), which includes the compounds in the present invention, as a bone resorption inhibitor and platelet aggregation inhibitor is described. However, the compounds in the present invention are not concretely described in the publications. The use disclosed therein is also totally different from that of in the present invention. The therapeutic or prophylactic effect on multiple sclerosis according to the present invention is not suggested at all.

Patent Literature 4, which was published after the priority date of the present application, discloses a compound which is contained as an effective ingredient in the present invention and use thereof for therapy of inflammatory bowel disease. However, the therapeutic or prophylactic effect on multiple sclerosis according to the present invention is not disclosed at all.

    Patent Literature 1: WO 99/26923
    Patent Literature 2: WO 95/32710
    Patent Literature 3: WO 94/12181
    Patent Literature 4: WO 2006/068213
    Non-patent Literature 1: Proc. Soc. Exp. Biol. Med., 175, 282-294 (1984)
    Non-patent Literature 2: Immunol. Rev., 100, 307-332 (1987)


DISCLOSURE OF THE INVENTION
Problems which the Invention Tries to Solve
In view of the fact that development of a compound useful as a pharmaceutical for therapy or prophylaxis of multiple sclerosis is strongly demanded, an object of the present invention is to provide a therapeutic or prophylactic agent for multiple sclerosis comprising as an effective ingredient a low molecular compound or a pharmaceutically acceptable salt thereof which is useful as a pharmaceutical.
Means for Solving the Problem
The present inventors intensively studied to discover that the glycine derivatives represented by Formula (I) and pharmaceutically acceptable salts thereof have high oral absorbability and excellent in vivo stability, and are effective for the therapy or prophylaxis of multiple sclerosis, to complete the present invention.
That is, the present invention provides a therapeutic or prophylactic agent for multiple sclerosis comprising as an effective ingredient a compound of the Formula (I):




[wherein

    R1 represents hydrogen or C1-C5 alkyl;
    Xs independently represent fluoro, chloro, bromo, iodo or C1-C3 alkyl;
    V represents —CH═CH— or —C≡C—;
    Y represents Formula (II) or Formula (III):






(wherein

    R2 represents C1-C5 alkyl or C1-C3 alkoxy;
    R3 represents hydrogen or C1-C5 alkyl;
    m represents an integer of 0 to 3;
    n represents 0 or 1;
    p represents an integer of 0 to 2;
    W represents —O— or —N(R4)—

(wherein

    R4 represents hydrogen, C1-C5 alkyl, C3-C6 alkenyl, phenyl, benzyl, benzyl substituted with one or two R5s, tetrahydropyranyl, —(CH2)q—O—CH3, pyridylmethyl, —(CH2)q—CN, C4-C7 cycloalkylmethyl or thiazol-4-ylmethyl;
    R5 represents hydroxy or C1-C3 alkoxy; and
    q represents an integer of 1 to 3))]

or a pharmaceutically acceptable salt thereof. The present invention also provides a use of the compound of the Formula (I) described above or the pharmaceutically acceptable salt thereof for the production of a therapeutic or prophylactic agent for multiple sclerosis. The present invention further provides a therapeutic or prophylactic method for multiple sclerosis, comprising administering to a patient an effective amount of the compound of the Formula (I) described above or the pharmaceutically acceptable salt thereof.



Effects of the Invention
The therapeutic or prophylactic agents for multiple sclerosis according to the present invention have excellent oral absorbability and in vivo stability, and therefore exhibit high therapeutic or prophylactic effects.


BEST MODE FOR CARRYING OUT THE INVENTION
The term “alkyl” means a straight or branched hydrocarbon chain. Examples of alkyl include methyl, ethyl, propyl, isopropyl, butyl and isobutyl.
The term “alkoxy” means an oxygen atom having an alkyl substituent. Examples of alkoxy include methoxy, ethoxy, propoxy, isopropoxy and butoxy.
The term “alkenyl” means a straight or branched hydrocarbon chain having one or more carbon-carbon double bond. Examples of alkenyl include vinyl, allyl, isopropenyl, butenyl and pentenyl.
The term “cycloalkyl” means a monocyclic saturated hydrocarbon ring. Examples of cycloalkyl include cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl.
The term “cycloalkylmethyl” means a methyl group having a cycloalkyl group. Examples of cycloalkylmethyl include cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl and cyclohexylmethyl.
For the compounds represented by the above-described Formula (I), preferred modes are as follows:
As the “X”, fluoro, chloro or methyl is preferred, and chloro or methyl is especially preferred.
As the “V”, —CH═CH— is preferred, and trans form —CH═CH— is especially preferred.
As the “R1”, hydrogen, methyl or tert-butyl is preferred, and hydrogen is especially preferred.
Among the “Y” structures represented by the above-described Formula (II) or
As the “W”, —N(R4)— is preferred.
As the “R2” when it exists, methyl, ethyl or methoxy is preferred, and methyl is especially preferred.
As the “R3”, hydrogen or C1-C3 alkyl (e.g., methyl, ethyl or propyl) is preferred, and methyl is especially preferred.
As the “R4”, C1-C3 alkyl (e.g., methyl, ethyl, propyl or isopropyl), cyanoethyl, tetrahydropyranyl or phenyl is preferred, and methyl or isopropyl is especially preferred.
As the “m”, an integer of 0 to 2 is preferred, and 0 is especially preferred.
As the “n”, 0 is preferred.
As the “p”, 1 or 2 is preferred, and 1 is especially preferred.
The wavy line in Formulae (II) and (III) represents the moiety in the compound, to which the group represented by Formula (II) or (III) is bound.
Especially,

    (1) the compounds represented by Formula (I), wherein
    
        V is —CH═CH—;
        when Y is represented by Formula (II), m is 0;
        when Y is represented by Formula (III), p is 1;
    
    
    and pharmaceutically acceptable salts thereof are preferred. Among these,
    (2) the compounds represented by Formula (I), wherein
    
        R1 is hydrogen;
        when Y is represented by Formula (II), W is —N(R4)— and R4 is C1-C3 alkyl, cyanoethyl, tetrahydropyranyl or phenyl;
        when Y is represented by Formula (III), n is O and R3 is C1-C3 alkyl;
    
    
    and pharmaceutically acceptable salts thereof are more preferred. Among these,
    (3) the compounds represented by Formula (I), wherein
    
        Xs are independently chloro or methyl;
        V is trans form —CH═CH—;
        when Y is represented by Formula (II), W is —N(R4)— and R4 is methyl or isopropyl;
        when Y is represented by Formula (III), R3 is methyl,

and pharmaceutically acceptable salts thereof are more preferred.

    
    


Examples of the pharmaceutically acceptable salts of the compounds represented by Formula (I) include, for acidic group(s) such as carboxylic group in the formula, ammonium salt; salts of alkaline metals such as sodium and potassium; salts of alkaline earth metals such as calcium and magnesium; aluminum salt; zinc salt; salts of organic amines or the like such as triethylamine, ethanolamine, morpholine, piperidine and dicyclohexylamine; and salts of basic amino acids such as arginine and lysine. In cases where a basic group(s) exist(s) in the formula, examples of the pharmaceutically acceptable salts of the compounds include, for the basic group(s), salts of inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, hydrobromic acid and phosphoric acid; salts of organic carboxylic acids such as acetic acid, lactic acid, citric acid, maleic acid, benzoic acid, oxalic acid, glutaric acid, malic acid, tartaric acid, fumaric acid, mandelic acid and succinic acid; and salts of organic sulfonic acids such as methanesulfonic acid, p-toluenesulfonic acid and camphor sulfonic acid.
The structure represented by Formula (I) includes optical isomers represented by Formula (IV) and (V) about the asymmetric carbon atom, and the present invention includes these isomers and mixtures thereof. Further, in the structure represented by Formula (I), in cases where Y has an asymmetric carbon atom, the present invention include the isomers based on the asymmetric carbon atom and mixtures thereof.




Among the ingredients of the therapeutic or prophylactic agents for multiple sclerosis according to the present invention, preferred ingredients include compounds represented by Formula (Ia) or (Ib). Specific examples of the compounds represented by Formula (Ia) or (Ib) are shown in Tables 1 to 5.








TABLE 1








(Ia)








 



(Ib)








 












R6
R7
R8
R9
R10
R11





—Cl
—Cl
—H
—Me
—H
—H


—Cl
—Me
—H
—Me
—H
—H


—Me
—Me
—H
—Me
—H
—H


—Cl
—Cl
—H
—Me
—H
—Me


—Cl
—Me
—H
—Me
—H
—Me


—Me
—Me
—H
—Me
—H
—Me


—Cl
—Cl
—H
—Me
—Me
—Me


—Cl
—Me
—H
—Me
—Me
—Me


—Me
—Me
—H
—Me
—Me
—Me


—Cl
—Cl
—H
—Et
—H
—H


—Cl
—Me
—H
—Et
—H
—H


—Me
—Me
—H
—Et
—H
—H


—Cl
—Cl
—H
—Et
—H
—Me


—Cl
—Me
—H
—Et
—H
—Me


—Me
—Me
—H
—Et
—H
—Me


—Cl
—Cl
—H
—Et
—Me
—Me


—Cl
—Me
—H
—Et
—Me
—Me


—Me
—Me
—H
—Et
—Me
—Me


—Cl
—Cl
—H
—nPr
—H
—H


—Cl
—Me
—H
—nPr
—H
—H


—Me
—Me
—H
—nPr
—H
—H


—Cl
—Cl
—H
—nPr
—H
—Me


—Cl
—Me
—H
—nPr
—H
—Me


—Me
—Me
—H
—nPr
—H
—Me


—Cl
—Cl
—H
—nPr
—Me
—Me


—Cl
—Me
—H
—nPr
—Me
—Me


—Me
—Me
—H
—nPr
—Me
—Me


—Cl
—Cl
—H
—iPr
—H
—H


—Cl
—Me
—H
—iPr
—H
—H


—Me
—Me
—H
—iPr
—H
—H


—Cl
—Cl
—H
—iPr
—H
—Me


—Cl
—Me
—H
—iPr
—H
—Me


—Me
—Me
—H
—iPr
—H
—Me


—Cl
—Cl
—H
—iPr
—Me
—Me


—Cl
—Me
—H
—iPr
—Me
—Me


—Me
—Me
—H
—iPr
—Me
—Me

















TABLE 2








(Ia)








 



(Ib)








 












R6
R7
R8
R9
R10
R11





—Cl
—Cl
—H
—(CH2)2CN
—H
—H


—Cl
-Me
—H
—(CH2)2CN
—H
—H


-Me
-Me
—H
—(CH2)2CN
—H
—H


—Cl
—Cl
—H
—(CH2)2CN
—H
-Me


—Cl
-Me
—H
—(CH2)2CN
—H
-Me


-Me
-Me
—H
—(CH2)2CN
—H
-Me


—Cl
—Cl
—H
—(CH2)2CN
-Me
-Me


—Cl
-Me
—H
—(CH2)2CN
-Me
-Me


-Me
-Me
—H
—(CH2)2CN
-Me
-Me


—Cl
—Cl
—H
4-tetrahydropyranyl
—H
—H


—Cl
-Me
—H
4-tetrahydropyranyl
—H
—H


-Me
-Me
—H
4-tetrahydropyranyl
—H
—H


—Cl
—Cl
—H
4-tetrahydropyranyl
—H
-Me


—Cl
-Me
—H
4-tetrahydropyranyl
—H
-Me


-Me
-Me
—H
4-tetrahydropyranyl
—H
-Me


—Cl
—Cl
—H
4-tetrahydropyranyl
-Me
-Me


—Cl
-Me
—H
4-tetrahydropyranyl
-Me
-Me


-Me
-Me
—H
4-tetrahydropyranyl
-Me
-Me


—Cl
—Cl
-Me
-Me
—H
—H


—Cl
-Me
-Me
-Me
—H
—H


-Me
-Me
-Me
-Me
—H
—H


—Cl
—Cl
-Me
-Me
—H
-Me


—Cl
-Me
-Me
-Me
—H
-Me


-Me
-Me
-Me
-Me
—H
-Me


—Cl
—Cl
-Me
-Me
-Me
-Me


—Cl
-Me
-Me
-Me
-Me
-Me


-Me
-Me
-Me
-Me
-Me
-Me


—Cl
—Cl
-Me
-Et
—H
—H


—Cl
-Me
-Me
-Et
—H
—H


-Me
-Me
-Me
-Et
—H
—H


—Cl
—Cl
-Me
-Et
—H
-Me


—Cl
-Me
-Me
-Et
—H
-Me


-Me
-Me
-Me
-Et
—H
-Me


—Cl
—Cl
-Me
-Et
-Me
-Me


—Cl
-Me
-Me
-Et
-Me
-Me


-Me
-Me
-Me
-Et
-Me
-Me

















TABLE 3








(Ia)








 



(Ib)








 












R6
R7
R8
R9
R10
R11





—Cl
—Cl
-Me
-nPr
—H
—H


—Cl
-Me
-Me
-nPr
—H
—H


-Me
-Me
-Me
-nPr
—H
—H


—Cl
—Cl
-Me
-nPr
—H
-Me


—Cl
-Me
-Me
-nPr
—H
-Me


-Me
-Me
-Me
-nPr
—H
-Me


—Cl
—Cl
-Me
-nPr
-Me
-Me


—Cl
-Me
-Me
-nPr
-Me
-Me


-Me
-Me
-Me
-nPr
-Me
-Me


—Cl
—Cl
-Me
-iPr
—H
—H


—Cl
-Me
-Me
-iPr
—H
—H


-Me
-Me
-Me
-iPr
—H
—H


—Cl
—Cl
-Me
-iPr
—H
-Me


—Cl
-Me
-Me
-iPr
—H
-Me


-Me
-Me
-Me
-iPr
—H
-Me


—Cl
—Cl
-Me
-iPr
-Me
-Me


—Cl
-Me
-Me
-iPr
-Me
-Me


-Me
-Me
-Me
-iPr
-Me
-Me


—Cl
—Cl
-Me
—(CH2)2CN
—H
—H


—Cl
-Me
-Me
—(CH2)2CN
—H
—H


-Me
-Me
-Me
—(CH2)2CN
—H
—H


—Cl
—Cl
-Me
—(CH2)2CN
—H
-Me


—Cl
-Me
-Me
—(CH2)2CN
—H
-Me


-Me
-Me
-Me
—(CH2)2CN
—H
-Me


—Cl
—Cl
-Me
—(CH2)2CN
-Me
-Me


—Cl
-Me
-Me
—(CH2)2CN
-Me
-Me


-Me
-Me
-Me
—(CH2)2CN
-Me
-Me


—Cl
—Cl
-Me
4-tetrahydropyranyl
—H
—H


—Cl
-Me
-Me
4-tetrahydropyranyl
—H
—H


-Me
-Me
-Me
4-tetrahydropyranyl
—H
—H


—Cl
—Cl
-Me
4-tetrahydropyranyl
—H
-Me


—Cl
-Me
-Me
4-tetrahydropyranyl
—H
-Me


-Me
-Me
-Me
4-tetrahydropyranyl
—H
-Me


—Cl
—Cl
-Me
4-tetrahydropyranyl
-Me
-Me


—Cl
-Me
-Me
4-tetrahydropyranyl
-Me
-Me


-Me
-Me
-Me
4-tetrahydropyranyl
-Me
-Me

















TABLE 4








(Ia)








 



(Ib)








 














R6
R7
R8
R9
R10
R11







—Cl
—Cl
-tBu
-Me
—H
—H



—Cl
-Me
-tBu
-Me
—H
—H



-Me
-Me
-tBu
-Me
—H
—H



—Cl
—Cl
-tBu
-Me
—H
-Me



—Cl
-Me
-tBu
-Me
—H
-Me



-Me
-Me
-tBu
-Me
—H
-Me



—Cl
—Cl
-tBu
-Me
-Me
-Me



—Cl
-Me
-tBu
-Me
-Me
-Me



-Me
-Me
-tBu
-Me
-Me
-Me



—Cl
—Cl
-tBu
-Et
—H
—H



—Cl
-Me
-tBu
-Et
—H
—H



-Me
-Me
-tBu
-Et
—H
—H



—Cl
—Cl
-tBu
-Et
—H
-Me



—Cl
-Me
-tBu
-Et
—H
-Me



-Me
-Me
-tBu
-Et
—H
-Me



—Cl
—Cl
-tBu
-Et
-Me
-Me



—Cl
-Me
-tBu
-Et
-Me
-Me



-Me
-Me
-tBu
-Et
-Me
-Me



—Cl
—Cl
-tBu
-nPr
—H
—H



—Cl
-Me
-tBu
-nPr
—H
—H



-Me
-Me
-tBu
-nPr
—H
—H



—Cl
—Cl
-tBu
-nPr
—H
-Me



—Cl
-Me
-tBu
-nPr
—H
-Me



-Me
-Me
-tBu
-nPr
—H
-Me



—Cl
—Cl
-tBu
-nPr
-Me
-Me



—Cl
-Me
-tBu
-nPr
-Me
-Me



-Me
-Me
-tBu
-nPr
-Me
-Me



—Cl
—Cl
-tBu
-iPr
—H
—H



—Cl
-Me
-tBu
-iPr
—H
—H



-Me
-Me
-tBu
-iPr
—H
—H



—Cl
—Cl
-tBu
-iPr
—H
-Me



—Cl
-Me
-tBu
-iPr
—H
-Me



-Me
-Me
-tBu
-iPr
—H
-Me



—Cl
—Cl
-tBu
-iPr
-Me
-Me



—Cl
-Me
-tBu
-iPr
-Me
-Me



-Me
-Me
-tBu
-iPr
-Me
-Me


















TABLE 5








(Ia)








 



(Ib)








 












R6
R7
R8
R9
R10
R11





—Cl
—Cl
-tBu
—(CH2)2CN
—H
—H


—Cl
-Me
-tBu
—(CH2)2CN
—H
—H


-Me
-Me
-tBu
—(CH2)2CN
—H
—H


—Cl
—Cl
-tBu
—(CH2)2CN
—H
-Me


—Cl
-Me
-tBu
—(CH2)2CN
—H
-Me


-Me
-Me
-tBu
—(CH2)2CN
—H
-Me


—Cl
—Cl
-tBu
—(CH2)2CN
-Me
-Me


—Cl
-Me
-tBu
—(CH2)2CN
-Me
-Me


-Me
-Me
-tBu
—(CH2)2CN
-Me
-Me


—Cl
—Cl
-tBu
4-tetrahydropyranyl
—H
—H


—Cl
-Me
-tBu
4-tetrahydropyranyl
—H
—H


-Me
-Me
-tBu
4-tetrahydropyranyl
—H
—H


—Cl
—Cl
-tBu
4-tetrahydropyranyl
—H
-Me


—Cl
-Me
-tBu
4-tetrahydropyranyl
—H
-Me


-Me
-Me
-tBu
4-tetrahydropyranyl
—H
-Me


—Cl
—Cl
-tBu
4-tetrahydropyranyl
-Me
-Me


—Cl
-Me
-tBu
4-tetrahydropyranyl
-Me
-Me


-Me
-Me
-tBu
4-tetrahydropyranyl
-Me
-Me









The symbol “-tBu” shown in Tables 4 and 5 represents tert-butyl group; the symbol “-iPr” shown in Tables 1, 3 and 4 represents normal propyl group; and the symbol “-iPr” shown in Tables 1, 3 and 4 represents isopropyl group. The compounds shown in Tables 1 to 5 include pharmaceutically acceptable salts thereof.
Among the ingredients of the therapeutic or prophylactic agents for multiple sclerosis according to the present invention, preferred ingredients also include compounds represented by Formula (Ic) or (Id). Specific examples of the compounds represented by Formula (Ic) or (Id) are shown in Tables 6 and 7.








