# Patent

## Title
1-(2H)-isoquinolone derivative

## Abstract

The present invention provides: a compound represented by the following formula (I):




[wherein Y1 and Y4 represent a hydrogen atom or a halogen atom; either one of Y2 and Y3 represents —NR1R2, and the other represents a hydrogen atom or a halogen atom; X represents an aryl group or a heteroaryl group that may be substituted; R1 represents a hydrogen atom, or a C1-8 alkyl group that may be substituted; and R2 represents a C1-8 alkyl group that is substituted with one or more substituents, —COOR3, —COR4, —COSR5, —CONR6R7, —NR22R23, or —C═NR24R25; or R1 and R2, together with a nitrogen atom to which they are bonded, may form a 4- to 10-membered hetero ring containing at least one nitrogen atom (wherein the hetero ring may be substituted with one or more substituents selected from Group C)], a prodrug thereof, or a pharmaceutically acceptable salt thereof; and a pharmaceutical, a pharmaceutical composition, or the like, which comprises the compound.

## Background
CONTINUING DATA
This application is a 371 of PCT/JP05/01764 filed Feb. 7, 2005.
TECHNICAL FIELD
The present invention relates to a novel 1-(2H)-isoquinolone derivative and a pharmaceutical comprising the same as an active ingredient. The present invention particularly relates to an antitumor agent useful as a therapeutic agent for diseases such as solid cancer.
BACKGROUND ART
Regarding a method for synthesizing a 1-(2H)-isoquinoline derivative having a substituent at the 3-position, several reports have already been made. For example, in 1968, Rose et al. have reported a method of allowing ammonia to act on a 3-aryl isocoumarin derivative, so as to synthesize a 1-(2H)-isoquinolone derivative (refer to Non-Patent Document 1). In addition, in 1982, Poindexter has reported a method of synthesizing a 1-(2H)-isoquinolone derivative by the reaction of N,2-dimethylbenzamide with a nitrile derivative (refer to Non-Patent Document 2).
Moreover, the pharmacological activity of such an isoquinolone derivative has also been reported. Researchers of Octamer have reported an isoquinolone derivative having anti-inflammatory action (refer to Patent Document 1). Also, researchers of Guilford have reported that 3-phenyl-1-(2H)-isoquinolone has an inhibitory activity on poly(ADP-ribose)polymerase, and that it is used as a radiosensitizer (refer to Patent Document 3). Moreover, with regard to an isoquinolone derivative having anticancer action, in 1989, researchers of Du Pont have reported that a 3-(1-naphthyl)-1-(2H)-isoquinolone derivative exhibits anticancer action (refer to Patent Document 2). Thereafter, Won-Jea Cho et al. have reported a 3-aryl isoquinolone derivative having anticancer action (refer to Non-Patent Documents 3 to 8). However, the anticancer activities of such isoquinolone derivatives have not been necessarily sufficient. Thus, it has been desired that a compound having higher anticancer activity and also having preferred physical properties be developed.

    [Patent Document 1] International Publication WO98/51307
    [Patent Document 2] U.S. Pat. No. 4,942,163
    [Patent Document 3] International Publication WO99/11624
    [Non-Patent Document 1] J. Chem. Soc. (C), pp. 2205-2208 (1968)
    [Non-Patent Document 2] J. Org. Chem., vol. 47, pp. 3787-3788 (1982)
    [Non-Patent Document 3] Arch. Pharm. Res., vol. 20, pp. 264-268 (1997)
    [Non-Patent Document 4] Bioorg. Med. Chem. Lett., vol. 8, pp. 41-46 (1998)
    [Non-Patent Document 5] Arch. Pharm. Res., vol. 24, pp. 276-280 (2001)
    [Non-Patent Document 6] Bioorg. Med. Chem., vol. 10, pp. 2953-2961 (2002)
    [Non-Patent Document 7] Tetrahedron Lett., vol. 45, pp. 2763-2766 (2004)
    [Non-Patent Document 8] J. Org. Chem., vol. 69, pp. 2768-2772 (2004)


DISCLOSURE OF THE INVENTION
Problems to be Solved by the Invention
It is an object of the present invention to provide a compound, which has high antitumor activity and is useful as a therapeutic and preventive agent effective for proliferative diseases such as cancer, a production method thereof, an intermediate compound useful for such production, and a pharmaceutical composition comprising such a compound.
Means for Solving the Problems
The present inventors have conducted intensive studies directed towards providing a novel therapeutic and preventive agent, which is effective for proliferative diseases such as cancer. As a result, the inventors have found that the compound of the present invention has excellent antitumor activity, thereby completing the present invention.
That is to say, an aspect of the present invention provides a compound represented by the following formula (1):




[wherein,

Y1 and Y4 are independently selected from a hydrogen atom and a halogen atom,
either one of Y2 and Y3 represents —NR1R2, and the other represents a hydrogen atom or a halogen atom;
X represents an aryl group or a heteroaryl group, and the aryl group or heteroaryl group may be substituted with one or more substituents selected from Group A;
Group A consists of a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, an aryl group, a heteroaryl group, —OR11, and —NR12R13), a C2-7 alkenyl group (wherein the C2-7 alkenyl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group), a C2-7 alkynyl group