TABLE 6








(Ic)








 



(Id)








 












R12
R13
R14
R15
A
B





—Cl
—Cl
—H
-Me
—CH2—
bond


—Cl
-Me
—H
-Me
—CH2—
bond


-Me
-Me
—H
-Me
—CH2—
bond


—Cl
—Cl
—H
-Me
—CH2—CH2—
bond


—Cl
-Me
—H
-Me
—CH2—CH2—
bond


-Me
-Me
—H
-Me
—CH2—CH2—
bond


—Cl
—Cl
—H
-Me
—CH2—
—CH2—


—Cl
-Me
—H
-Me
—CH2—
—CH2—


-Me
-Me
—H
-Me
—CH2—
—CH2—


—Cl
—Cl
—H
-Me
—CH2—CH2—
—CH2—


—Cl
-Me
—H
-Me
—CH2—CH2—
—CH2—


-Me
-Me
—H
-Me
—CH2—CH2—
—CH2—


—Cl
—Cl
—H
-Et
—CH2—
bond


—Cl
-Me
—H
-Et
—CH2—
bond


-Me
-Me
—H
-Et
—CH2—
bond


—Cl
—Cl
—H
-Et
—CH2—CH2—
bond


—Cl
-Me
—H
-Et
—CH2—CH2—
bond


-Me
-Me
—H
-Et
—CH2—CH2—
bond


—Cl
—Cl
—H
-Et
—CH2—
—CH2—


—Cl
-Me
—H
-Et
—CH2—
—CH2—


-Me
-Me
—H
-Et
—CH2—
—CH2—


—Cl
—Cl
—H
-Et
—CH2—CH2—
—CH2—


—Cl
-Me
—H
-Et
—CH2—CH2—
—CH2—


-Me
-Me
—H
-Et
—CH2—CH2—
—CH2—


—Cl
—Cl
-Me
-Me
—CH2—
bond


—Cl
-Me
-Me
-Me
—CH2—
bond


-Me
-Me
-Me
-Me
—CH2—
bond


—Cl
—Cl
-Me
-Me
—CH2—CH2—
bond


—Cl
-Me
-Me
-Me
—CH2—CH2—
bond


-Me
-Me
-Me
-Me
—CH2—CH2—
bond


—Cl
—Cl
-Me
-Me
—CH2—
—CH2—


—Cl
-Me
-Me
-Me
—CH2—
—CH2—


-Me
-Me
-Me
-Me
—CH2—
—CH2—


—Cl
—Cl
-Me
-Me
—CH2—CH2—
—CH2—


—Cl
-Me
-Me
-Me
—CH2—CH2—
—CH2—


-Me
-Me
-Me
-Me
—CH2—CH2—
—CH2—

















TABLE 7








(Ic)








 



(Id)








 












R12
R13
R14
R15
A
B





—Cl
—Cl
-Me
-Et
—CH2—
bond


—Cl
-Me
-Me
-Et
—CH2—
bond


-Me
-Me
-Me
-Et
—CH2—
bond


—Cl
—Cl
-Me
-Et
—CH2—CH2—
bond


—Cl
-Me
-Me
-Et
—CH2—CH2—
bond


-Me
-Me
-Me
-Et
—CH2—CH2—
bond


—Cl
—Cl
-Me
-Et
—CH2—
—CH2—


—Cl
-Me
-Me
-Et
—CH2—
—CH2—


-Me
-Me
-Me
-Et
—CH2—
—CH2—


—Cl
—Cl
-Me
-Et
—CH2—CH2—
—CH2—


—Cl
-Me
-Me
-Et
—CH2—CH2—
—CH2—


-Me
-Me
-Me
-Et
—CH2—CH2—
—CH2—


—Cl
—Cl
-tBu
-Me
—CH2—
bond


—Cl
-Me
-tBu
-Me
—CH2—
bond


-Me
-Me
-tBu
-Me
—CH2—
bond


—Cl
—Cl
-tBu
-Me
—CH2—CH2—
bond


—Cl
-Me
-tBu
-Me
—CH2—CH2—
bond


-Me
-Me
-tBu
-Me
—CH2—CH2—
bond


—Cl
—Cl
-tBu
-Me
—CH2—
—CH2—


—Cl
-Me
-tBu
-Me
—CH2—
—CH2—


-Me
-Me
-tBu
-Me
—CH2—
—CH2—


—Cl
—Cl
-tBu
-Me
—CH2—CH2—
—CH2—


—Cl
-Me
-tBu
-Me
—CH2—CH2—
—CH2—


-Me
-Me
-tBu
-Me
—CH2—CH2—
—CH2—


—Cl
—Cl
-tBu
-Et
—CH2—
bond


—Cl
-Me
-tBu
-Et
—CH2—
bond


-Me
-Me
-tBu
-Et
—CH2—
bond


—Cl
—Cl
-tBu
-Et
—CH2—CH2—
bond


—Cl
-Me
-tBu
-Et
—CH2—CH2—
bond


-Me
-Me
-tBu
-Et
—CH2—CH2—
bond


—Cl
—Cl
-tBu
-Et
—CH2—
—CH2—


—Cl
-Me
-tBu
-Et
—CH2—
—CH2—


-Me
-Me
-tBu
-Et
—CH2—
—CH2—


—Cl
—Cl
-tBu
-Et
—CH2—CH2—
—CH2—


—Cl
-Me
-tBu
-Et
—CH2—CH2—
—CH2—


-Me
-Me
-tBu
-Et
—CH2—CH2—
—CH2—









The symbol “-tBu” shown in Table 7 represents tert-butyl group, and the symbol “bond” shown in Tables 6 and 7 represents valence bond. The compounds shown in Tables 6 and 7 include pharmaceutically acceptable salts thereof.
The compounds represented by Formula (I) or the pharmaceutically acceptable salts thereof which are comprised as an effective ingredient in the therapeutic or prophylactic agents for multiple sclerosis according to the present invention can be synthesized by the following steps:
Conversion of the compounds represented by the following Formula (VI)




(wherein the symbols have the same meanings as described above):

to a pharmaceutically acceptable salt thereof can be attained by a conventional method using a base (inorganic base such as sodium hydroxide; organic base such as triethylamine; or basic amino acid such as lysine) or an acid (acetic acid; inorganic acid such as nitric acid or sulfuric acid; organic acid such as acetic acid or maleic acid; organic sulfonic acid such as p-toluenesulfonic acid; acidic amino acid such as aspartic acid).

The compounds of Formula (VI) can be obtained by converting the esterified carboxyl group CO2R16 of a compound of the Formula (VII):




[wherein R16 represents C1-C5 alkyl, and the other symbols have the same meanings as described above]

to carboxyl group.

Conversion of the esterified carboxyl group CO2R16 to carboxyl group may be attained by a conventional method such as hydrolysis using a base (alkaline metal hydroxide such as lithium hydroxide, sodium hydroxide, barium hydroxide) or an acid (such as hydrochloric acid), or acid (e.g. trifluoroacetic acid) treatment. The amount of the base used is usually 0.9 to 100 equivalents, preferably 0.9 to 10.0 equivalents with respect to the compound of Formula (VII). The amount of the acid used is usually 1.0 equivalent with respect to the compound of Formula (VII) to an excess amount used as a solvent, preferably 1.0 to 100 equivalents with respect to the compound of Formula (VII).
Examples of the solvent include aprotic bipolar solvents such as DMF and DMSO; ether solvents such as diethyl ether, THF and DME; alcoholic solvents such as methanol and ethanol; halogen-containing solvents such as dichloromethane, chloroform, carbon tetrachloride and 1,2-dichloroethane; water; and mixtures thereof. Among these, DMF, THF, methanol, ethanol or water is preferably used. The reaction temperature is thought to be −30° C. to 200° C. In case of hydrolysis using a base, the reaction temperature is preferably −20° C. to 60° C., more preferably −10° C. to 40° C. In case of hydrolysis using an acid, the reaction temperature is preferably 0° C. to 180° C., more preferably 0° C. to 100° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 1 minute and 30 hours.
The compounds of Formula (VII) may be synthesized by the following method (Method A or Method B) depending on the structure of “V” (V has the same meaning as described above) in Formula (I):
Method A: In cases where V is —CH═CH—




[wherein Z1 represents a leaving group such as halogen atom or trifluoromethanesulfonyloxy group, and the other symbols have the same meanings as described above]

The compounds of Formula (VIIa) can be synthesized by coupling a compound of Formula (VIIIa) with a compound of Formula (IX).
The coupling reaction is carried out in the presence of a palladium catalyst and a base, and in the presence or absence of a phosphine ligand, in an appropriate solvent.
The compound of Formula (IX) is used in an amount of 1.0 to 10 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (VIIIa).
Examples of the palladium catalyst include palladium acetate, tetrakis(triphenylphosphine)palladium, bis(triphenylphosphine)palladium dichloride, palladium(II) chloride, bis(dibenzylideneacetone)palladium, and bis(diphenylphosphino) ferrocene palladium dichloride. Among these, palladium acetate, tetrakis(triphenylphosphine)palladium or bis(dibenzylideneacetone)palladium is preferably used. The amount of the palladium catalyst used is 0.001 to 1 equivalent, preferably 0.01 to 0.2 equivalents with respect to the compound of Formula (VIIIa).
Examples of the base include potassium carbonate, potassium phosphate, cesium carbonate, sodium hydroxide, potassium hydroxide, sodium-tert-butoxide, triethylamine, diisopropylamine, diisopropylethylamine and n-butylamine. Among these, potassium carbonate or potassium phosphate is preferably used. The amount of the base used is 1 to 10 equivalents, preferably 1 to 4 equivalents with respect to the compound of Formula (VIIIa).
Examples of the phosphine ligand include triphenylphosphine, tris(2-methylphenyl)phosphine, tributylphosphine, triethylphosphine, tri-tert-butylphosphine, 2,2′-bis(diphenylphosphino)-1,1′-biphenyl, 2-(di-tert-butylphosphino)-1,1′-binaphthyl, 2-(dicyclohexylphosphino)diphenyl and 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene. Among these, tributylphosphine, tris(2-methylphenyl)phosphine or 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene is preferably used. The amount of the phosphine ligand used is 0.001 to 1 equivalent, preferably 0.01 to 0.2 equivalents with respect to the compound of Formula (VIIIa).
Examples of the solvent include aprotic bipolar solvents such as DMF, DMSO and NMP; ether solvents such as THF, DME and dioxane; alcoholic solvents such as methanol and ethanol; halogen-containing solvents such as dichloromethane, chloroform, carbon tetrachloride and 1,2-dichloroethane; aromatic solvents such as benzene, toluene and xylene; and water. Among these, DMF, dioxane or water is preferably used. The reaction temperature is thought to be 0° C. to 200° C., and is preferably 40° C. to 160° C., more preferably 60° C. to 140° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 30 minutes and 30 hours.
Method B: In cases where V is —CH≡CH—




[wherein the symbols have the same meanings as described above]

The compounds of Formula (VIIb) can be synthesized by the coupling reaction between a compound of Formula (VIIIb) and a compound of Formula (IX). The coupling reaction is carried out in the presence of a palladium catalyst, a base, and a copper catalyst, in the presence or absence of a phosphine ligand, in an appropriate solvent.
The compound of Formula (IX) is used in an amount of 1.0 to 10 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (VIIIb).
Examples of the palladium catalyst include palladium acetate, tetrakis(triphenylphosphine)palladium, bis(triphenylphosphine)palladium dichloride, palladium(II) chloride, bis(dibenzylideneacetone)palladium, and bis(diphenylphosphino) ferrocene palladium dichloride. Among these, tetrakis(triphenylphosphine)palladium or bis(triphenylphosphine)palladium dichloride is preferably used. The amount of the palladium catalyst used is 0.001 to 1 equivalent, preferably 0.005 to 0.2 equivalents with respect to the compound of Formula (VIIIb).
Examples of the base include potassium carbonate, potassium phosphate, cesium carbonate, sodium hydroxide, potassium hydroxide, sodium-tert-butoxide, diethylamine, triethylamine, diisopropylamine, diisopropylethylamine and n-butylamine. Among these, diethylamine, triethylamine, diisopropylamine or diisopropylethylamine is preferably used. The amount of the base used is 1 equivalent with respect to the compound of Formula (VIIIb) to an excess amount used as a solvent, preferably 4 equivalents with respect to the compound of Formula (VIIIb) to an excess amount.
Examples of the copper catalyst include copper powder, copper iodide and copper bromide, and copper iodide is preferably used. The copper catalyst is used in an amount of 0.001 to 0.5 equivalents, preferably 0.01 to 0.4 equivalents with respect to the compound of Formula (VIIIb).
Examples of the phosphine ligand include triphenylphosphine, tris(2-methylphenyl)phosphine, tetrakis(triphenyl)phosphine, tributylphosphine, triethylphosphine, tri-tert-butylphosphine, 2,2′-bis(diphenylphosphino)-1,1′-biphenyl, 2-(di-tert-butylphosphino)-1,1′-binaphthyl, 2-(dicyclohexylphosphino)diphenyl and 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene. Preferably, no phosphine ligand is used, or tris(2-methylphenyl)phosphine or tetrakis(triphenyl)phosphine is preferably used. When the phosphine ligand is used, the amount thereof is 0.001 to 0.5 equivalents, preferably 0.005 to 0.4 equivalents with respect to the compound of Formula (VIIIb).
Examples of the solvent include aprotic bipolar solvents such as DMF, DMSO and NMP; ether solvents such as THF, DME and dioxane; alcoholic solvents such as methanol and ethanol; halogen-containing solvents such as dichloromethane, chloroform, carbon tetrachloride and 1,2-dichloroethane; aromatic solvents such as benzene, toluene and xylene; organic amine solvents such as diethylamine, triethylamine and diisopropylamine; and water; as well as mixtures thereof. Preferably, THF, diethylamine, diisopropylamine, triethylamine or a mixture thereof is used. The reaction temperature is thought to be −40° C. to 200° C., and is preferably −20° C. to 100° C., more preferably −10° C. to 60° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 1 minute and 30 hours.
The compounds of Formula (VIIIa) and the compounds of Formula (VIIIb) can be synthesized by the following method:




[wherein Z2 represents —CH═CH2 or —C≡CH, and the other symbols have the same meanings as described above]

The compounds of Formula (VIIIa) and the compounds of Formula (VIIIb) can be synthesized by the following methods (Method C, Method D or Method E):
Method C:
The compounds can be synthesized by condensing a compound of Formula (X) with R16—OH (wherein R16 represents the same meaning as described above). The condensation reaction may be carried out in the presence of a condensing agent, in the presence or absence of a base, in an appropriate solvent. Examples of the condensing agent include dicyclohexylcarbodiimide, BOP reagent and EDC. Preferably, EDC or BOP reagent is used. In cases where the base exists, examples of the base include triethylamine, diisopropylethylamine, pyridine, 4-dimethylaminopyridine and N-methylmorpholine. Preferably, triethylamine, 4-dimethylaminopyridine or diisopropylethylamine is used. The amount of R16—OH used is 1.0 to 100 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (X). The condensing agent is used in an amount of 1.0 to 20 equivalents, preferably 1.0 to 5.0 equivalents with respect to the compound of Formula (X). The base is used in an amount of 1.0 to 100 equivalents, preferably 1.0 to 40 equivalents with respect to the compound of Formula (X).
Examples of the solvent include aprotic bipolar solvents such as DMF, DMSO and NMP; ether solvents such as THF, DME and dioxane; and halogen-containing solvents such as dichloromethane, chloroform and 1,2-dichloroethane. Preferably, THF or dichloromethane is used. The reaction temperature is thought to be −40° C. to 100° C., and is preferably 0° C. to 60° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 1 minute and 30 hours.
Method D:
The compounds can be synthesized by condensing a reactive derivative of a compound of Formula (X) with R16—OH (wherein R16 represents the same meaning as described above) in the presence of a base. Examples of the reactive derivative of the compound of Formula (X) include acid halides (such as acid chloride). Examples of the base include organic amine bases such as triethylamine, pyridine and diisopropylethylamine; and inorganic bases such as sodium carbonate, potassium carbonate and sodium hydrogen carbonate. Preferably, triethylamine, pyridine or diisopropylethylamine is used. The amount of R16—OH is 1.0 to 100 equivalents, preferably 1.0 to 20 equivalents with respect to the compound of Formula (X). The base is used in an amount of 1.0 to 100 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (X).
Examples of the solvent include aprotic bipolar solvents such as DMF, DMSO and NMP; ether solvents such as THF, DME and dioxane; halogen-containing solvents such as dichloromethane, chloroform and 1,2-dichloroethane; and aromatic solvents such as benzene and toluene. Preferably, dichloromethane or THF is used. The reaction temperature is thought to be −10° C. to 100° C., and is preferably 0° C. to 40° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 1 minute and 30 hours.
Method E:
In cases where R16 is methyl or ethyl, the compounds can be synthesized by adding a compound of Formula (X) to a mixture of methanol or ethanol and thionyl chloride. The amount of methanol or ethanol used is usually 1.0 equivalent with respect to the compound of Formula (X) to an excess amount used as a solvent, and is preferably 10 equivalents with respect to the compound of Formula (X) to an excess amount used as a solvent. The amount of thionyl chloride used is usually 1 equivalent to an excess amount used as a solvent. The reaction temperature is thought to be −50° C. to 60° C., and is preferably −20° C. to 40° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 1 minute and 60 hours.
The compounds of Formula (X) can be synthesized by the following method:




[wherein the symbols have the same meanings as described above]

The compounds can be synthesized by condensing a compound of Formula (XI) with a compound of Formula (XII) in the presence of a base in an appropriate solvent. The compounds of Formulae (XI) and (XII) are normally available materials. The compound of Formula (XII) is used in an amount of 1.0 to 20 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (XI).
Examples of the base include organic amine bases such as triethylamine, pyridine and diisopropylethylamine; and inorganic bases such as sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate and sodium hydrogen carbonate. Preferably, triethylamine, pyridine, diisopropylethylamine, sodium hydroxide or potassium hydroxide is used. The base is used in an amount of 1.0 to 100 equivalents, preferably 1.0 to 50 equivalents with respect to the compound of Formula (XI).
Examples of the solvent include aprotic bipolar solvents such as DMF, DMSO and NMP; ether solvents such as THF, DME and dioxane; halogen-containing solvents such as dichloromethane, chloroform and 1,2-dichloroethane; and water, as well as mixtures thereof. Preferably, dichloromethane, THF, dioxane, water or a mixture thereof is used. The reaction temperature is thought to be −10° C. to 100° C., and is preferably 0° C. to 40° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 1 minute and 60 hours.
The compounds of Formula (IX) can be synthesized by the following method (Method F to Method H) depending on the structure of “Y” (Y has the same meaning as described above) in Formula (IX):
Method F:
In cases where Y is represented by the following Formula (Ia):




[wherein the symbols have the same meanings as described above] the compounds of Formula (IX) can be synthesized by the following method:





[wherein the symbols have the same meanings as described above]

Step 1:

The compounds of Formula (XV) may be synthesized by condensing a compound of Formula (XIII) and a compound of Formula (XIV) in the presence of an acid in an appropriate solvent. Examples of the acid include acetic acid, trifluoroacetic acid, methanesulfonic acid, p-toluenesulfonic acid and camphor sulfonic acid. Preferably, acetic acid is used. The compounds of Formula (XIII) are normally available materials and the compounds of Formula (XIV) are normally available materials or may be synthesized by a known method. The compound of Formula (XIV) is used in an amount of 1.0 to 10 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (XIII). The acid is used in an amount of 1.0 equivalent to an excess amount used as a solvent, preferably in an amount of 1.0 to 20 equivalents.
Examples of the solvent include ether solvents such as THF, DME and dioxane; halogen-containing solvents such as dichloromethane and carbon tetrachloride; aromatic solvents such as benzene, toluene and xylene; and aprotic bipolar solvents such as DMF and DMSO. Preferably, DME or dioxane is used. The reaction temperature is thought to be 0° C. to 160° C., and is preferably 40° C. to 100° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 1 hour and 30 hours.
Step 2:
The compounds of Formula (IXa) can be synthesized by adding a base to a compound of Formula (XV) in an appropriate solvent and further adding R4-Z1 (wherein the symbols have the same meanings as described above) to conduct condensation. The compound of R4-Z1 is used in an amount of 1.0 to 10 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (XV).
Examples of the base include metal hydrides such as sodium hydride and potassium hydride; inorganic bases such as potassium carbonate, sodium carbonate and cesium carbonate; organic metals such as butyllithium; and organic amines such as DBU, diisopropylethylamine and triethylamine. Preferably, sodium hydride is used. The base is used in an amount of 1.0 to 50 equivalents, preferably 1.0 to 20 equivalents with respect to the compound of Formula (XV). Examples of the solvent include ether solvents such as THF, DME and dioxane; halogen-containing solvents such as dichloromethane and carbon tetrachloride; aromatic solvents such as benzene, toluene and xylene; and aprotic bipolar solvents such as DMF and DMSO. Preferably, DMF or THF is used. The reaction temperature is thought to be −78° C. to 160° C., and is preferably −20° C. to 40° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 15 minutes and 30 hours.
Method G:
In cases where Y is represented by the following Formula (IIb):




[wherein the symbols have the same meanings as described above]

the compounds of Formula (IX) can be synthesized by the following method:





[wherein the symbols have the same meanings as described above]

The compounds can be synthesized by condensing a compound of Formula (XVI) and a compound of Formula (XIV) in the presence of a base in an appropriate solvent. The compounds of Formula (XVI) are normally available materials. The amount of the compound of Formula (XIV) used is 1.0 to 10 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (XVI).
Examples of the base include metal hydrides such as sodium hydride and potassium hydride; inorganic bases such as potassium carbonate, sodium carbonate and cesium carbonate; organic metals such as butyllithium; and organic amines such as DBU, diisopropylethylamine and triethylamine. Preferably, potassium carbonate or sodium carbonate is used. The amount of the base used is 1.0 to 50 equivalents, preferably 1.0 to 20 equivalents with respect to the compound of Formula (XVI).
Examples of the solvent include ether solvents such as THF, DME and dioxane; halogen-containing solvents such as dichloromethane and carbon tetrachloride; aromatic solvents such as benzene, toluene and xylene; and aprotic bipolar solvents such as DMF and DMSO. Preferably, DMF is used. The reaction temperature is thought to be 0° C. to 200° C., and is preferably 20° C. to 140° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 30 minutes and 30 hours.
Method H:
In cases where Y is represented by the following Formula (IIIa):




[wherein the symbols have the same meanings as described above]

the compounds of Formula (IX) can be synthesized by the following method:





[wherein the symbols have the same meanings as described above]

Steps 1 and 2:

By lithiation of a compound of Formula (XVII) in an appropriate solvent, a compound of Formula (XVIII) is obtained. By subsequently reacting this compound without isolation with a compound of Formula (XIX), a compound of Formula (XX) is obtained. The compounds of Formula (XVII) are normally available materials. Examples of the lithiating agent include lithium, n-butyllithium, sec-butyllithium and tert-butyllithium. Preferably, n-butyllithium is used. The amount of the lithiating agent used is 1.0 to 4.0 equivalents, preferably 1.0 to 2.2 equivalents with respect to the compound of Formula (XVII). The compounds of Formula (XIX) are normally available materials. The amount of the compound of Formula (XIX) used is 1.0 to 10 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (XVII).
Examples of the solvent include ether solvents such as ether, dioxane and THF, and preferably, THF is used. The reaction temperature in Step 1 is thought to be −100° C. to 0° C., and is preferably −78° C. to 0° C. The reaction temperature in Step 2 is thought to be −100° C. to 40° C., and is preferably −78° C. to 40° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and in Step 1, about 5 minutes to 2 hours is usually appropriate, and in Step 2, satisfactory results are usually obtained by selecting a reaction time between about 5 minutes and 24 hours.
Step 3
The compounds of Formula (IXc) can be synthesized by adding a base to a compound of Formula (XX) in an appropriate solvent, and subsequently adding R3-Z1 (wherein the symbols have the same meanings as described above) to conduct condensation. The compounds represented by R3-Z1 are normally available materials. The amount of R3-Z1 used is 1.0 to 20 equivalents, preferably 1.0 to 4.0 equivalents with respect to the compound of Formula (XX).
Examples of the base include metal hydrides such as sodium hydride and potassium hydride; inorganic bases such as potassium carbonate, sodium carbonate and cesium carbonate; organic metals such as butyllithium; and organic amines such as DBU, diisopropylethylamine and triethylamine. Preferably, sodium hydride is used. The amount of the base used is 1.0 to 50 equivalents, preferably 1.0 to 20 equivalents with respect to the compound of Formula (XX).
Examples of the solvent include ether solvents such as THF, DME and dioxane; halogen-containing solvents such as dichloromethane and carbon tetrachloride; aromatic solvents such as benzene, toluene and xylene; and aprotic bipolar solvents such as DMF and DMSO. Preferably, DMF or THF is used. The reaction temperature is thought to be −78° C. to 100° C., and is preferably −20° C. to 40° C. The reaction time may appropriately be selected depending on the conditions such as reaction temperature, and satisfactory results are usually obtained by selecting a reaction time between about 15 minutes and 30 hours.
The workup and purification of each step in the synthesis of the compounds represented by Formula (I) or pharmaceutically acceptable salts thereof can be carried out by an ordinary method. That is, as the workup, separation extraction, filtration or the like may be employed. As the purification, column chromatography, thin layer chromatography, recrystallization, reprecipitation, distillation or the like may be employed.
The therapeutic or prophylactic agents for multiple sclerosis according to the present invention have a glycine structure substituted with an allyl group or propargyl group, a substructure represented by Formula (II) or (III), and the 2,6-di-substituted benzoyl structure shown in Formula (I). These compounds have more excellent oral absorbability and in vivo stability than those disclosed in WO99/26923 mentioned in Background Art, and therefore exhibit therapeutic or prophylactic effects on multiple sclerosis when orally administered.
The oral absorbability and in vivo stability of the therapeutic or prophylactic agents of the present invention may be confirmed by using as an index bioavailability (BA) and clearance of the compound administered to an animal, but the method for confirmation is not restricted thereto.
The excellent effect of the therapeutic or prophylactic agents of the present invention on multiple sclerosis may be evaluated based on the effect to reduce the increase in the score of nerve paralysis by using mouse experimental autoimmune encephalomyelitis (EAE) model described in the literature “Int. Immunol., 9, 1243-1251 (1997)”. Experimental autoimmune encephalomyelitis is the animal model in which neuropathy such as hind limb paralysis due to demyelination in central nerve system is induced by immunizing an experimental animal with myelin basic protein or a partial peptide thereof. The symptoms and pathological findings are similar to those observed in human, and thus the model is widely used for the study of pharmacological effects of therapeutic or prophylactic agents for multiple sclerosis. However, the evaluation method is not restricted thereto.
The therapeutic or prophylactic agents according to the present invention suppress neuropathy such as hind limb paralysis induced by myelin basic protein or a partial peptide thereof, and therefore can be used for ameliorating multiple sclerosis, more specifically, acute multiple sclerosis, generalized multiple sclerosis, brainstem multiple sclerosis, multiple sclerosis in the spinal cord, asymptomatic multiple sclerosis or the like. Examples of the causative substance of multiple sclerosis include myelin proteins such as proteolipid protein (PLP); myelin oligodendrocyte glycoprotein (MOG); myelin basic protein (MBP); myelin-associated glycoprotein (MAG), myelin-associated oligodendrocytic basic protein (MBOP); citrullinated MBP (MBP C8 isomer in which six arginines are converted to citrullines by deimination), cyclic nucleotide phosphodiesterase (CNPase), alpha-B crystallin and the like. Infection by measles virus, herpes simplex virus, EB virus, retrovirus, human herpesvirus 6 or the like may also cause multiple sclerosis.
Further, the therapeutic or prophylactic agents according to the present invention suppress nerve paralysis due to demyelination in central nerve system, and therefore can be used for acute disseminated encephalomyelitis, adrenoleukodystrophy, adrenomyeloneuropathy, tropical spastic paraparesis, and Leber's hereditary optic atrophy, which are the primary demyelinating disease similar to multiple sclerosis.
Further, the therapeutic or prophylactic agents according to the present invention can be used for ameliorating abnormality of sensation (e.g., numbness, pain), vision (e.g., diplopia, partial blindness, loss of central vision, vertigo), movement (weakness, painful tonic spasm, rigidity, tremor) and nerve (e.g., elation, depressed state, mental disorders), which are the symptom accompanied by multiple sclerosis, as well as poorly coordinated movement (e.g., loss of equilibrium sense, slurred speech), extreme fatigue, alteration of intellectual functions, muscular weakness, paresthesia, Uthoff's phenomenon, voiding dysfunction and constipation.
The effect of the therapeutic or prophylactic agents according to the present invention on multiple sclerosis can be explained by the inhibition of leukocyte functions (e.g., adhesion and growth of cells) and inhibition of production of inflammatory mediators (e.g., cytokines and chemical mediators) by leukocytes. As the leukocytes, neutrophils, monocytes, lymphocytes, which are originated from peripheral blood, or established cell lines thereof or the like, are used. For the evaluations of the leukocyte functions and the inflammatory mediators, the methods described in, for example, Current Protocols in Immunology (John Wiley & Sons, Inc) are used, but the evaluation methods are not restricted thereto.
The therapeutic or prophylactic agents for multiple sclerosis according to the present invention can be used as a pharmaceutical for mammals (e.g., mouse, rat, hamster, rabbit, dog, monkey, bovine, ovine, human and the like).
When using the compound clinically, the drug may be the free form or a salt thereof per se, or an additive(s) such as a vehicle, stabilizer, preservative, buffering agent, solubilizer, emulsifier, diluent and/or isotonic agent, may be admixed appropriately. The drug may be produced by a conventional method by appropriately using these pharmaceutical carriers. Examples of the administration mode include oral preparations such as tablets, capsules, granules, powders and syrups; parenteral preparations such as inhalants, injection solutions, suppositories and liquids; or topical preparations such as ointments, creams and patches. Further, known sustained-release preparations are also included.
The therapeutic or prophylactic agent for multiple sclerosis according to the present invention preferably contains the above-described effective ingredient in an amount of 0.001 to 90% by weight, more preferably 0.01 to 70% by weight. Although the dose may be selected depending on the symptoms, age, body weight, sex, administration method and the like, in case of an injection solution, a dose of 0.01 mg to 25 g, preferably 0.1 mg to 10 g, and in case of an oral preparation, a dose of 0.1 mg to 50 g, preferably 1 mg to 20 g, in terms of the effective ingredient, respectively, may be administered to an adult per day. Although the dosing period and dosing intervals of the therapeutic or prophylactic agent of the present invention may be altered depending on various situations, administration method such as divided administration, daily administration, intermittent administration, short-term high-dose administration, repeated administration or the like may be employed. For example, in case of an oral administration, the agent may preferably be administered once or dividedly in several times a day (especially two to three times a day). The agent may also be administered by intravenous drip infusion over a long time.
Examples of the pharmaceutically acceptable carrier or diluent include binders (syrups, gelatin, gum Arabic, sorbitol, polyvinyl chloride, tragacanth and the like), vehicles (sucrose, lactose, corn starch, calcium phosphate, sorbitol, glycine and the like), lubricants (magnesium stearate, polyethylene glycol, talc, silica and the like).
The therapeutic or prophylactic agent for multiple sclerosis according to the present invention may be used alone, or may be blended with or used together with other drug(s) for therapy or prophylaxis of the disease, or for alleviation or suppression of symptoms, or for complementation or enhancement of the prophylactic or therapeutic effect, or for decreasing the dose.
Examples of the drugs which may be used together in therapy or prophylaxis of multiple sclerosis include corticosteroids (prednisolone, methylprednisolone and the like), immunosuppressants (methotrexate, azathiopurine, cyclophosphamide, cyclosporin A, tacrolimus, mizoribine, leflunomide and the like), interferon preparations (interferon α, interferon β and the like), copolymer I, immunoglobulins, mitoxantrone, glatiramer acetate, T cell receptor vaccines, adhesion molecule inhibitors, analgesics (indomethacin, diclofenac and the like), muscle relaxants (tizanidine, eperisone, afloqualone, baclofen, diazepam, dantrolene sodium and the like), anticonvulsants (carbamazepine, phenyloin, clonazepam, amitriptyline and the like), therapeutic agents for urinary incontinence or urinary frequency (oxybutynin, propiverine, flavoxate, distigmine and the like) and the like.
EXAMPLES
The present invention will now be described more concretely by way of examples thereof. Abbreviations used herein mean the following compounds.
Abbreviations:


    THF: tetrahydrofuran
    DMF: dimethylformamide
    Boc: tert-butoxycarbonyl
    DMF: dimethylformamide
    NMP: N-methylpyrrolidone
    DME: dimethoxyethane
    DMSO: dimethylsulfoxide
    BOP: benzotriazol-1-yloxytris(dimethylamino)-phosphonium hexafluoro phosphate
    EDC: 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride
    DBU: 1,8-diazabicyclo[5.4.0]undeca-7-ene
    HOBT: 1-hydroxybenzotriazole


Reference Example 1
Tetrahydro-4-(4-iodophenyl)-2H-pyran-4-ol




Under an argon atmosphere, a solution of n-butyllithium (2.59M, in hexane) (8.76 ml) was added dropwise to a solution of 1,4-diiodobenzene (7.49 g) in anhydrous THF (50 ml) at −78° C., and the resulting mixture was stirred at −78° C. for 30 minutes. Tetrahydro-4H-pyran-4-one (2.09 ml) was added dropwise thereto and the resulting mixture was stirred at −78° C. for 1.5 hours. After stirring the mixture for another 3 hours at room temperature, water was added, and the resulting mixture was extracted with ethyl acetate. Organic layer was washed once with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was recrystallized from cyclohexane/ethyl acetate mixed solvent to obtain tetrahydro-4-(4-iodophenyl)-2H-pyran-4-ol (4.12 g).
Reference Example 2
Tetrahydro-4-(4-iodophenyl)-4-methoxy-2H-pyran




Under an argon atmosphere, a solution of tetrahydro-4-(4-iodophenyl)-2H-pyran-4-ol (2.99 g) in anhydrous DMF (10 ml) was added dropwise to a suspension of sodium hydride (60 wt %) (432 mg) in anhydrous DMF (20 ml) at room temperature, and the resulting mixture was stirred at room temperature for 75 minutes. Methyl iodide (0.92 ml) was added dropwise to the reaction solution and the resulting mixture was stirred at room temperature for 8.5 hours. Water was added thereto and the resulting mixture was extracted twice with ethyl acetate. Organic layers were washed with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=10/1) to obtain tetrahydro-4-(4-iodophenyl)-4-methoxy-2H-pyran (2.87 g). NMR (H1, CDCl3): δ 1.90-2.02 (4H, m), 2.97 (3H, s), 3.80-3.88 (4H, m), 7.14 (1H, d, J=8.5 Hz), 7.70 (1H, d, J=8.5 Hz)
Reference Example 3
4-Ethoxy-tetrahydro-4-(4-iodophenyl)-2H-pyran




In the same manner as in Reference Example 2, tetrahydro-4-(4-iodophenyl)-2H-pyran-4-ol (302 mg) and iodoethane (0.119 ml) were reacted to obtain 4-ethoxy-tetrahydro-4-(4-iodophenyl)-2H-pyran (269 mg).
Reference Example 4
4-(4-Bromophenyl)-tetrahydro-4-(methoxymethyl)-2H-pyran




(1) Under an argon atmosphere, sodium hydride (60 wt %) (240 mg) was added to a solution of 2-(4-bromophenyl)acetic acid methyl ester (916 mg) in anhydrous DMF (20 ml) at 0° C., and the resulting mixture was stirred at 0° C. for 30 minutes. To the reaction solution, bis(2-bromoethyl)ether (0.70 mL) was added, and the resulting mixture was stirred at 0° C. for 1 hour. Sodium hydride (60 wt %) (240 mg) was added thereto and the resulting mixture was further stirred at 0° C. for 1 hour. Saturated aqueous ammonium chloride solution was added thereto, and the resulting mixture was extracted with ethyl acetate. Organic layer was washed once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=4/1) to obtain 4-(4-bromophenyl)-tetrahydro-2H-pyran-4-carboxylic acid methyl ester (472 mg).

(2) Under an argon atmosphere, a solution of 4-(4-bromophenyl)-tetrahydro-2H-pyran-4-carboxylic acid methyl ester (472 mg) obtained in (1) in anhydrous THF (8.7 mL) was added to a 1.0 M solution of diisobutylaluminum hydride in hexane (8.7 mL) at 0° C., and the resulting mixture was stirred at 0° C. for 30 minutes. After adding methanol (2.1 ml) to the reaction solution, 1N hydrochloric acid (8.7 mL) was added thereto and the resulting mixture was extracted 4 times with diethyl ether. Organic layers were washed with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to obtain (4-(4-bromophenyl)-tetrahydro-2H-pyran-4-yl)methanol (405 mg).

(3) Under an argon atmosphere, sodium hydride (60 wt %) (88 mg) was added to a solution of (4-(4-bromophenyl)-tetrahydro-2H-pyran-4-yl)methanol (397 mg) obtained in (2) in anhydrous DMF (1.5 mL) at 0° C., and the resulting mixture was stirred at 0° C. for 30 minutes. Methyl iodide (0.13 ml) was added dropwise to the reaction solution, and the resulting mixture was stirred at room temperature for 2 hours. Saturated brine was added thereto and the resulting mixture was extracted 3 times with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=5/1) to obtain 4-(4-bromophenyl)-tetrahydro-4-(methoxymethyl)-2H-pyran (399 mg).

Reference Example 5
4-(4-Iodophenyl)-4-methoxyoxepane




(1) Under an argon atmosphere, a solution of n-butyllithium (1.50 M, in hexane) (0.5 ml) was added dropwise to a solution of 1,4-diiodobenzene (250 mg) in anhydrous THF (3 ml) at −78° C., and the resulting mixture was stirred at −78° C. for 30 minutes. Oxepan-4-one (151 mg) was added to the reaction solution, and the resulting mixture was stirred at −78° C. for 1 hour. Saturated aqueous ammonium chloride solution was added thereto, and the resulting mixture was extracted with ethyl acetate. Organic layer was washed with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=5/1) to obtain 4-(4-iodophenyl)oxepan-4-ol (89 mg).

(2) Under an argon atmosphere, a solution of 4-(4-iodophenyl)oxepan-4-ol (86 mg) obtained in (1) in anhydrous DMF (1.0 mL) was added to a suspension of sodium hydride (60 wt %) (16 mg) in anhydrous DMF (1.0 ml) at 0° C., and the resulting mixture was stirred at 0° C. for 30 minutes. Methyl iodide (0.025 ml) was added dropwise to the reaction solution, and the resulting mixture was stirred at room temperature for 10 hours. Saturated brine was added thereto, and the resulting mixture was extracted 3 times with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=6/1) to obtain 4-(4-iodophenyl)-4-methoxyoxepane (63 mg).

Reference Example 6
2-(4-Iodophenoxy)pyrimidine




Under an argon atmosphere, potassium carbonate (207 mg) was added to a solution of 4-iodophenol (220 mg) and 2-chloropyrimidine (114 mg) in DMF (1 ml), and the resulting mixture was stirred at 120° C. for 3 hours. The reaction solution was cooled to room temperature and saturated brine was added thereto, followed by extracting the resulting mixture with chloroform. Organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=3/1) to obtain 2-(4-iodophenoxy)pyrimidine (288 mg). NMR (H1, CDCl3): δ 6.97-7.00 (2H, m), 7.06 (1H, t, J=4.6 Hz), 7.73-7.75 (2H, m), 8.57 (2H, d, J=4.6 Hz)
Reference Example 7
2-(4-Iodophenoxy)-5-ethylpyrimidine




In the same manner as in Reference Example 6, 4-iodophenol (220 mg) and 5-ethyl-2-chloropyrimidine (0.121 ml) were reacted in the presence of potassium carbonate (415 mg) to obtain 2-(4-iodophenoxy)-5-ethylpyrimidine (256 mg).
Reference Example 8
2-(4-Iodophenoxy)-4-methoxypyrimidine




Under an argon atmosphere, sodium hydride (108 mg) was added to a solution of 4-iodophenol (220 mg) and 2-chloro-4-methoxypyrimidine (168 mg) in anhydrous DMF (10 ml), and the resulting mixture was stirred at 125° C. for 9 hours. The reaction solution was cooled to room temperature and water was added thereto, followed by extracting the resulting mixture with ethyl acetate. Organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=5/1) to obtain 2-(4-iodophenoxy)-4-methoxypyrimidine (312 mg).
Reference Example 9
2-(4-Iodophenoxy)-4,6-dimethoxypyrimidine




In the same manner as in Reference Example 8, 4-iodophenol (223 mg) and 2-chloro-4,6-dimethoxypyrimidine (192 mg) were reacted by using sodium hydride to obtain 2-(4-iodophenoxy)-4,6-dimethoxypyrimidine (322 mg).
Reference Example 10
2-(4-Iodophenoxy)-4,6-dimethylpyrimidine




(1) Under an argon atmosphere, phosphorus oxychloride (2 ml) was added to 4,6-dimethyl-2-hydroxypyrimidine (400 mg), and the resulting mixture was stirred for 1 hour while heating the mixture to reflux. The reaction solution was cooled to room temperature, and the cooled solution was added in small portions to water. After adding sodium hydrogen carbonate in small portions to the resulting mixture to neutralize it, the mixture was extracted with ethyl acetate. Organic layer was washed twice with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to obtain 2-chloro-4,6-dimethylpyrimidine (350 mg).

(2) In the same manner as in Reference Example 8, 4-iodophenol (223 mg) and 2-chloro-4,6-dimethylpyrimidine (157 mg) were reacted by using sodium hydride to obtain 2-(4-iodophenoxy)-4,6-dimethylpyrimidine (226 mg).

Reference Example 11
N-(4-Iodophenyl)pyrimidin-2-amine




Under an argon atmosphere, 2-chloropyrimidine (16.5 g) and acetic acid (11.7 ml) were added to a solution of 4-iodoaniline (30 g) in dioxane (500 ml), and the resulting mixture was stirred for 13 hours while heating the mixture to reflux. The reaction solution was cooled to room temperature and saturated aqueous sodium hydrogen carbonate solution was added thereto, followed by extracting the resulting mixture 4 times with ethyl acetate. Organic layers were washed 3 times with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=4/1). The product was recrystallized from dichloromethane/hexane mixed solvent to obtain N-(4-iodophenyl)pyrimidin-2-amine (22.27 g). NMR (H1, CDCl3): δ 6.73 (1H, t, J=4.6 Hz), 7.18 (1H, brs), 7.40-7.42 (2H, m), 7.59-7.61 (2H, m), 8.41 (2H, d, J=4.6 Hz)
Reference Example 12
N-(4-Bromophenyl)pyrimidin-2-amine




Under an argon atmosphere, 2-chloropyrimidine (2.68 g) and acetic acid (1.97 ml) were added to a solution of 4-bromoaniline (4.03 g) in dioxane (200 ml), and the resulting mixture was stirred for 3 hours while heating the mixture to reflux. Saturated aqueous sodium hydrogen carbonate solution was added in small portions to the reaction solution to neutralize it, and the resulting mixture was concentrated. Ethyl acetate (500 ml) was added to the residue and the resulting mixture was stirred at room temperature for 10 minutes, followed by removing insoluble matter by filtration. The filtrate was washed with saturated aqueous sodium hydrogen carbonate solution and with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was recrystallized from ethyl acetate to obtain N-(4-bromophenyl)pyrimidin-2-amine (3.02 g).
Reference Example 13
N-(4-Iodophenyl)-N-methylpyrimidin-2-amine




Under an argon atmosphere, a solution of N-(4-iodophenyl)pyrimidin-2-amine (1.47 g) in anhydrous DMF (10 ml) was added dropwise to a suspension of sodium hydride (218 mg) in anhydrous DMF (8 ml), and the resulting mixture was stirred at room temperature for 75 minutes. Methyl iodide (0.37 ml) was added dropwise to the reaction solution and the resulting mixture was stirred at room temperature for another 1 hour. Water was added thereto and the resulting mixture was extracted with ethyl acetate. Organic layer was washed twice with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was recrystallized from hexane to obtain N-(4-iodophenyl)-N-methylpyrimidin-2-amine (1.38 g). NMR (H1, CDCl3): δ 3.49 (3H, s), 6.58 (1H, t, J=4.6 Hz), 7.07-7.09 (2H, m), 7.67-7.69 (2H, m), 8.32 (2H, d, J=4.6 Hz)
Reference Example 14
N-(4-Iodophenyl)-N-ethylpyrimidin-2-amine




Under an argon atmosphere, a solution of N-(4-iodophenyl)pyrimidin-2-amine (255 mg) in anhydrous DMF (1 ml) was added dropwise to a suspension of sodium hydride (40 mg) in anhydrous DMF (1 ml), and the resulting mixture was stirred at room temperature for 75 minutes. Ethyl iodide (0.10 ml) was added dropwise to the reaction solution and the resulting mixture was stirred at room temperature overnight. Saturated brine was added thereto and the resulting mixture was extracted with chloroform. Organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/chloroform=1/10) to obtain N-(4-iodophenyl)-N-ethylpyrimidin-2-amine (264 mg). NMR (H1, CDCl3): δ 1.23 (3H, t, J=6.8 Hz), 4.01 (2H, q, J=6.8 Hz), 6.57 (1H, t, J=4.9 Hz), 7.03-7.06 (2H, m), 7.70-7.74 (2H, m), 8.32 (2H, d, J=4.9 Hz)
Reference Example 15
N-(4-Iodophenyl)-N-(2-methoxyethyl)pyrimidin-2-amine




Under an argon atmosphere, 2-bromoethylmethyl ether (0.14 ml) and sodium hydride (48 mg) were added to a solution of N-(4-iodophenyl)pyrimidin-2-amine (300 mg) in anhydrous DMF (1 ml), and the resulting mixture was stirred at room temperature overnight. Saturated brine was added to the reaction solution and the resulting mixture was extracted with chloroform, followed by drying the organic layer over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/chloroform=1/10) to obtain N-(4-iodophenyl)-N-(2-methoxyethyl)pyrimidin-2-amine (233 mg). NMR (H1, CDCl3): δ 3.32 (3H, s), 3.63 (2H, t, J=5.9 Hz), 4.14 (2H, t, J=5.9 Hz), 6.59 (1H, t, J=4.9 Hz), 7.09-7.13 (2H, m), 7.70-7.73 (2H, m), 8.32 (2H, d, J=4.9 Hz)
Reference Example 16
N-(4-Iodophenyl)-N-isopropylpyrimidin-2-amine




Under an argon atmosphere, a solution of N-(4-iodophenyl)pyrimidin-2-amine (8.00 g) in anhydrous DMF (50 ml) was added dropwise to a suspension of sodium hydride (1.08 g) in anhydrous DMF (200 ml), and the resulting mixture was stirred at room temperature for 80 minutes. To the reaction solution, 2-iodopropane (4.03 ml) was added, and the resulting mixture was stirred at room temperature for 2 hours. Sodium hydride (1.08 g) was added to the reaction solution and thereafter 2-iodopropane (4.03 ml) was added dropwise thereto, followed by stirring the resulting mixture at room temperature for 6 hours. Water was added to the reaction solution and the resulting mixture was extracted twice with ethyl acetate. Organic layers were washed 4 times with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane, cyclohexane/ethyl acetate=50/1). The obtained solid was recrystallized from hexane to obtain N-(4-iodophenyl)-N-isopropylpyrimidin-2-amine (7.06 g). NMR (H1, CDCl3): δ 1.14 (3H, s), 1.16 (3H, s), 5.12-5.19 (1H, m), 6.52 (1H, t, J=4.6 Hz), 6.88-6.92 (2H, m), 7.74-7.77 (2H, m), 8.29 (2H, d, J=4.6 Hz)
Reference Example 17
(4-Acetoxybenzyl)-(4-iodophenyl)pyrimidin-2-ylamine




Under an argon atmosphere, a solution of N-(4-iodophenyl)pyrimidin-2-amine (68 mg) in anhydrous DMF (1.0 ml) was added dropwise to a solution of sodium hydride (116 mg) in anhydrous DMF (1.0 ml), and the resulting mixture was stirred at room temperature for 30 minutes. To the reaction solution, a solution of 4-acetoxybenzyl chloride (0.04 ml) in anhydrous DMF (0.5 ml) was added, and the resulting mixture was stirred at room temperature overnight. Saturated brine was added to the reaction solution and the resulting mixture was extracted with chloroform. Organic layer was dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=6/1) to obtain (4-acetoxybenzyl)-(4-iodophenyl)pyrimidin-2-ylamine (67 mg). NMR (H1, CDCl3): δ 2.28 (3H, s), 5.22 (2H, s), 6.63 (1H, t, J=4.6 Hz), 6.98-7.02 (4H, m), 7.26 (2H, d, J=8.1 Hz), 7.64-7.67 (2H, m), 8.34 (2H, d, J=4.6 Hz)
Reference Example 18
3-(N-(4-Iodophenyl)-N-(pyrimidin-2-yl)amino)propanenitrile




Under an argon atmosphere, a solution of N-(4-iodophenyl)pyrimidin-2-amine (100 mg) in anhydrous DMF (1.0 ml) was added to a suspension of sodium hydride (16 mg) in anhydrous DMF (1.0 ml), and the resulting mixture was stirred at room temperature for 30 minutes. To the reaction solution, a solution of 3-bromopropionitrile (0.04 ml) in anhydrous DMF (0.5 ml) was added, and the resulting mixture was stirred at room temperature overnight. Saturated brine was added to the reaction solution and the resulting mixture was extracted with chloroform. Organic layer was dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent: hexane/chloroform=1/10) to obtain 3-(N-(4-iodophenyl)-N-(pyrimidin-2-yl)amino)propanenitrile (94 mg). NMR (H1, CDCl3): δ 2.82 (2H, t, J=6.8 Hz), 4.24 (2H, t, J=6.8 Hz), 6.68 (1H, t, J=4.9 Hz), 7.06-7.10 (2H, m), 7.74-7.78 (2H, m), 8.35 (2H, d, J=4.9 Hz)
Reference Example 19
N-Benzyl-N-(4-iodophenyl)pyrimidin-2-amine




Under an argon atmosphere, N-(4-iodophenyl)pyrimidin-2-amine (75 mg) was added to a suspension of sodium hydride (16 mg) in anhydrous DMF (3 ml), and the resulting mixture was stirred at room temperature for 30 minutes. The reaction solution was cooled to 0° C. and benzyl bromide (0.039 ml) was added thereto, followed by stirring the resulting mixture at room temperature for 1 hour. Saturated brine was added to the reaction solution and the resulting mixture was extracted 3 times with ethyl acetate. Organic layers were washed 3 times with water and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:ethyl acetate/hexane=1/15) to obtain N-benzyl-N-(4-iodophenyl)pyrimidin-2-amine (67 mg).
Reference Example 20
N-(4-Bromophenyl)-N-(4-methoxybenzyl)pyrimidin-2-amine




Under an argon atmosphere, N-(4-bromophenyl)pyrimidin-2-amine (75 mg) was added to a suspension of sodium hydride (16 mg) in anhydrous DMF (3 ml), and the resulting mixture was stirred at room temperature for 30 minutes. The reaction solution was cooled to 0° C. and 4-methoxybenzyl chloride (0.045 ml) was added thereto, followed by stirring the resulting mixture at room temperature for 1 hour. Saturated brine was added to the reaction solution and the resulting mixture was extracted 3 times with ethyl acetate. Organic layers were washed 3 times with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:ethyl acetate/hexane=1/10) to obtain N-(4-bromophenyl)-N-(4-methoxybenzyl)pyrimidin-2-amine (107 mg).
Reference Example 21
N-(4-Bromophenyl)-N-butylpyrimidin-2-amine




Under an argon atmosphere, N-(4-bromophenyl)pyrimidin-2-amine (160 mg) was added to a suspension of sodium hydride (33 mg) in anhydrous DMF (3 ml), and the resulting mixture was stirred at room temperature for 30 minutes. The reaction solution was cooled to 0° C. and n-butyl iodide (0.080 ml) was added thereto, followed by stirring the resulting mixture at room temperature for 1 hour. Saturated brine was added to the reaction solution and the resulting mixture was extracted 3 times with ethyl acetate. Organic layers were washed 3 times with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:ethyl acetate/hexane=1/10) to obtain N-(4-bromophenyl)-N-butylpyrimidin-2-amine (194 mg).
Reference Example 22
N-(4-Bromophenyl)-N-((pyridin-3-yl)methyl)pyrimidin-2-amine




Under an argon atmosphere, N-(4-bromophenyl)pyrimidin-2-amine (200 mg) was added to a suspension of sodium hydride (48 mg) in anhydrous DMF (8 ml), and the resulting mixture was stirred at room temperature for 30 minutes. The reaction solution was cooled to 0° C., and 3-chloromethylpyridine hydrochloride (600 mg) and triethylamine (1.00 ml) were added thereto, followed by stirring the resulting mixture at room temperature for 2 hours. Saturated brine was added to the reaction solution and the resulting mixture was extracted 3 times with ethyl acetate. Organic layers were washed 3 times with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:ethyl acetate/hexane=3/1) to obtain N-(4-bromophenyl)-N-((pyridin-3-yl)methyl)pyrimidin-2-amine (232 mg). NMR (H1, CDCl3): δ 5.23 (2H, s), 6.65 (1H, t, J=4.6 Hz), 7.08-7.12 (2H, m), 7.20 (1H, dd, J=7.8, 4.9 Hz), 7.46-7.50 (2H, m), 7.59-7.61 (1H, m), 8.35 (2H, d, J=4.6 Hz), 8.49 (1H, dd, J=4.9, 1.5 Hz), 8.54 (1H, d, J=2.2 Hz)
Reference Example 23
N-(4-Bromophenyl)-N-((thiazol-4-yl)methyl)pyrimidin-2-amine




Under an argon atmosphere, N-(4-bromophenyl)pyrimidin-2-amine (200 mg) was added to a suspension of sodium hydride (48 mg) in anhydrous DMF (8 ml), and the resulting mixture was stirred at room temperature for 30 minutes. The reaction solution was cooled to 0° C., and thiazoylmethyl chloride hydrochloride (816 mg) and triethylamine (1.00 ml) were added thereto, followed by stirring the resulting mixture at room temperature for 2 hours. Saturated brine was added to the reaction solution and the resulting mixture was extracted 3 times with ethyl acetate. Organic layers were washed 3 times with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:ethyl acetate/hexane=1/3) to obtain N-(4-bromophenyl)-N-((thiazol-4-yl)methyl)pyrimidin-2-amine (190 mg).
Reference Example 24
N-(4-Iodophenyl)-4-methoxy-N-methylpyrimidin-2-amine




(1) Under an argon atmosphere, sodium hydride (100 mg) was added to a solution of 4-iodoaniline (220 mg) and 2-chloro-4-methoxypyrimidine (145 mg) in anhydrous DMF (10 ml), and the resulting mixture was stirred at 125° C. for 21 hours. The reaction solution was cooled to room temperature and water was added thereto, followed by extracting the resulting mixture with ethyl acetate. Organic layer was washed twice with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=10/1) to obtain N-(4-iodophenyl)-4-methoxypyrimidin-2-amine (46 mg).

(2) Under an argon atmosphere, N-(4-iodophenyl)-4-methoxypyrimidin-2-amine (46 mg) was added to a suspension of sodium hydride (11 mg) in anhydrous DMF (5 ml), and the resulting mixture was stirred at room temperature for 5 minutes. Methyl iodide (0.0096 ml) was added dropwise to the reaction solution, and the resulting mixture was stirred at room temperature for 23 hours. Water was added thereto and the resulting mixture was extracted with ethyl acetate. Organic layer was washed twice with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:hexane/ethyl acetate=3/1) to obtain N-(4-iodophenyl)-4-methoxy-N-methylpyrimidin-2-amine (46 mg).

Reference Example 25
N-(4-Iodophenyl)-4,6-dimethoxy-N-methylpyrimidin-2-amine




(1) In the same manner as in Reference Example 24-(1), 4-iodoaniline (220 mg) and 2-chloro-4,6-dimethoxypyrimidine (200 mg) were reacted in the presence of sodium hydride to obtain N-(4-iodophenyl)-4,6-dimethoxypyrimidin-2-amine (141 mg).

(2) In the same manner as in Reference Example 24-(2), sodium hydride (16 mg), N-(4-iodophenyl)-4,6-dimethoxypyrimidin-2-amine (140 mg) and methyl iodide (0.024 ml) were reacted to obtain N-(4-iodophenyl)-4,6-dimethoxy-N-methylpyrimidin-2-amine (118 mg).

Reference Example 26
N-(4-Bromophenyl)-N-phenylpyrimidin-2-amine




Under an argon atmosphere, a suspension of N-(4-bromophenyl)pyrimidin-2-amine (250 mg), copper iodide (1.9 mg), trans-1,2-cyclohexanediamine (0.015 ml) and sodium-tert-butoxide (144 mg) in dioxane (1 ml) was stirred at 110° C. for 22 hours in a pressure-resistant test tube. The reaction solution was filtered and the filtrate was concentrated. The residue was purified by thin layer chromatography (silica gel, mobile phase: chloroform/ethyl acetate=5/1) to obtain N-(4-bromophenyl)-N-phenylpyrimidin-2-amine (56 mg).
Reference Example 27
Trifluoromethanesulfonic acid 4-[pyrimidin-2-yl-(tetrahydropyran-4-yl)amino]phenyl ester




(1) Acetic acid (0.856 ml) was added to a solution of p-anisidine (1.23 g) and 2-chloropyrimidine (1.72 g) in dioxane (20 ml), and the resulting mixture was stirred overnight while heating the mixture to reflux. After cooling the reaction solution to room temperature, 1 N aqueous sodium hydroxide solution was added thereto and the resulting mixture was extracted 3 times with chloroform, followed by drying the organic layers over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was reprecipitated from chloroform/hexane mixed solvent to obtain N-(4-methoxyphenyl)pyrimidin-2-amine (1.39 g).

(2) Under an argon atmosphere, p-toluenesulfonyl chloride (3.82 g) was added to a solution of tetrahydro-2H-pyran-4-ol (2.00 g) in pyridine (50 ml) at 0° C., and the resulting mixture was stirred at room temperature overnight. After adding 1 N hydrochloric acid thereto, the resulting mixture was extracted 3 times with ethyl acetate. Organic layers were washed 3 times with water and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:ethyl acetate/hexane=1/6) to obtain tetrahydro-2H-pyran-4-yl-4-methylbenzenesulfonate (2.92 g).

(3) Under an argon atmosphere, N-4-(methoxyphenyl)pyrimidin-2-amine (402 mg) was added to a suspension of sodium hydride (120 mg) in anhydrous DMF (15 ml), and the resulting mixture was stirred at room temperature for 30 minutes. A solution of tetrahydro-2H-pyran-4-yl-4-methylbenzenesulfonate (2.92 g) in anhydrous DMF (10 ml) was added to the reaction solution, and the resulting mixture was stirred at 50° C. for 24 hours. Sodium hydride (120 mg) was further added to the reaction solution, and the resulting mixture was stirred at 50° C. for 24 hours. The solution was cooled to room temperature, and saturated brine was added thereto, followed by extracting the resulting mixture 3 times with ethyl acetate. Organic layers were washed 3 times with water and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:ethyl acetate/hexane=1/3) to obtain N-(tetrahydro-2H-pyran-4-yl)-N-(4-methoxyphenyl)pyrimidin-2-amine (342 mg).

(4) A mixture of N-(tetrahydro-2H-pyran-4-yl)-N-(4-methoxyphenyl)pyrimidin-2-amine (342 mg) and pyridine hydrochloride (2.00 g) was heated to 170° C. and stirred for 1 hour. Pyridine hydrochloride (1.00 g) was further added to the reaction solution, and the resulting mixture was stirred at 170° C. for 1 hour. The reaction solution was allowed to cool to room temperature and saturated brine was added thereto, followed by extracting the resulting mixture 3 times with ethyl acetate. Organic layers were washed 3 times with water and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. To a suspension of the obtained residue and potassium carbonate (498 mg) in THF (15 ml), N-phenylbis(trifluoromethanesulfonimide) (514 mg) was added, and the resulting mixture was stirred at room temperature for 5 hours. Saturated brine was added to the reaction solution, and the resulting mixture was extracted 3 times with ethyl acetate, followed by drying the organic layers over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:ethyl acetate/hexane=1/5) to obtain trifluoromethanesulfonic acid 4-[pyrimidin-2-yl-(tetrahydropyran-4-yl)amino]phenyl ester (228 mg). NMR (H1, CDCl3): δ 1.52-1.61 (2H, m), 1.83-1.87 (2H, m), 3.57 (2H, dt, J=12.0, 1.6 Hz), 4.00 (2H, dd, J=11.6, 4.8 Hz), 4.97-5.03 (1H, m), 6.59 (1H, t, J=4.8 Hz), 7.19-7.23 (2H, m), 7.34-7.37 (2H, m), 8.29 (2H, d, J=4.8 Hz)

Reference Example 28
N-(4-Iodophenyl)-N-(3-methyl-2-butenyl)pyrimidin-2-amine




In the same manner as in Reference Example 13, N-(4-iodophenyl)pyrimidin-2-amine (150 mg) and 1-bromo-3-methyl-2-butene (90 mg) were reacted in the presence of sodium hydride to obtain N-(4-iodophenyl)-N-(3-methyl-2-butenyl)pyrimidin-2-amine (175 mg).
Reference Example 29
N-(Cyclopropylmethyl)-N-(4-iodophenyl)pyrimidin-2-amine




In the same manner as in Reference Example 13, N-(4-iodophenyl)pyrimidin-2-amine (150 mg) and cyclopropylmethyl bromide (82 mg) were reacted in the presence of sodium hydride to obtain N-(cyclopropylmethyl)-N-(4-iodophenyl)pyrimidin-2-amine (162 mg).
Reference Example 30
N-(4-Iodophenyl)-N-isobutylpyrimidin-2-amine




In the same manner as in Reference Example 13, N-(4-iodophenyl)pyrimidin-2-amine (150 mg) and isobutyl bromide (83 mg) were reacted in the presence of sodium hydride to obtain N-(4-iodophenyl)-N-isobutylpyrimidin-2-amine (167 mg).
Reference Example 31
N-(4-Iodophenyl)-N-propylpyrimidin-2-amine




In the same manner as in Reference Example 13, N-(4-iodophenyl)pyrimidin-2-amine (300 mg) and propyl bromide (0.11 ml) were reacted in the presence of sodium hydride to obtain N-(4-iodophenyl)-N-propylpyrimidin-2-amine (348 mg).
Reference Example 32
N-(4-Iodophenyl)-N-((pyridin-4-yl)methyl)pyrimidin-2-amine




In the same manner as in Reference Example 22, N-(4-iodophenyl)pyrimidin-2-amine (300 mg) and 4-bromomethylpyridine hydrobromide (307 mg) were reacted in the presence of sodium hydride to obtain N-(4-iodophenyl)-N-((pyridin-4-yl)methyl)pyrimidin-2-amine (93 mg).
Reference Example 33
N-(4-Iodophenyl)-N-((pyridin-2-yl)methyl)pyrimidin-2-amine




In the same manner as in Reference Example 22, N-(4-iodophenyl)pyrimidin-2-amine (300 mg) and 2-bromomethylpyridine hydrobromide (307 mg) were reacted in the presence of sodium hydride to obtain N-(4-iodophenyl)-N-((pyridin-2-yl)methyl)pyrimidin-2-amine (282 mg).
Reference Example 34
2-Amino-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




(1) Allylglycine (1.82 g) was dissolved in 1N aqueous sodium hydroxide solution (60 ml), and di-tert-butyl dicarbonate (4.15 g) was added thereto, followed by stirring the resulting mixture at room temperature for 11 hours. Di-tert-butyl dicarbonate (4.15 g) was further added to the reaction solution and the resulting mixture was stirred at room temperature overnight. After adding water to the reaction solution and washing it with ether, the solution was acidified with 3N hydrochloric acid. The solution was extracted twice with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was recrystallized from hexane/ethyl acetate mixed solvent to obtain N-Boc-allylglycine (3.09 g).

(2) Trimethylsilyldiazomethane (2N, in hexane) (12 ml) was added dropwise to a solution of N-Boc-allylglycine (3.09 g) in dichloromethane/methanol (2/1) mixture (30 ml), and the resulting mixture was stirred at room temperature for 3 hours. After concentrating the reaction solution, the residue was purified by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=20/1→10/1) to obtain N-Boc-allylglycine methyl ester (3.11 g). NMR (H1, CDCl3): δ 2.43-2.55 (2H, m), 3.72 (3H, s), 4.34-4.39 (1H, brm), 5.02 (1H, brs), 5.09-5.13 (2H, m), 5.62-5.72 (1H, m)

(3) Under an argon atmosphere, palladium acetate (54 mg) and tris(2-methylphenyl)phosphine (70 mg) were added to a suspension of N-Boc-allylglycine methyl ester (1.03 g), N-(4-iodophenyl)-N-methylpyrimidin-2-amine (1.40 g) and potassium carbonate (933 mg) in DMF (15 ml), and the resulting mixture was stirred at 80° C. overnight. The reaction solution was allowed to cool to room temperature and ethyl acetate was added thereto. The solution was washed 3 times with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=20/1→4/1). The obtained solid was recrystallized from hexane/ethyl acetate mixed solvent to obtain 2-tert-butoxycarbonylamino-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (976 mg).

(4) Trifluoroacetic acid (2 ml) was added to a solution of 2-tert-butoxycarbonylamino-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (976 mg) in dichloromethane (20 ml), and the resulting mixture was stirred at room temperature for 4.5 hours. Water was added to the reaction solution, and sodium hydrogen carbonate was added thereto in small portions to neutralize it, followed by extracting the resulting solution twice with chloroform. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain 2-amino-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (599 mg). NMR (H1, CDCl3): δ 2.58-2.64 (2H, brm), 3.48-3.58 (1H, brm), 3.52 (3H, s), 3.75 (3H, s), 6.07-6.14 (1H, m), 6.49 (1H, d, J=5.6 Hz), 6.57 (1H, t, J=4.6 Hz), 7.26 (2H, d, J=8.1 Hz), 7.38 (2H, d, J=8.3 Hz), 8.34 (2H, d, J=4.6 Hz)

Reference Example 35
2-(2,6-Dichlorobenzamido)pent-4-enoic acid methyl ester




(1) Allylglycine (10.11 g) was dissolved in a mixed solvent of 2N aqueous sodium hydroxide solution (176 ml) and dioxane (175 ml), and 2,6-dichlorobenzoyl chloride (15.10 ml) was added dropwise thereto, followed by stirring the resulting mixture at room temperature for 10 hours. After concentrating the reaction solution to remove dioxane, water (150 ml) was added thereto and the resulting solution was washed with ether. Aqueous layer was acidified by adding 3N hydrochloric acid in small portions thereto, and extracted 3 times with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was recrystallized from hexane/ethyl acetate mixed solvent to obtain 2-(2,6-dichlorobenzamido)pent-4-enoic acid (23.48 g).

(2) Under an argon atmosphere, a solution of 2-(2,6-dichlorobenzamido)pent-4-enoic acid (23.48 g) in methanol (250 ml) was cooled to 0° C. Thionyl chloride (10.70 ml) was added dropwise to the solution while keeping the reaction temperature not higher than 10° C., and thereafter the resulting mixture was stirred at room temperature for 5.5 hours. Water was added to the reaction solution, and sodium hydrogen carbonate was added thereto in small portions to neutralize it. After concentrating the reaction solution to remove methanol, aqueous layer was extracted twice with ethyl acetate. Organic layers were washed 3 times with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was recrystallized from hexane/ethyl acetate mixed solvent to obtain 2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (21.70 g). NMR (H1, CDCl3): δ 2.55-2.61 (1H, m), 2.68-2.75 (1H, m), 3.72 (3H, s), 4.88 (1H, td, J=7.8, 5.4 Hz), 5.06-5.13 (2H, m), 5.64-5.74 (1H, m), 6.33 (1H, brd, J=7.1 Hz), 7.17-7.26 (3H, m)

Reference Example 36
2-(2,6-Difluorobenzamido)pent-4-enoic acid methyl ester




(1) In the same manner as in Reference Example 35-(1), allylglycine (285 mg) was reacted with 2,6-difluorobenzoyl chloride (0.374 ml) to obtain 2-(2,6-difluorobenzamido)pent-4-enoic acid (471 mg).

(2) In the same manner as in Reference Example 35-(2), thionyl chloride (0.242 ml) was reacted with a solution of 2-(2,6-difluorobenzamido)pent-4-enoic acid (471 mg) in methanol (20 ml) to obtain 2-(2,6-difluorobenzamido)pent-4-enoic acid methyl ester (430 mg).

Reference Example 37
2-(2,6-Dichlorobenzamido)pent-4-ynoic acid methyl ester




(1) Propargylglycine (5.00 g) was dissolved in a mixed solvent of 2N aqueous sodium hydroxide solution (100 ml) and dioxane (100 ml), and 2,6-dichlorobenzoyl chloride (9.45 ml) was added dropwise thereto at 0° C., followed by stirring the resulting mixture at room temperature overnight. Water was added to the reaction solution, and the solution was washed with ether. Aqueous layer was acidified by adding 3N hydrochloric acid in small portions thereto and extracted with ethyl acetate, and organic layer was dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain 2-(2,6-dichlorobenzamido)pent-4-ynoic acid.

(2) Under an argon atmosphere, a solution of thionyl chloride (5.25 ml) in absolute methanol (200 ml) was cooled to 0° C. To the solution, a solution of 2-(2,6-dichlorobenzamido)pent-4-ynoic acid obtained in (1) in methanol (50 ml) was added dropwise, and the resulting mixture was stirred at room temperature overnight. Water was added to the reaction solution, and the solution was extracted with ethyl acetate. Organic layer was washed with saturated aqueous sodium hydrogen carbonate solution and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. A mixed solvent of ethyl acetate/ether (1/1) (300 ml) was added to the residue, and insoluble matter was removed by filtration. The filtrate was concentrated and the residue was recrystallized twice from hexane/ethyl acetate mixed solvent to obtain 2-(2,6-dichlorobenzamido)pent-4-ynoic acid methyl ester (9.61 g).

Reference Example 38
(S)-2-(2,6-Dichlorobenzamido)pent-4-enoic acid methyl ester




(1) In a mixed solvent of 2N aqueous sodium hydroxide solution (27.4 ml) and THF (55 ml), L-allylglycine (5.22 g) was dissolved, and 2,6-dichlorobenzoyl chloride (7.79 ml) was added dropwise thereto, followed by stirring the resulting mixture at room temperature for 1 hour. After concentrating the reaction solution to remove methanol, water (100 ml) was added thereto and the resulting mixture was washed with ether. Aqueous layer was acidified by adding 3N hydrochloric acid in small portions thereto, and extracted 3 times with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was recrystallized from hexane/ethyl acetate mixed solvent to obtain (S)-2-(2,6-dichlorobenzamido)pent-4-enoic acid (11.65 g). NMR (H1, CDCl3): δ 2.66-2.73 (1H, m), 2.80-2.86 (1H, m), 4.99 (1H, td, J=7.6, 5.6 Hz), 5.18-5.25 (2H, m), 5.76-5.86 (1H, m), 6.39 (1H, brd, J=7.6 Hz), 7.25-7.34 (3H, m)

(2) Under an argon atmosphere, a solution of (S)-2-(2,6-dichlorobenzamido)pent-4-enoic acid (11.46 g) in methanol (120 ml) was cooled to 0° C. Thionyl chloride (5.22 ml) was added dropwise to the solution while keeping the reaction temperature not higher than 10° C., and thereafter the resulting mixture was stirred at room temperature for 3 hours. Water was added to the reaction solution, and sodium hydrogen carbonate was added thereto in small portions to neutralize it. After concentrating the reaction solution to remove methanol, aqueous layer was extracted twice with ethyl acetate. Organic layers were washed 3 times with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was recrystallized from hexane/ethyl acetate mixed solvent to obtain (S)-2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (11.68 g). NMR (H1, CDCl3): δ 2.62-2.69 (1H, m), 2.76-2.83 (1H, m), 3.79 (3H, s), 4.96 (1H, td, J=7.8, 5.4 Hz), 5.14-5.21 (2H, m), 5.72-5.82 (1H, m), 6.42 (1H, brd, J=6.8 Hz), 7.25-7.34 (3H, m)

Example 1
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-hydroxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, palladium acetate (4.7 mg) and tris(2-methylphenyl)phosphine (6.1 mg) were added to a suspension of 2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (60.4 mg), tetrahydro-4-(4-iodophenyl)-2H-pyran-4-ol (60.8 mg) and potassium carbonate (41.5 mg) in DMF (4 ml), and the resulting mixture was stirred at 80° C. for 6 hours. After cooling the reaction solution to room temperature, ethyl acetate was added thereto and the solution was washed 3 times with water and once with saturated brine, followed by drying the organic layer over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/chloroform=2/1→1/4) and thereafter by thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=1/1) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-hydroxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester (56 mg).
Example 2
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-hydroxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid




To a solution of (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-hydroxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester (56 mg) in THF (1.76 ml), 0.1N aqueous sodium hydroxide solution (1.76 ml) was added, and the resulting mixture was stirred at room temperature for 2 hours. After washing the reaction solution with ether, aqueous layer was acidified by adding 1N hydrochloric acid thereto and extracted twice with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-hydroxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid (48 mg).
Example 3
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (2.11 g) was reacted with tetrahydro-4-(4-iodophenyl)-4-methoxy-2H-pyran (2.22 g) in the presence of potassium carbonate (1.45 g), palladium acetate (81.7 mg) and tris(2-methylphenyl)phosphine (106.2 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester (2.74 g). Column chromatography (silica gel, eluent: cyclohexane/chloroform=2/1→cyclohexane/ethyl acetate=10/1→cyclohexane/ethyl acetate=4/1) was used for purification.
Example 4
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid




In the same manner as in Example 2, 0.1N aqueous sodium hydroxide solution (63.1 ml) was added to a solution of (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester (2.70 g) in THF (63.1 ml) to hydrolyze it to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid (2.50 g).
Example 5
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-ethoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (60.4 mg) was reacted with tetrahydro-4-(4-iodophenyl)-4-ethoxy-2H-pyran (66.4 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-ethoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester (68.9 mg).
Column chromatography (silica gel, eluent:cyclohexane/chloroform=2/1, cyclohexane/ethyl acetate=4/1) was used for purification.
Example 6
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-ethoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-ethoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester (68.9 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-ethoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid (59.8 mg).
Example 7
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(tetrahydro-4-(methoxymethyl)-2H-pyran-4-yl)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (78 mg) was reacted with tetrahydro-4-(4-bromophenyl)-4-(methoxymethyl)-2H-pyran (88 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(tetrahydro-4-(methoxymethyl)-2H-pyran-4-yl)phenyl]pent-4-enoic acid methyl ester (97 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=2/1) was used for purification.
Example 8
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(tetrahydro-4-(methoxymethyl)-2H-pyran-4-yl)phenyl]pent-4-enoic acid sodium salt




To a solution of (E)-2-(2,6-dichlorobenzamido)-5-[4-(tetrahydro-4-(methoxymethyl)-2H-pyran-4-yl)phenyl]pent-4-enoic acid methyl ester (86 mg) in THF (1.7 ml), 0.1N aqueous sodium hydroxide solution (1.7 ml) was added, and the resulting mixture was stirred at room temperature for 2 hours. After washing the reaction solution with ether, aqueous layer was concentrated to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(tetrahydro-4-(methoxymethyl)-2H-pyran-4-yl)phenyl]pent-4-enoic acid sodium salt (66 mg).
Example 9
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxyoxepan-4-yl)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (46 mg) was reacted with 4-(4-iodophenyl)-4-methoxyoxepane (60 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxyoxepan-4-yl)phenyl]pent-4-enoic acid methyl ester (66 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=2/1) was used for purification.
Example 10
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxyoxepan-4-yl)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxyoxepan-4-yl)phenyl]pent-4-enoic acid methyl ester (57 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxyoxepan-4-yl)phenyl]pent-4-enoic acid sodium salt (18 mg).
Example 11
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (54.4 mg) was reacted with 2-(4-iodophenoxy)pyrimidine (59.2 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (53.0 mg). Thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=10/1) was used for purification.
Example 12
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (97.2 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-enoic acid (77.5 mg).
Example 13
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(5-ethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (50.0 mg) was reacted with 2-(4-iodophenoxy)-5-ethylpyrimidine (54.1 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(5-ethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (62.2 mg). Column chromatography (chloroform) and thin layer chromatography (cyclohexane/ethyl acetate=1/2) were used for purification.
Example 14
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(5-ethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-(5-ethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (62.2 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(5-ethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid sodium salt (45.1 mg).
Example 15
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (60 mg) was reacted with 2-(4-iodophenoxy)-4-methoxypyrimidine (78 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (32 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=2/1, cyclohexane/chloroform=1/1→1/10→0/1) was used for purification.
Example 16
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (30 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid (28 mg).
Example 17
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4,6-dimethoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (30 mg) was reacted with 2-(4-iodophenoxy)-4,6-dimethoxypyrimidine (40 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4,6-dimethoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (30 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=2/1) was used for purification.
Example 18
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4,6-dimethoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(4,6-dimethoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (29 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4,6-dimethoxypyrimidin-2-yloxy)phenyl]pent-4-enoic acid (11 mg).
Example 19
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4,6-dimethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (47 mg) was reacted with 2-(4-iodophenoxy)-4,6-dimethylpyrimidine (56 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4,6-dimethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (44 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=2/1) was used for purification.
Example 20
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(4,6-dimethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(4,6-dimethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid methyl ester (44 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(4,6-dimethylpyrimidin-2-yloxy)phenyl]pent-4-enoic acid (36 mg).
Example 21
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, palladium acetate (170.8 mg) and tris(2-methylphenyl)phosphine (222.2 mg) were added to a suspension of 2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (2.20 g), N-(4-iodophenyl)-N-methylpyrimidin-2-amine (2.27 g) and potassium carbonate (1.51 g) in DMF (20 ml), and the resulting mixture was stirred at 80° C. for 3 hours. After cooling the reaction solution to room temperature, ethyl acetate was added to the reaction solution, and the resulting mixture was washed twice with water and once with saturated brine, followed by drying the organic layer over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent: cyclohexane/chloroform=1/1→chloroform). The obtained crudely purified product was purified again by column chromatography (silica gel, eluent: cyclohexane/ethyl acetate=4/1→2/1) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (2.38 g).
Example 22
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




To a solution of (E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (2.38 g) in THF (20 ml), 0.5N aqueous sodium hydroxide solution (14.7 ml) was added, and the resulting mixture was stirred at room temperature for 1 hour. Water (120 ml) was added to the reaction solution and the resulting mixture was washed with ether. Aqueous layer was acidified by adding 1N hydrochloric acid thereto and extracted twice with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (2.06 g).
Example 23
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(ethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (214 mg) was reacted with N-(4-iodophenyl)-N-ethylpyrimidin-2-amine (254 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(ethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (258 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=4/1→hexane/ethyl acetate=2/1→hexane/ethyl acetate=1/2) was used for purification.
Example 24
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(ethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(ethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (258 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(ethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (206 mg).
Example 25
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((2-methoxyethyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (89 mg) was reacted with N-(4-iodophenyl)-N-(2-methoxyethyl)pyrimidin-2-amine (116 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((2-methoxyethyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (120 mg). Column chromatography (silica gel, eluent:cyclohexane/chloroform=2/1→cyclohexane/chloroform=1/1→cyclohexane/chloroform=1/2) was used for purification.
Example 26
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((2-methoxyethyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-((2-methoxyethyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (117 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((2-methoxyethyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt (96 mg).
Example 27
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, palladium acetate (316.7 mg) and tris(2-methylphenyl)phosphine (411.8 mg) were added to a suspension of 2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (4.09 g), N-(4-iodophenyl)-N-isopropylpyrimidin-2-amine (4.59 g) and potassium carbonate (2.80 g) in DMF (50 ml), and the resulting mixture was stirred at 80° C. for 6 hours. After cooling the reaction solution to room temperature, ethyl acetate was added thereto and the resulting mixture was washed twice with water and once with saturated brine, followed by drying the organic layer over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent: cyclohexane/chloroform=2/1→1/2). The obtained crudely purified product was purified again by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=10/1→4/1) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (4.65 g).
Example 28
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




To a solution of (E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (5.63 g) in THF (165 ml), 0.1N aqueous sodium hydroxide solution (165 ml) was added, and the resulting mixture was stirred at room temperature for 1 hour. Water (200 ml) was added to the reaction solution and the resulting mixture was washed with ether. Aqueous layer was acidified by adding 1N hydrochloric acid thereto and extracted twice with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (4.68 g).
Example 29
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((4-hydroxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




(1) In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (45.6 mg) was reacted with (4-iodophenyl)-(4-acetoxybenzyl)pyrimidin-2-ylamine (67.4 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-acetoxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (61.7 mg). Column chromatography (silica gel, eluent:ethyl acetate/hexane=1/3→3/1) and thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=1/5) were used for purification.

(2) To a solution of (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-acetoxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (61.7 mg) in THF (3.0 ml), 0.1N aqueous sodium hydroxide solution (3.0 ml) was added, and the resulting mixture was stirred at room temperature for 2 hours. Water (50 ml) was added to the reaction solution and the resulting mixture was washed with ether. Aqueous layer was acidified by adding 1N hydrochloric acid thereto and extracted twice with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-hydroxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (43 mg).

Example 30
(E)-5-[4-((2-Cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (73 mg) was reacted with 3-(N-(4-iodophenyl)-N-(pyrimidin-2-yl)amino)propanenitrile (94 mg) to obtain (E)-5-[4-((2-cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester (100 mg). Column chromatography (silica gel, eluent:cyclohexane/chloroform=2/1→1/2→1/5) was used for purification.
Example 31
(E)-5-[4-((2-Cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-5-[4-((2-cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester (90 mg) was hydrolyzed to obtain (E)-5-[4-((2-cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid sodium salt (68 mg).
Example 32
(E)-5-[4-(Benzyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (59.3 mg) was reacted with N-benzyl-N-(4-iodophenyl)pyrimidin-2-amine (67.0 mg) to obtain (E)-5-[4-(benzyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester (58.7 mg). Column chromatography (silica gel, eluent:chloroform/cyclohexane=2/1→chloroform) and thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=2/1) were used for purification.
Example 33
(E)-5-[4-(Benzyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-5-[4-(benzyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester (58.7 mg) was hydrolyzed to obtain (E)-5-[4-(benzyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid sodium salt (33.5 mg).
Example 34
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((4-methoxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (83.3 mg) was reacted with N-(4-methoxybenzyl)-N-(4-bromophenyl)pyrimidin-2-amine (102.4 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-methoxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (102.4 mg). Column chromatography (silica gel, eluent: hexane/ethyl acetate=3/1→1/3) and thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=1/5) were used for purification.
Example 35
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((4-methoxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-methoxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (102.4 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-methoxy-benzyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt (76.4 mg).
Example 36
(E)-5-(4-Butyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (90.4 mg) was reacted with N-(4-bromophenyl)-N-butylpyrimidin-2-amine (92.0 mg) to obtain (E)-5-(4-butyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester (78.8 mg). Column chromatography (silica gel, eluent:chloroform/cyclohexane=2/1→chloroform) and thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=2/1) were used for purification.
Example 37
(E)-5-(4-Butyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-5-(4-butyl-pyrimidin-2-yl-amino]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid methyl ester (78.8 mg) was hydrolyzed to obtain (E)-5-(4-butyl-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-dichlorobenzamido)-pent-4-enoic acid sodium salt (42.0 mg).
Example 38
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyridin-3-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (1060.0 mg) was reacted with N-(4-bromophenyl)-N-((pyridin-3-yl)methyl)pyrimidin-2-amine (120.0 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-3-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (147.8 mg). Column chromatography (silica gel, eluent:chloroform→chloroform/ethyl acetate=1/1) and thin layer chromatography (chloroform/ethyl acetate=1/1) were used for purification.
Example 39
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyridin-3-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-3-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (147.8 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-3-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt (114.4 mg).
Example 40
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-yl-thiazol-4-ylmethyl-amino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (78.0 mg) was reacted with N-(4-bromophenyl)-N-((thiazol-4-yl)methyl)pyrimidin-2-amine (90.0 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yl-thiazol-4-ylmethyl-amino)phenyl]pent-4-enoic acid methyl ester (87.7 mg). Column chromatography (silica gel, eluent:chloroform→chloroform/ethyl acetate=3/1) and thin layer chromatography (cyclohexane/ethyl acetate=1/2) were used for purification.
Example 41
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-yl-thiazol-4-ylmethyl-amino)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yl-thiazol-4-ylmethyl-amino)phenyl]pent-4-enoic acid methyl ester (87.7 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yl-thiazol-4-ylmethyl-amino)phenyl]pent-4-enoic acid sodium salt (63.6 mg).
Example 42
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((4-methoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (43 mg) was reacted with N-(4-iodophenyl)-4-methoxy-N-methylpyrimidin-2-amine (51 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-methoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid methyl ester (32 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=2/1) was used for purification.
Example 43
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((4-methoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-methoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid methyl ester (31 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((4-methoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid (29 mg).
Example 44
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((4,6-dimethoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (80 mg) was reacted with N-(4-iodophenyl)-4,6-dimethoxy-N-methylpyrimidin-2-amine (118 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((4,6-dimethoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid methyl ester (92 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=2/1) was used for purification.
Example 45
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((4,6-dimethoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-((4,6-dimethoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid methyl ester (91 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((4,6-dimethoxy-pyrimidin-2-yl)-methyl-amino)phenyl]pent-4-enoic acid (76 mg).
Example 46
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(phenyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (52.4 mg) was reacted with N-(4-bromophenyl)-N-phenylpyrimidin-2-amine (56.6 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(phenyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (40.0 mg). Column chromatography (silica gel, eluent:chloroform/cyclohexane=1/1→chloroform) and thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=1/2) were used for purification.
Example 47
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(phenyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-(phenyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (40.0 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(phenyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt (25.3 mg).
Example 48
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-yl-(tetrahydro-pyran-4-yl)-amino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (164.0 mg) was reacted with trifluoromethanesulfonic acid 4-[pyrimidin-2-yl-(tetrahydropyran-4-yl)amino]phenyl ester (220.0 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yl-(tetrahydro-pyran-4-yl)-amino)phenyl]pent-4-enoic acid methyl ester (178.5 mg). Column chromatography (silica gel, eluent:chloroform/cyclohexane=1/2→chloroform) and thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=1/1) were used for purification.
Example 49
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-yl-(tetrahydro-pyran-4-yl)-amino)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yl-(tetrahydro-pyran-4-yl)-amino)phenyl]pent-4-enoic acid methyl ester (178.5 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yl-(tetrahydro-pyran-4-yl)-amino)phenyl]pent-4-enoic acid sodium salt (103 mg).
Example 50
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((3-methyl-2-butenyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (145 mg) was reacted with N-(4-iodophenyl)-N-(3-methyl-2-butenyl)pyrimidin-2-amine (175 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((3-methyl-2-butenyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (133 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=1/1) was used for purification.
Example 51
(E)-2-(2,6-Dichlorobenzamido)-5-[4-((3-methyl-2-butenyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-((3-methyl-2-butenyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (133 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-((3-methyl-2-butenyl)-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt (95 mg).
Example 52
(E)-5-[4-(Cyclopropylmethyl-pyrimidin-2-ylamino)phenyl]-2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (139 mg) was reacted with N-(cyclopropylmethyl)-N-(4-iodophenyl)pyrimidin-2-amine (162 mg) to obtain (E)-5-[4-(cyclopropylmethyl-pyrimidin-2-ylamino)phenyl]-2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (167 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=1/1) was used for purification.
Example 53
(E)-5-[4-(Cyclopropylmethyl-pyrimidin-2-ylamino)phenyl]-2-(2,6-dichlorobenzamido)pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-5-[4-(cyclopropylmethyl-pyrimidin-2-ylamino)phenyl]-2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (153 mg) was hydrolyzed to obtain (E)-5-[4-(cyclopropylmethyl-pyrimidin-2-ylamino)phenyl]-2-(2,6-dichlorobenzamido)pent-4-enoic acid sodium salt (101 mg).
Example 54
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(isobutyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (143 mg) was reacted with N-(4-iodophenyl)-N-isobutylpyrimidin-2-amine (167 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(isobutyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (159 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=1/1) was used for purification.
Example 55
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(isobutyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-(isobutyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (157 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(isobutyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt (128 mg).
Example 56
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(propyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (171 mg) was reacted with N-(4-iodophenyl)-N-propylpyrimidin-2-amine (192 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(propyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (209 mg). Column chromatography (silica gel, eluent:cyclohexane/chloroform=4/1→3/1) was used for purification.
Example 57
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(propyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(propyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (127 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(propyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (95 mg).
Example 58
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyridin-4-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (72 mg) was reacted with N-(4-iodophenyl)-N-((pyridin-4-yl)methyl)pyrimidin-2-amine (93 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-4-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (99 mg). Column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=1/2→1/3) was used for purification.
Example 59
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyridin-4-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-4-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (99 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-4-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (48 mg).
Example 60
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyridin-2-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (124 mg) was reacted with N-(4-iodophenyl)-N-((pyridin-2-yl)methyl)pyrimidin-2-amine (159 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-2-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (208 mg). Column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=1/1→1/2) was used for purification.
Example 61
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyridin-2-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-2-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (208 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyridin-2-ylmethyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (123 mg).
Example 62
(E)-2-(2,6-Difluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, triethylamine (0.028 ml) and 2,6-difluorobenzoyl chloride (0.015 ml) were added to a solution of 2-amino-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (31.7 mg) in dichloromethane (2 ml), and the resulting mixture was stirred at room temperature for 2 hours. Saturated aqueous sodium hydrogen carbonate solution was added to the reaction solution and the resulting mixture was extracted with ethyl acetate. Organic layer was washed twice with water and once with saturated brine, and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by thin layer chromatography (silica gel, developing solvent: cyclohexane/ethyl acetate=3/2) to obtain (E)-2-(2,6-difluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (42 mg).
Example 63
(E)-2-(2,6-Difluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-difluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (42 mg) was hydrolyzed to obtain (E)-2-(2,6-difluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (29 mg).
Example 64
(E)-2-(2-Chloro-6-fluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, EDC hydrochloride (39 mg) and HOBT (3 mg) were added to a solution of 2-amino-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (51 mg) and 2-chloro-6-fluorobenzoic acid in dichloromethane (1.5 ml), and the resulting mixture was stirred at room temperature for 28 hours. To the reaction solution, 1N hydrochloric acid was added, and the resulting mixture was extracted with ethyl acetate. Organic layer was washed with saturated aqueous sodium hydrogen carbonate solution and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by thin layer chromatography (silica gel, developing solvent:hexane/ethyl acetate=1/2) to obtain (E)-2-(2-chloro-6-fluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (39 mg).
Example 65
(E)-2-(2-Chloro-6-fluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2-chloro-6-fluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (39 mg) was hydrolyzed to obtain (E)-2-(2-chloro-6-fluorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (34 mg).
Example 66
(E)-2-(2-Chloro-6-methylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, oxalyl dichloride (0.022 ml) and DMF (0.002 ml) were added to a solution of 2-chloro-6-methylbenzoic acid (29 mg) in dichloromethane (1.0 ml), and the resulting mixture was stirred at room temperature for 1 hour. The reaction solution was concentrated and the residue was dissolved in dichloromethane (1.0 ml). To the solution, 2-amino-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (50 mg) and triethylamine (0.05 ml) were added, and the resulting mixture was stirred at room temperature for 2.5 hours. To the reaction solution, 1N hydrochloric acid was added, and the resulting solution was extracted with dichloromethane. Organic layer was washed with saturated aqueous sodium hydrogen carbonate solution and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by thin layer chromatography (silica gel, developing solvent:hexane/ethyl acetate=1/1) to obtain (E)-2-(2-chloro-6-methylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (63 mg).
Example 67
(E)-2-(2-Chloro-6-methylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2-chloro-6-methylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (63 mg) was hydrolyzed to obtain (E)-2-(2-chloro-6-methylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (57 mg).
Example 68
(E)-2-(2,6-Dimethylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, oxalyl dichloride (0.025 ml) and DMF (0.002 ml) were added to a solution of 2,6-dimethylbenzoic acid (24 mg) in dichloromethane (1.0 ml), and the resulting mixture was stirred at room temperature for 2 hours. The reaction solution was concentrated and the residue was dissolved in dichloromethane (1.0 ml). To the solution, 2-amino-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (50 mg) and triethylamine (0.05 ml) were added, and the resulting mixture was stirred at room temperature for 3 hours. To the reaction solution, 1N hydrochloric acid was added, and the resulting solution was extracted with dichloromethane, followed by drying the organic layer over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by thin layer chromatography (silica gel, developing solvent:hexane/ethyl acetate=3/2) to obtain (E)-2-(2,6-dimethylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (62 mg).
Example 69
(E)-2-(2,6-Dimethylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




In the same manner as in Example 2, (E)-2-(2,6-dimethylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (62 mg) was hydrolyzed to obtain (E)-2-(2,6-dimethylbenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (47 mg).
Example 70
(E)-5-[4-((2-Cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-difluorobenzamido)-pent-4-enoic acid methyl ester




In the same manner as in Example 1,2-(2,6-difluorobenzamido)pent-4-enoic acid methyl ester (17 mg) was reacted with 3-(N-(4-iodophenyl)-N-(pyrimidin-2-yl)amino)propanenitrile (24 mg) to obtain ((E)-5-[4-((2-cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-difluorobenzamido)-pent-4-enoic acid methyl ester (18 mg). Column chromatography (silica gel, eluent:hexane/ethyl acetate=2/1) was used for purification.
Example 71
(E)-5-[4-((2-Cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-difluorobenzamido)-pent-4-enoic acid




In the same manner as in Example 2, (E)-5-[4-((2-cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-difluorobenzamido)-pent-4-enoic acid methyl ester (18 mg) was hydrolyzed to obtain (E)-5-[4-((2-cyano-ethyl)-pyrimidin-2-yl-amino)-phenyl]-2-(2,6-difluorobenzamido)-pent-4-enoic acid (10 mg).
Example 72
2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-ynoic acid methyl ester




Under an argon atmosphere, copper iodide (2.8 mg) and dichlorobis(triphenylphosphine)palladium (5.2 mg) were added to a solution of 2-(2,6-dichlorobenzamido)pent-4-ynoic acid methyl ester (74 mg) and 2-(4-iodophenoxy)pyrimidine (81 mg) in THF/diisopropylamine (3/1) mixture (5 ml), and the resulting mixture was stirred at room temperature for 2 hours. The reaction solution was concentrated and ethyl acetate was added to the residue. The insoluble matter was removed by filtration, and the filtrate was washed once with water and once with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/chloroform=2/1→cyclohexane/chloroform=1/3) to obtain 2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-ynoic acid methyl ester (100 mg).
Example 73
2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-ynoic acid sodium salt




In the same manner as in Example 8,2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-ynoic acid methyl ester (100 mg) was hydrolyzed to obtain 2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-yloxy)phenyl]pent-4-ynoic acid sodium salt (85 mg).
Example 74
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-ylamino)phenyl]pent-4-ynoic acid methyl ester




In the same manner as in Example 72, 2-(2,6-dichlorobenzamido)pent-4-ynoic acid methyl ester (50.0 mg) was reacted with N-(4-iodophenyl)pyrimidin-2-amine (49.5 mg) to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-ylamino)phenyl]pent-4-ynoic acid methyl ester (80.0 mg). Column chromatography (silica gel, eluent:chloroform/cyclohexane=3/11 chloroform/ethyl acetate=5/1) and thin layer chromatography (silica gel, developing solvent: chloroform/ethyl acetate=3/1) were used for purification.
Example 75
(E)-2-(2,6-Dichlorobenzamido)-5-[4-(pyrimidin-2-ylamino)phenyl]pent-4-ynoic acid sodium salt




In the same manner as in Example 8, (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-ylamino)phenyl]pent-4-ynoic acid methyl ester (80.0 mg) was hydrolyzed to obtain (E)-2-(2,6-dichlorobenzamido)-5-[4-(pyrimidin-2-ylamino)phenyl]pent-4-ynoic acid sodium salt (62.3 mg).
Example 76
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, palladium acetate (295 mg) and tris(2-methylphenyl)phosphine (384 mg) were added to a suspension of (S)-2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (7.60 g), tetrahydro-4-(4-iodophenyl)-4-methoxy-2H-pyran (8.00 g) and potassium carbonate (5.21 g) in DMF (90 ml), and the resulting mixture was stirred at 80° C. for 2 hours. After cooling the reaction solution to room temperature, ethyl acetate was added thereto, and the resulting mixture was washed 3 times with water and once with saturated brine, followed by drying the organic layer over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/chloroform=2/1→1/4). The obtained crudely purified product was further purified by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=4/1) to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester (9.80 g).
Example 77
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid




In a mixed solvent of THF (250 ml) and water (125 ml), (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid methyl ester (9.80 g) was dissolved, and the resulting mixture was cooled to 0° C. Barium hydroxide octahydrate (3.14 g) was added thereto and the resulting mixture was stirred at 0° C. for 8 hours. The reaction solution was concentrated to remove THF, and water (150 ml) was added thereto, followed by washing the resulting mixture with ether. Aqueous layer was acidified by adding 1N hydrochloric acid in small portions thereto and extracted 3 times with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:chloroform/methanol=10/1). The obtained crudely purified product was further purified by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=ethyl acetate) to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid (6.15 g).
Example 78
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid sodium salt




To (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid (4.24 g), THF (8.86 ml) and 1N aqueous sodium hydroxide solution (8.86 ml) were added, and the resulting mixture was stirred at room temperature for 5 minutes. The reaction solution was concentrated to dryness to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(4-methoxytetrahydropyran-4-yl)-phenyl]pent-4-enoic acid sodium salt (4.30 g).
Example 79
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, palladium acetate (93.2 mg) and tris(2-methylphenyl)phosphine (121.2 mg) were added to a suspension of (S)-2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (1.20 g), N-(4-iodophenyl)-N-methylpyrimidin-2-amine (1.24 g) and potassium carbonate (824 mg) in DMF (20 ml), and the resulting mixture was stirred at 80° C. for 3 hours. After cooling the reaction solution to room temperature, ethyl acetate was added thereto, and the resulting mixture was washed twice with water and once with saturated brine, followed by drying the organic layer over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/chloroform=1/1 chloroform). The obtained crudely purified product was purified again by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=4/1→2/1) to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (1.28 g).
Example 80
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




A solution of (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (1.28 g) in THF (45 ml) was cooled to 0° C. To the solution, 0.1N aqueous lithium hydroxide solution (40 ml) was added, and the resulting mixture was stirred at 0° C. for 40 minutes. Water (50 ml) was added to the reaction solution, and the resulting mixture was washed with ether. Aqueous layer was acidified by adding 1N hydrochloric acid in small portions thereto, and extracted twice with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (1.01 g).
Example 81
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt




To a solution of (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (10.60 g) in methanol (200 ml), 1N aqueous sodium hydroxide solution (22.5 ml) was added, and the resulting mixture was stirred at room temperature for 5 minutes. The reaction solution was concentrated to dryness to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(methyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt (11.08 g). IR(KBr)cm−1: 3385, 1584, 1552, 1486, 1431, 1397, 1315, 1195, 1112, 968, 799.
Example 82
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester




Under an argon atmosphere, palladium acetate (19.9 mg) and tris(2-methylphenyl)phosphine (25.9 mg) were added to a suspension of (S)-2-(2,6-dichlorobenzamido)pent-4-enoic acid methyl ester (514.4 mg), N-(4-iodophenyl)-N-isopropylpyrimidin-2-amine (577.4 mg) and potassium carbonate (352.9 mg) in DMF (6 ml), and the resulting mixture was stirred at 80° C. for 7 hours. After cooling the reaction solution to room temperature, ethyl acetate was added thereto, and the resulting mixture was washed twice with water and once with saturated brine, followed by drying the organic layer over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated. The residue was purified by column chromatography (silica gel, eluent:cyclohexane/chloroform=2/1→1/1→1/3). The obtained crudely purified product was purified again by column chromatography (silica gel, eluent:cyclohexane/ethyl acetate=6/1→4/1→2/1) to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (553.6 mg).
Example 83
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid




A solution of (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid methyl ester (526.2 g) in THF (15 ml) was cooled to 0° C. To the solution, 0.1N aqueous lithium hydroxide solution (15.4 ml) was added, and the resulting mixture was stirred at 0° C. for 40 minutes. Water (20 ml) was added to the reaction solution and the resulting mixture was washed with ether. Aqueous layer was acidified by adding 1N hydrochloric acid in small portions thereto, and extracted twice with ethyl acetate. Organic layers were washed with saturated brine and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the filtrate was concentrated to dryness to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (420.7 mg).
Example 84
(S,E)-2-(2,6-Dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt




To a suspension of (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid (390.4 mg) in methanol (15 ml), 1N aqueous sodium hydroxide solution (0.782 ml) was added, and the resulting mixture was stirred at room temperature for 5 minutes. The reaction solution was concentrated to dryness to obtain (S,E)-2-(2,6-dichlorobenzamido)-5-[4-(isopropyl-pyrimidin-2-ylamino)phenyl]pent-4-enoic acid sodium salt (388.8 mg). IR(KBr)cm−1: 3386, 2974, 1585, 1549, 1509, 1455, 1292, 1122, 968, 798, 780.
The spectral data of the compounds of Examples 1 to 84 are shown in Tables 8-16.







TABLE 8













 











Ex No.
Y
M
ESI-MS
NMR (H1) chemical shift














1




Me
478 (M + H)+
CDCl3, δ 1.62-1.67 (2 H, m), 2.11-2.19 (2 H, m), 2.79-2.97 (2 H, m), 3.81 (3 H, s), 3.84-3.95 (4 H, m), 5.01-5.05 (1 H, m), 6.13-6.17 (1 H, m), 6.50-6.54 (2 H, m), 7.24-7.34 (5 H, m), 7.42 (2 H, d, J = 8.1 Hz)


 


2




H
462 (M − H)−
CDCl3, δ 1.66 (4 H, m), 2.82 (1 H, m), 2.98 (1 H, m), 3.86 (4 H, m), 4.95 (1 H, m), 6.22 (1 H, m), 6.56 (1 H, m), 7.24-7.40 (7 H, m)


 


3




Me
492 (M + H)+
CDCl3, δ 1.92 (4 H, br), 2.77-2.84 (1 H, m), 2.94-2.96 (4 H, brm), 3.73-3.80 (7 H, brm), 5.03 (1 H, dd, J = 12.9, 5.6 Hz), 6.12-6.20 (1 H, m), 6.52 (1 H, d, J = 15.6 Hz), 6.73-6.75 (1 H, br), 7.22-7.45 (7 H, m)


 


4




H
476 (M − H)−
dmso-d6, δ 1.87-1.90 (4 H, m), 2.56-2.63 (1 H, m), 2.68-2.74 (1 H, m), 2.84 (3 H, s), 3.66-3.68 (4 H, m), 4.55-4.58 (1 H, brm), 6.30 (1 H, td, J = 15.9, 7.1 Hz), 6.50 (1 H, d, J = 15.9 Hz), 7.31-7.50 (7 H, m), 9.10 (1 H, brs), 12.77 (1 H, brs)


 


5




Me
506 (M + H)+
CDCl3, δ 1.14 (3 H, t, J = 7.1 Hz), 1.92-2.04 (4 H, m), 2.80-2.98 (2 H, m), 3.05-3.11 (2 H, dd, J = 14.2, 7.1 Hz), 3.81 (3 H, s), 3.74-3.92 (4 H, m), 5.02-5.06 (1 H, m), 6.13-6.17 (1 H, m), 6.48 (1 H, d, J = 7.6 Hz), 6.52 (1 H, d, J = 15.9 Hz), 7.25-7.34 (7 H, m)


 


6




H
490 (M − H)−
CDCl3, δ 1.13 (3 H, t, J = 6.8 Hz), 1.95 (4 H, m), 2.87 (1 H, m), 3.04 (1 H, m), 3.07 (2 H, q, J = 7.1 Hz), 3.89 (4 H, m), 5.03 (1 H, m), 6.22 (1 H, m), 6.57 (2 H, m), 7.23-7.32 (7 H, m)


 


7




Me
506 (M + H)+


 


8




Na
490 (M − Na)−
dmso-d6, δ 1.80-1.86 (2 H, m), 1.97-2.01 (2 H, m), 2.59-2.66 (1 H, m), 2.75-2.79 (1 H, m), 3.11 (3 H, s), 3.29-3.34 (4 H, m), 3.64-3.67 (2 H, m), 4.01 (1 H, brd, J = 5.9 Hz), 6.19-6.27 (1 H, m), 6.36 (1 H, d, J = 16.1 Hz), 7.24-7.47 (7 H, m), 7.69 (1 H, d, J = 6.1 Hz)


 


9




Me
506 (M + H)+


 


10




Na
490 (M − Na)−
dmso-d6, δ 1.85-1.94 (2 H, m), 2.03-2.51 (4 H, m), 2.59-2.66 (1 H, m), 2.75-2.82 (1 H, m), 2.88 (3 H, s), 3.52-3.72 (4 H, m), 3.99 (1 H, dd, J = 11.0, 5.4 Hz), 6.21-6.28 (1 H, m), 6.37 (1 H, d, J = 15.9 Hz), 7.28 (4 H, s), 7.34-7.43 (1 H, m), 7.46 (2 H, d, J = 7.1 Hz), 7.67 (1 H, d, J = 5.6 Hz)
















TABLE 9













 











Ex No.
Y
M
ESI-MS
NMR (H1) chemical shift





11




Me
472 (M + H)+
CDCl3, δ 2.71-2.78 (1 H, m), 2.86-2.92 (1 H, m), 3.73 (3 H, s), 4.93-4.98 (1 H, m), 5.99-6.07 (1 H, m), 6.45 (1 H, d, J = 15.9 Hz), 6.52 (1 H, br), 6.95 (1 H, t, J = 4.9 Hz), 7.05 (2 H, d, J = 8.5 Hz), 7.08-7.25 (3 H, m), 7.30 (2 H, d, J = 8.5 Hz), 8.47 (2 H, d, J = 4.9 Hz)


 


12




H
456 (M − H)−
dmso-d6, δ 2.57-2.64 (1 H, m), 2.71-2.76 (1 H, m), 4.57-4.62 (1 H, m), 6.24-6.31 (1 H, m), 6.53 (1 H, d, J = 15.9 Hz), 7.14 (2 H, d, J = 8.5 Hz), 7.25 (1 H, t, J = 4.9 Hz), 7.35-7.49 (5 H, m), 8.63 (2 H, d, J = 4.9 Hz), 9.14 (1 H, d, J = 8.1 Hz), 12.78 (1 H, brs)


 


13




Me
500 (M + H)+


 


14




Na
484 (M − Na)−
CDCl3, δ 1.25 (3 H, t, J = 7.6 Hz), 2.62 (2 H, dd, J = 7.6, 4.2 Hz), 2.86 (1 H, m), 2.92 (1 H, m), 4.96 (1 H, m), 6.10 (1 H, dt, J = 15.9, 7.6 Hz), 6.47 (1 H, d, J = 15.9 Hz), 6.62 (1 H, d, J = 7.3 Hz), 7.02 (2 H, d, J = 8.6 Hz), 7.30 (5 H, m), 8.42 (2 H, s)


 


15




Me
502 (M + H)+


 


16




H
486 (M − H)−
CDCl3, δ 2.83 (1 H, m), 2.98 (1 H, m), 3.82 (3 H, s), 5.04 (1 H, dd, J = 5.4 and 13.0 Hz), 6.10 (1 H, m), 6.45-6.55 (2 H, m), 7.07-7.48 (7 H, m), 8.17 (1 H, d, J = 5.6 Hz)


 


17




Me
532 (M + H)+


 


18




H
516 (M − H)−
CDCl3, δ 2.80 (1 H, m), 2.93 (1 H, m), 3.81 (6 H, s), 5.03 (1 H, m), 5.97 (1 H, m), 6.42-6.46 (2 H, m), 6.84 (2 H, d, J = 12.0 Hz), 7.24-7.38 (5 H, m)


 


19




Me
502 (M + H)+


 


20




H
484 (M − H)−
CDCl3, δ 2.40 (6 H, s), 2.84 (1 H, m), 2.97 (1 H, m), 5.05 (1 H, m), 6.09 (1 H, m), 6.46-6.55 (2 H, m), 6.76 (2 H, s), 7.07-7.35 (5 H, m)
















TABLE 10













 











Ex No.
Y
M
ESI-MS
NMR (H1) chemical shift





21




Me
485 (M + H)+
CDCl3, δ 2.78-2.85 (1 H, m), 2.91-2.98 (1 H, m), 3.49 (3 H, s), 3.79 (3 H, s), 4.99-5.04 (1 H, m), 6.04-6.12 (1 H, m), 6.43 (1 H, d, J = 7.8 Hz), 6.50 (1 H, d, J = 15.9 Hz), 6.55 (1 H, t, J = 4.6 Hz), 7.22-7.35 (7 H, m), 8.31 (2 H, d, J = 4.6 Hz)


 


22




H
469 (M − H)−
dmso-d6, δ 2.57-2.64 (1 H, m), 2.69-2.73 (1 H, m), 3.43 (3 H, s), 4.58 (1 H, dd, J = 13.4, 8.3 Hz), 6.27 (1 H, td, J = 16.1, 7.3 Hz), 6.51 (1 H, d, J = 16.1 Hz), 6.72 (1 H, t, J = 4.9 Hz), 7.27 (2 H, d, J = 8.3 Hz), 7.35 (2 H, d, J = 8.5 Hz), 7.39-7.49 (3 H, m), 8.34-8.36 (2 H, m), 9.14 (1 H, d, J = 8.3 Hz), 12.76 (1 H, s)


 


23




Me
499 (M + H)+
CDCl3, δ 1.23 (3 H, t, J = 6.8 Hz), 2.81-3.00(2 H, m), 3.82 (3 H, s), 4.01(2 H, q, J = 6.8 Hz), 5.04(1 H, dt, J = 5.1, 7.8 Hz), 6.11(1 H, dt, J = 7.8, 15.4 Hz), 6.45(1 H, d, J = 7.8 Hz), 6.53(1 H, t, J = 4.9 Hz), 6.45(1 H, d, J = 15.4 Hz), 7.19-7.38 (7 H, m), 8.31(2 H, d, J = 4.9 Hz).


 


24




H
483 (M − H)−
dmso-d6, δ 1.12(3 H, t, J = 6.8 Hz), 2.57-2.75(2 H, m), 3.95(2 H, q, J = 6.8 Hz), 4.58(1 H, dt, J = 5.1, 8.3 Hz), 6.28(1 H, dt, J = 7.1, 15.6 Hz), 6.52(1 H, d, J = 15.6 Hz), 6.68(1 H, t, J = 4.9 Hz), 7.19-7.49(7 H, m), 8.32(2 H, d, J = 4.9 Hz), 9.13(1 H, d, J = 8.3 Hz).


 


25




Me
529 (M + H)+
CDCl3, δ 2.81-3.00(2 H, m), 3.32 (3 H, s), 3. 63 (2 H, t, J = 5.9 Hz) , 3.82 (3 H, s), 4.15(2 H, t, J = 5.9 Hz), 5.04(1 H, dt, J = 5.1, 7.8 Hz), 6.1 1(1 H, dt, J = 7.3, 15.4 Hz), 6.45(1 H, d, J = 7.8 Hz), 6.53(1 H, d, J = 15.4 Hz), 6.55(1 H, t, J = 4.9 Hz), 7.24-7.37(7 H, m), 8.31(2 H, d, J = 4.9 Hz).


 


26




Na
513 (M − Na)−
dmso-d6, δ 2.60-2.82(2 H, m),3.19(3 H, s), 3.51(2 H, t, J = 6.1 Hz), 4.01-4.06(3 H, m), 6.23(1 H, dt, J = 7.1, 15.6 Hz), 6.38(1 H, d, J = 15.6 Hz), 6.69(1 H, t, J = 4.9 Hz), 7.18-7.46(7 H, m), 7.70-7.72(1 H, m), 8.32(2 H, d, J = 4.9 Hz)


 


27




Me
513 (M + H)+
CDCl3, δ 1.15 (6 H, d, J = 6.8 Hz) , 2.82-3.01(2 H, m), 3.83 (3 H, s), 5.05(1 H, dt, J = 5.1, 7.6 Hz), 5.15(1 H, dq, J = 6.6, 6.8 Hz), 6.14(1 H, dt, J = 7.6, 15.9 Hz), 6.47(1 H, d, J = 7.6 Hz), 6.48(1 H, t, J = 4.9 Hz), 6.55(1 H, d, J = 15.9 Hz), 7.06-7.40(7 H, m), 8.28(2 H, d, J = 4.9 Hz).


 


28




H
497 (M − H)−
dmso-d6, δ 1.06 (3 H, s), 1.08 (3 H, s), 2.59-2.66 (1 H, m), 2.70-2.76 (1 H, m), 4.60 (1 H, ml, J = 8.3, 5.1 Hz), 5.06 (1 H, td, J = 13.4, 6.6 Hz), 6.31 (1 H, td, J = 14.9, 7.1 Hz), 6.54 (1 H, d, J = 15.9 Hz), 6.62 (1 H, t, J = 4.9 Hz), 7.05 (2 H, d, J = 8.3 Hz), 7.38-7.43 (3 H, m), 7.48 (2 H, d, J = 8.5 Hz), 8.34-8.36 (2 H, m), 9.15 (1 H, d, J = 8.3 Hz), 12.77 (1 H, s)


 


29




H
561 (M − H)−
CDCl3, δ 2.62 (2 H, m), 4.74 (1 H, dd, J = 7.6, 4.6 Hz), 5.01 (1 H, brs), 5.08 (1 H, dd, J = 25.9, 15.4 Hz), 5.84 (1 H, dt, J = 15.9, 8.1 Hz), 6.16 (1 H, d, J = 15.9 Hz), 6.35 (1 H, d, J = 7.3 Hz), 6.66 (3 H, m), 6.98 (1 H, brs), 7.05 (4 H, m), 7.25 (5 H, m), 8.41 (2 H, d, J = 4.9 Hz)


 


30




Me
524 (M + H)+
CDCl3, δ 2.8 1(2 H, t, J = 6.8 Hz), 2.81-3.02 (2 H, m), 3.82 (3 H, s), 4 .25 (2 H, t, J = 6.8 Hz), 5.04(1 H, dt, J = 5.4, 7.8 Hz), 6.14(1 H, dt, J = 7.6, 15.6 Hz), 6.48(1 H, d, J = 7.8 Hz), 6.53(1 H, d, J = 15.6 Hz), 6.65(1 H, t, J = 4.9 Hz), 7.22-7.41(7 H, m), 8.34(2 H, d, J = 4.9 Hz).
















TABLE 11













 











Ex No.
Y
M
ESI-MS
NMR (H1) chemical shift





31




Na
508 (M − Na)−
dmso-d6, δ 2.60-2.82(2 H, m), 2.83(2 H, t, J = 6.8 Hz), 4.00-4.06(1 H, m), 4.17(2 H, t, J = 6.8 Hz), 6.25(1 H, dt, J = 7.1, 15.6 Hz), 6.40(1 H, d, J = 15.6 Hz), 6.76(1 H, t, J = 4.9 Hz), 7.21-7.46(7 H, m), 7.66-7.73(1 H, m), 8.37(2 H, d, J = 4.9 Hz)


 


32




Me
561 (M + H)+


 


33




Na
545 (M − Na)−
CD3OD, δ 2.73 (1 H, m), 2.91 (1 H, m), 4.58 (1 H, dd, J = 6.6, 4.9 Hz), 5.22 (2 H, brs), 6.31 (1 H, dt, J = 15.6, 7.1 Hz), 6.49 (1 H, d, J = 15.6 Hz), 6.69 (1 H, t, J = 4.9 Hz), 7.09 (2 H, d, J = 8.5 Hz), 7.19 (6 H, m), 7.34 (5 H, m), 8.30 (2 H, d, J = 4.9 Hz)


 


34




Me
591 (M + H)+


 


35




Na
575 (M − Na)−
CD3OD, δ 2.73 (1 H, m), 2.90 (1 H, m), 3.72 (3 H, s), 4.60 (1 H, m), 5.14 (2 H, brs), 6.32 (1 H, dt, J = 15.9, 7.3 Hz), 6.49 (1 H, d, J = 15.9 Hz), 6.67 (1 H, t, J = 4.9 Hz), 6.77 (2 H, d, J = 8.8 Hz), 7.04 (2 H, d, J = 8.3 Hz), 7.12 (2 H, d, J = 8.8 Hz), 7.35 (5 H, m), 8.29 (2 H, d, J = 4.9 Hz)


 


36




Me
527 (M + H)+


 


37




Na
511 (M − Na)−
CD3OD, δ 0.91 (3 H, t, J = 7.3 Hz), 1.31 (2 H, m), 1.58 (2 H, td, J = 7.3, 4.9 Hz), 2.75 (1 H, m), 2.92 (1 H, m), 3.94 (2 H, t, J = 7.3 Hz), 4.60 (1 H, dd, J = 7.6, 4.9 Hz), 6.35 (1 H, dt, J = 15.6, 7.3 Hz), 6.54 (1 H, d, J = 15.6 Hz), 6.62 (1 H, t, J = 4.9 Hz), 7.14 (2 H, d, J = 8.6 Hz), 7.37 (5 H, m), 8.25 (1 H, d, J = 4.9 Hz)


 


38




Me
562 (M + H)+


 


39




Na
546 (M − Na)−
CD3OD, δ 2.73 (1 H, m), 2.91 (1 H, m), 4.58 (1 H, dd, J = 6.6, 4.9 Hz), 5.27 (2 H, s), 6.31 (1 H, dt, J = 15.6, 7.3 Hz), 6.50 (1 H, d, J = 15.6 Hz), 6.73 (1 H, t, J = 4.9 Hz), 7.12 (2 H, d, J = 8.3 Hz), 7.35 (6 H, m), 7.73 (1 H, d,J = 7.8 Hz), 8.31 (2 H, d, J = 4.9 Hz), 8.36 (1 H, d, J = 4.4 Hz), 8.50 (1 H, brs)


 


40




Me
568 (M + H)+
















TABLE 12













 











Ex No.
Y
M
ESI-MS
NMR (H1) chemical shift





41




Na
552 (M − Na)−
CD3OD, δ 2.64 (1 H, m), 2.82 (1 H, m), 4.48 (1 H, dd, J = 6.6, 4.6 Hz), 5.28 (2 H, brs), 6.23 (1 H, dt, J = 15.9, 6.9 Hz), 6.40 (1 H, d, J = 15.9 Hz), 6.62 (1 H, t, J = 4.9 Hz), 7.10 (2 H, d, J = 8.6 Hz), 7.29 (7 H, m), 8.21 (2 H, d, J = 4.9 Hz), 8.81 (1 H, d, J = 2.0 Hz)


 


42




Me
515 (M + H)+


 


43




H
499 (M − H)−
CDCl3, δ 2.83 (1 H, m), 2.97 (1 H, m), 3.52 (3 H, s), 3.82 (3 H, s), 5.04 (1 H, m), 6.10 (1 H, m), 6.44-6.54 (2 H, m), 7.07-7.35 (7 H, m), 8.07 (1 H, d, J = 5.6 Hz).


 


44




Me
545 (M + H)+


 


45




H
529 (M − H)−
CDCl3, δ 2.82 (1 H, m), 2.97 (1 H, m), 3.52 (3 H, s), 3.79 (6 H, s), 5.05(1 H, dd, J = 5.6 and 13.4 Hz), 6.11 (1 H, m), 6.49 (2 H, m), 7.24-7.34 (7 H, m).


 


46




Me
547 (M + H)+


 


47




Na
531 (M − Na)−
CD3OD, δ 2.73 (1 H, m), 2.92 (1 H, m), 4.60 (1 H, dd, J = 6.4, 4.6 Hz), 6.32 (1 H, dt, J = 15.9, 7.3 Hz), 6.50 (1 H, d, J = 15.9 Hz), 6.81 (1 H, t, J = 4.9 Hz), 7.12 (2 H, d, J = 8.6 Hz), 7.20 (3 H, m), 7.36 (8 H, m), 8.30 (2 H, d, J = 4.9 Hz)


 


48




Me
555 (M + H)+


 


49




Na
539 (M − Na)−
CD3OD, δ 1.48 (1 H, dd, J = 12.5, 4.6 Hz), 1.54 (1 H, dd, J = 12.5, 4.6 Hz), 1.83 (2 H, m), 2.75 (1 H, m), 2.93 (1 H, m), 3.52 (2 H, m), 4.00 (2 H, m), 4.61 (1 H, dd, J = 6.6, 4.9 Hz), 4.53-4.97 (1 H, m), 6.38 (1 H, dt, J = 15.6, 7.1 Hz), 6.57 (1 H, d, J = 15.6 Hz), 6.61 (1 H, t, J = 4.9 Hz), 7.02 (2 H, d, J = 8.3 Hz), 7.38 (3 H, m), 7.45 (2 H, d, J = 15.6 Hz), 8.23 (2 H, d, J = 4.9 Hz)


 


50




Me
539 (M + H)+


 


51




Na
523 (M − Na)−
dmso-d6, δ 1.52 (3 H, s), 1.63 (3 H, s), 2.60-2.68 (1 H, m), 2.76-2.83 (1 H, m), 4.04-4.10 (1 H, m), 4.51-4.53 (2 H, m), 5.26-5.34 (1 H, m), 6.20-6.27 (1 H, m), 6.39 (1 H, d, J = 15.9 Hz), 6.68 (1 H, t, J = 4.6 Hz), 7.15-7.75 (7 H, m), 8.32-8.45 (3 H, m)
















TABLE 13













 











Ex No.
Y
M
ESI-MS
NMR (H1) chemical shift





52




Me
525 (M + H)+


 


53




Na
509 (M − Na)−
dmso-d6, δ 0.08-0.16 (2 H, m), 0.35-0.41 (2 H, m), 1.04-1.12 (1 H, m), 2.62-2.68 (1 H, m), 2.77-2.84 (1 H, m), 3.80 (2 H, d, J = 6.8 Hz), 4.11 (1 H, dd, J = 11.2, 5.4 Hz), 6.22-6.29 (1 H, m), 6.41 (1 H, d, J = 15.9 Hz), 6.67 (1 H, t, J = 4.6 Hz), 7.18-7.46 (7 H, m), 7.78 (1 H, d, J = 6.4 Hz), 8.30 (2 H, d, J = 4.6 Hz)


 


54




Me
527 (M + H)+


 


55




Na
511 (M − Na)−
dmso-d6, δ 0.85 (6 H, d, J = 6.8 Hz), 1.83-1.92 (1 H, m), 2.60-2.67 (1 H, m), 2.76-2.83 (1 H, m), 3.83 (2 H, d, J = 7.3 Hz), 4.02 (1 H, dd, J = 11.2, 5.1 Hz), 6.20-6.27 (1 H, m), 6.39 (1 H, d, J = 15.6 Hz), 6.66 (1 H, t, J = 4.6 Hz), 7.19-7.47 (7 H, m), 7.70 (1 H, d, J = 6.1 Hz), 8.30 (2 H, d, J = 4.6 Hz)


 


56




Me
525 (M + H)+
CDCl3, δ 0.91 (3 H, t, J = 7.6 Hz), 1.66 (2 H, dd, J = 15.4, 7.6 Hz), 2.49-2.87 (1 H, m), 2.93-2.98 (1 H, m), 3.82 (3 H, s), 3.91 (2 H, t, J = 7.6 Hz), 5.04 (1 H, td, J = 7.8, 5.1 Hz), 6.07-6.14 (1 H, m), 6.46 (1 H, d, J = 7.6 Hz), 6.52 (1 H, t, J = 4.6 Hz), 6.53 (1 H, d, J = 15.9 Hz), 7.16-7.37 (7 H, m), 8.29 (2 H, d, J = 4.6 Hz)


 


57




H
509 (M − H)−
CDCl3, δ 0.91(3 H, t, J = 7.3 Hz), 1.66(2 H, s, J = 7.6 Hz), 2.66(2 H, brm), 3.81~3.97(2 H, m), 4.75(1 H, dt, J = 7.3, 5.1 Hz), 5.92(1 H, ddd, J = 15.1, 7.6, 7.6 Hz), 6.21(1 H, d, J = 15.9 Hz), 6.29(1 H, d, J = 7.3 Hz), 6.62(1 H, t, J = 4.9 Hz), 7.20(2 H, d, J = 8.3 Hz), 7.28-7.37(5 H, m), 8.41(2 H, d, J = 4.9 Hz)


 


58




Me
562 (M + H)+
CDCl3, δ 2.80-2.98 (2 H, m), 3.81 (3 H, s), 5.00-5.04 (1 H, m), 5.23 (2 H, s), 6.08-6.12 (1 H, m), 6.45 (1 H, d, J = 7.6 Hz), 6.49 (1 H, d, J = 15.4 Hz), 6.64 (1 H, t, J = 4.6 Hz), 7.20 (2 H, d, J = 7.1 Hz), 7.25-7.38 (7 H, m), 8.34 (2 H, d, J = 4.9 Hz), 8.50 (2 H, d, J = 4.6 Hz)


 


59




H
546 (M − H)−
CDCl3, δ 2.90~3.07(2 H, m), 4.92 (1 H, brdd), 5.26(2 H, dd, J = 18.8, 16.8 Hz), 6.12(1 H, ddd, J = 15.3, 7.6, 7.6 Hz), 6.49(1 H, d, J = 15.6 Hz), 6.66~6.70(2 H, m), 7.12(2 H, d, J = 8.3 Hz), 7.22~7.34(7 H, m), 8.35(2 H, d, J = 4.9 Hz), 8.51(2 H, d, J = 5.6 Hz)


 


60




Me
561 (M + H)+
CDCl3, δ 2.80-2.96 (2 H, m), 3.80 (3 H, s), 5.00-5.04 (1 H, s), 5.37 (2 H, s), 6.03-6.10 (1 H, m), 6.44 (1 H, d, J = 8.1 Hz), 6.49 (1 H, d, J = 5.9 Hz), 6.62 (1 H, t, J = 4.6 Hz), 7.13 (1 H, dd, J = 6.6, 4.6 Hz), 7.24-7.36 (8 H, m), 7.57-7.61 (1 H, m), 8.34 (2 H, d, J = 4.9 Hz), 8.53 (1 H, d, J = 3.9 Hz)


 


61




H
546 (M − H)−
CDCl3, δ 2.71~2.81(2 H, m), 4.83(1 H, ddd, J = 6.8, 4.8, 4.8 Hz), 5.38(2 H, d, J = 4.3 Hz), 6.02(1 H, ddd, J = 15.3, 7.6, 7.6 Hz), 6.32(1 H, d, J = 15.9 Hz), 6.51(1 H, d, J = 7.3 Hz), 6.65(1 H, dd, J = 4.8, 4.8 Hz), 7.43~7.15(9 H, m), 7.69(1 H, ddd, J = 7.8, 7.8, 1.7 Hz), 8.37(2 H, d, J = 4.9 Hz), 8.56(1 H, d, J = 4.2 Hz)



















TABLE 14





Ex No.

ESI-MS
NMR (H1) chemical shift







62




453 (M + H)+


 


63




437 (M − H)−
dmso-d6, δ 2.56-2.63 (1 H, m), 2.68-2.73 (1 H, m), 3.43 (3 H, s), 4.52-4.57 (1 H, m), 6.23 (1 H, td, J = 15.6, 7.3 Hz), 6.50 (1 H, d, J = 16.1 Hz), 6.72 (1 H, t, J = 5.1 Hz), 7.14 (2 H, t, J = 8.1 Hz), 7.27 (2 H, d, J = 8.1 Hz), 7.35 (2 H, d, J = 8.3 Hz), 7.50 (1 H, t, J = 7.8 Hz), 8.34 (2 H, d, J = 4.9 Hz), 9.12 (1 H, d, J = 8.1 Hz), 12.80 (1 H, brs)


 


64




469 (M + H)+


 


65




453 (M − H)−
dmso-d6, δ 2.60 (1 H, m), 2.70 (1 H, m), 3.44 (3 H, s), 4.57 (1 H, m), 6.26 (1 H, td, J = 7.1, 15.6 Hz), 6.51 (1 H, d, J = 15.6 Hz), 6.74 (1 H, t, J = 4.6 Hz), 7.27-7.37 (6 H, m), 7.47 (1 H, td, J = 8.0, 6.1 Hz), 8.36 (2 H, d, J = 4.6 Hz), 9.16 (1 H, d, J = 8.0 Hz)


 


66




465 (M + H)+


 


67




449 (M − H)−
dmso-d6, δ 2.28 (3 H, s), 2.61 (1 H, m), 2.71 (1 H, m), 3.44 (3 H, s), 4.55 (1 H, m), 6.30 (1 H, td, J = 7.5, 15.9 Hz), 6.51 (1 H, d, J = 15.9 Hz), 6.74 (1 H, t, J = 4.4 Hz), 7.20-7.37 (7 H, m), 8.36 (2 H, d, J = 4.4 Hz), 8.93 (1 H, d, J = 7.5 Hz)


 


68




445 (M + H)+



















TABLE 15





Ex No.

ESI-MS
NMR (H1) chemical shift







69




429 (M − H)−
dmso-d6, δ 2.21 (6 H, s), 2.59 (1 H, m), 2.72 (1 H, m),  3.44 (3 H, s), 4.55 (1 H, m), 6.28 (1 H, td, J = 7.1, 15.6 Hz), 6.50 (1 H, d, J = 15.6 Hz), 6.74 (1 H, t, J = 4.9 Hz), 7.01 (2 H, d, J = 7.5 Hz), 7.15 (1 H, t, J = 7.5 Hz), 7.28 (2 H, d, J = 8.5 Hz), 7.36 (2 H, d, J = 8.5 Hz), 8.36 (2 H, d, J = 4.9 Hz), 8.70 (1 H, d, J = 8.0 Hz), 12.7 (1 H, s)


 


70




492 (M + H)+


 


71




476 (M − H)−
CDCl3, δ 2.82 (1 H, m), 2.22-2.99 (3 H, m), 3.64 (2 H, t, J = 4.0 Hz), 5.01 (1 H, m), 6.10 (1 H, m), 6.53 (1 H, d, J = 16.0 Hz), 6.63 (1 H, d, J = 8.0 Hz), 6.96 (2 H, t, J = 8.0 Hz), 7.22-7.41 (5 H, m), 8.12 (1 H, d, J = 4.0 Hz), 8.61 (1 H, d, J = 2.2 Hz).


 


72




472 (M + H)+
CDCl3, δ 3.10 (1 H, dd, J = 4.6, 17.1 Hz), 3.25 (1 H, dd, J = 4.6, 17.1 Hz), 3.86 (3 H, s), 5.06 (1 H, dt, J = 4.6, 7.8 Hz), 6.72-6.74 (1 H, m), 7.05 (1 H, t, J = 4.6 Hz), 7.10-7.43 (7 H, m), 8.56 (2 H, d, J = 4.6 Hz).


 


73




454 (M − Na)−
dmso-d6, δ 2.86 (1 H, dd, J = 4.9, 16.6 Hz), 3.10 (1 H, dd, J = 4.9, 16.6 Hz), 4.01-4.08 (1 H, m), 7.14-7.48 (8 H, m), 7.85-7.90 (1 H, m), 8.63 (2 H, d, J = 4.6 Hz)


 


74




467 (M + H)+


 


75




453 (M − Na)−
dmso-d6, δ 2.85 (1 H, dd, J = 16.9, 4.4 Hz), 3.09 (1 H, dd, J = 16.9, 4.8 Hz), 3.98 (1 H, m), 6.84 (1 H, t, J = 4.6 Hz), 7.21 (2 H, d, J = 8.6 Hz), 7.39 (1 H, t, J = 6.8 Hz), 7.46 (2 H, d, J = 6.8 Hz), 7.71 (2 H, d, J = 8.6 Hz), 7.81 (1 H, brs), 8.48 (2 H, d, J = 4.6 Hz), 9.75 (1 H, brs)


 


76




492 (M + H)+
CDCl3, δ 1.92 (4 H, br), 2.77-2.84 (1 H, m), 2.94-2.96 (4 H, brm), 3.73-3.80 (7 H, brm), 5.03 (1 H, dd, J = 12.9, 5.6 Hz), 6.12-6.20 (1 H, m), 6.52 (1 H, d, J = 15.6 Hz), 6.73-6.75 (1 H, br), 7.22-7.45 (7 H, m)



















TABLE 16





Ex No.

ESI-MS
NMR (H1) chemical shift







77




476 (M − H)−
dmso-d6, δ 1.88-1.90 (4 H, m), 2.56-2.63 (1 H, m), 2.68-2.74 (1 H, m), 2.84 (3 H, s), 3.66-3.68 (4 H, m), 4.55-4.60 (1 H, brm), 6.30 (1 H, td, J = 15.9, 7.1 Hz), 6.50 (1 H, d, J = 15.9 Hz), 7.31-7.48 (7 H, m), 9.12 (1 H, brs), 12.77 (1 H, brs)


 


78




476 (M − Na)−
dmso-d6, δ 1.87-1.89 (4 H, m), 2.61-2.66 (1 H, m), 2.75-2.82 (1 H, m), 2.84 (3 H, s), 3.65-3.67 (4 H, m), 4.07 (1 H, dd, J = 11.5, 5.4 Hz), 6.22-6.30 (1 H, m), 6.38 (1 H, d, J = 15.9 Hz), 7.30 (4 H, s), 7.32-7.45 (3 H, m), 7.76 (1 H, d, J = 6.6 Hz)


 


79




485 (M + H)+
CDCl3, δ 2.80-2.87 (1 H, m), 2.93-3.00 (1 H, m), 3.51 (3 H, s), 3.81 (3 H, s), 5.01-5.06 (1 H, m), 6.06-6.14 (1 H, m), 6.47 (1 H, d, J = 7.8 Hz), 6.52 (1 H, d, J = 15.6 Hz), 6.58 (1 H, t, J = 4.9 Hz), 7.24-7.37 (7 H, m), 8.34 (2 H, d, J = 4.9 Hz)


 


80




469 (M − H)−
CDCl3, δ 2.60-2.64 (1 H, m), 2.74-2.81 (1 H, m), 3.51 (3 H, s), 4.69-4.73 (1 H, m), 5.94 (1 H, dd, J = 15.6, 6.1 Hz), 6.35 (1 H, d, J = 15.6 Hz), 6.45 (1 H, d, J = 7.3 Hz), 6.65 (1 H, t, J = 4.9 Hz), 7.23-7.27 (3 H, m), 7.30 (1 H, s), 7.32 (1 H, d, J = 2.2 Hz), 7.38 (2 H, d, J = 8.3 Hz), 8.42 (2 H, d, J = 4.9 Hz)


 


81




469 (M − Na)−
dmso-d6, δ 2.60-2.66 (1 H, m), 2.76-2.82 (1 H, m), 3.42 (3 H, s), 4.04 (1 H, dd, J = 11.0, 5.1 Hz), 6.22 (1 H, td, J = 15.9, 7.1 Hz), 6.38 (1 H, d, J = 15.9 Hz), 6.71 (1 H, t, J = 4.6 Hz), 7.23 (2 H, d, J = 8.5 Hz), 7.29 (2 H, d, J = 8.5 Hz), 7.37 (1 H, dd, J = 9.3, 6.8 Hz), 7.44 (2 H, d, J = 7.6 Hz), 7.72 (1 H, d, J = 6.1 Hz), 8.34 (2 H, d, J = 4.6 Hz)


 


82




513 (M + H)+
CDCl3, δ 1.12 (3 H, s), 1.14 (3 H, s), 2.81-2.88 (1 H, m), 2.94-3.01 (1 H, m), 3.82 (3 H, s), 5.05 (1 H, td, J = 7.8, 5.4 Hz), 5.12-5.18 (1 H, m), 6.10-6.18 (1 H, m), 6.47-6.50 (2 H, m), 6.55 (1 H, d, J = 15.6 Hz), 7.07 (2 H, d, J = 8.3 Hz), 7.25-7.34 (3 H, m), 7.39 (2 H, d, J = 8.3 Hz), 8.27 (2 H, d, J = 4.6 Hz)


 


83




497 (M − H)−
CDCl3, δ 1.13 (3 H, s), 1.16 (3 H, s), 2.60-2.64 (1 H, m), 2.71-2.78 (1 H, m), 4.68 (1 H, td, J = 7.3, 4.6 Hz), 5.20 (1 H, td, J = 13.7, 6.6 Hz), 5.97 (1 H, dd, J = 15.9, 6.1 Hz), 6.35 (1 H, d, J = 15.9 Hz), 6.45 (1 H, d, J = 7.3 Hz), 6.60 (1 H, t, J = 4.9 Hz), 7.12 (2 H, d, J = 8.5 Hz), 7.24-7.33 (3 H, m), 7.41 (2 H, d, J = 8.3 Hz), 8.38 (2 H, d, J = 4.9 Hz)


 


84




497 (M − Na)−
dmso-d6, δ 1.07 (3 H, s), 1.09 (3 H, s), 2.63-2.67 (1 H, brm), 2.78-2.80 (1 H, brm), 4.04 (1 H, brm), 5.04-5.08 (1 H, m), 6.25-6.29 (1 H, m), 6.42 (1 H, d, J = 15.9 Hz), 6.61 (1 H, t, J = 4.6 Hz), 7.02 (2 H, d, J = 8.1 Hz), 7.33 (2 H, d, J = 8.1 Hz), 7.37-7.41 (1 H, m), 7.46 (2 H, d, J = 7.6 Hz), 7.72 (1 H, brs), 8.27 (2 H, d, J = 4.4 Hz)









Example 85
Pharmacokinetic Evaluation in Rats
Each compound was dissolved in PBS or PBS containing 10% PEG, thereby preparing 0.5 mg/mL dosing solution. The compound was administered orally or intravenously to male SD rats (7 to 9 weeks old). Blood was collected with time from the tail vein at time points up to 8 hours after the administration, and obtained blood was centrifuged to collect blood plasma. The blood plasma was pretreated by using the solid-phase extraction method, and the concentration of the compound was analyzed with LC/MS/MS (ESI negative mode).
The obtained pharmacokinetic parameters are summarized in Table 17. As the Comparative Compound, 2-[4-((3,5-dichlorobenzensulfonylamino)methyl)benzoylamino]-5-(4-(methyl-pyrimidin-2-ylamino)phenyl)pent-4-enoic acid (XXI) described in WO 99/26923 was used.









TABLE 17





Example No.
BA (%)
CLtot (ml/hr/kg)

















 4
55.0
607


 6
68.5
1185


22
61.7
306


24
42.3
756


28
80.6
895


70
63.4
532


77
20.0
962


78
26.1
996


80
47.6
906


81
50.9
966


83
40.0
1087


84
58.5
1178


Comparative Compound
1.7
1284





[“BA” in Table 17 means bioavailability, and “CLtot” means total clearance.]










As is apparent from Table 17, the therapeutic or prophylactic agents for multiple sclerosis according to the present invention showed excellent bioavailabilities and low total clearance values compared to the Comparative Compound. Therefore, the agents have the excellent effects when they are administered orally, and the effects are sustained because of their excellent in vivo stability.
Example 86
Measurement of Inhibitory Effect on Leukocyte Functions
Jurkat cells, which are the cell line originated from human acute T cell lymphoma, were allowed to react with BCECF-AM at 37° C. for 20 minutes to fluorescently label the cells. The fluorescently labelled Jurkat cells were allowed to react with ligand-expressing cells or with a ligand-immobilized plate at 37° C. for 30 minutes. After removing non-adherent cells by washing, 1% NP40 was added thereto to lyse the adherent cells, and fluorescence intensity was measured with Cytofluor 2300 (Millipore). From the obtained fluorescence intensity, the number of adherent cells was calculated. Each test compound was reacted with the Jurkat cells before the beginning of the adhesion reaction. In Table 18, the IC50 of each compound (i.e. the concentration at which the number of adherent cells is reduced by 50%) is shown.










TABLE 18







Example No.
IC50 (μM)



















4
0.247



5
0.100



8
0.069



10
0.220



12
0.220



22
0.160



24
0.220



26
0.036



28
0.056



29
0.041



31
0.041



35
0.088



37
0.160



39
0.071



41
0.950



45
0.890



47
0.930



49
0.079



51
0.100



53
0.120



55
0.420



57
0.110



59
0.043



61
0.033



67
0.280



69
0.530



77
0.049



78
0.054



80
0.095



81
0.082



83
0.017



84
0.030










As is apparent from Table 18, the therapeutic or prophylactic agents of the present invention clearly inhibit functions of leukocytes involved in the development of multiple sclerosis, so that they exhibit therapeutic and/or prophylactic actions against multiple sclerosis.
Example 87
Measurement of Inhibitory Effect on Inflammatory Mediator Production by Leukocytes
A mixture of human peripheral blood and physiological saline containing 3% dextran was left to stand for 30 minutes and then the upper layer was recovered. The upper layer was overlaid on Histopaque 1077 (SIGMA), and the resultant was centrifuged at 1400 rpm for 30 minutes. The supernatant was removed by aspiration and a buffer was added to the precipitate to prepare a neutrophil suspension (4×105 cells/mL). To the neutrophil suspension, ionomycin was added and the mixture was incubated at 37° C. for 30 minutes, followed by quantification of leukotriene B4 by EIA (Amersham, Biotrak EIA system). Each test compound was added to the neutrophil suspension before adding ionomycin. In Table 19, the IC50 of each compound (i.e. the concentration at which the production of Leukotriene B4 is inhibited by 50%) is shown.










TABLE 19







Example No.
IC50 (μM)



















4
52.3



6
5.63



22
176



28
7.40



33
16.3



67
30.0










As is apparent from Table 19, the therapeutic or prophylactic agents of the present invention inhibit production of inflammatory mediators by leukocytes involved in the development of multiple sclerosis, so that they exhibit therapeutic and/or prophylactic actions against multiple sclerosis.
Example 88
Inhibitory Effect of Compounds Against Mouse Experimental Autoimmune Encephalomyelitis Model
This method was carried out in accordance with the literature “Int. Immunol., 9, 1243-1251 (1997)”.
A PBS solution containing 2 mg/mL partial synthetic peptide (PLP139-151) of proteolipid protein was mixed with an equal amount of Freund's complete adjuvant, and the resulting mixture was inoculated intracutaneously into both lateral regions of 7-week-old female SJL mouse (Charles River Laboratories Japan) in a total amount of 0.1 mL (0.05 mL per one side). The compounds described in Example 77, Example 78, Example 80, Example 81, Example 83 and Example 84 were orally administered at a dose of 50 mg/kg every day from one day before the inoculation, and neurological symptoms was scored (0: normal, 1: limp tail or hind limb weakness, 2: limp tail and hind limb weakness, 3: partial hind limb paralysis, 4: complete hind limb paralysis, 5: moribund state) at Days 11, 12 or 14. The scoring was carried out by using the method described in Current Protocols in Immunology (John Wiley & Sons, Inc).
The score of neurological symptoms in mouse rose to 1.0-2.1 by inoculation of PLP139-151. On the other hand, increase in the score of neurological symptoms was remarkably reduced when the test compounds were orally administered. The rate of reduction by each compound was as follows: the compound described in Example 77, 40%; the compound described in Example 78, 60%; the compound described in Example 80, 60%; the compound described in Example 81, 68%; the compound described in Example 83, 70%; and the compound described in Example 84, 67%.
As is apparent from the results, the therapeutic or prophylactic agents of the present invention have a remarkable inhibitory effect against neurological symptoms of multiple sclerosis when orally administered.
INDUSTRIAL AVAILABILITY
The glycine derivatives or pharmaceutically acceptable salts thereof can be used as a therapeutic or prophylactic agent for multiple sclerosis.

## Claims

1. A method for treating multiple sclerosis comprising administering an effective amount of (a) a compound of Formula (I) to a subject in need thereof:



wherein
R1 represents hydrogen or C1-C5 alkyl:
X independently represents fluoro, chloro, bromo, iodo or C1-C3 alkyl;
V represents —CH═CH— or —C≡C—;
Y represents Formula (II) or Formula (III):




wherein
R2 represents C1-C5 alkyl or C1-C3 alkoxy;
R3 represents hydrogen or C1-C5 alkyl;
m represents an integer of 0 to 3;
n represents 0 or 1;
p represents an integer of 0 to 2;
W represents —O— or —N(R4)—
wherein
R4 represents hydrogen, C1-C5 alkyl, C3-C6 alkenyl, phenyl, benzyl, benzyl substituted with one or two R5s, tetrahydropyranyl, —(CH2)q—O—CH3, pyridylmethyl, —(CH2)q—CN, C4-C7 cycloalkymethyl or thiazol-4-ylmethyl;
R5 represents hydroxyl or C1-C3 alkoxy; and
q represents an integer of 1 to 3;
or (b) a pharmaceutically acceptable salt of the compound of said Formula (I).

2. The method of claim 1, wherein in said Formula (I),
V is —CH═CH—; and
when Y is represented by the Formula (II), m is 0; or
when Y is represented by the Formula (III), p is 1.

3. The method of claim 2, wherein in said Formula (I),
R1 is hydrogen; and
when Y is represented by the Formula (II), W is —N(R4)— and R4 is C1-C3 alkyl, cyanoethyl, tetrahydropyranyl or phenyl; or
when Y is represented by the Formula (III), n is 0 and R3 is Cl-C3 alkyl.

4. The method of claim 3, wherein in said Formula (I),
X is independently chloro or methyl;
V is trans —CH═CH—; and
when Y is represented by the Formula (II), W is —N(R4)— and R4 is methyl or isopropyl; or
when Y is represented by the Formula (III), R3 is methyl.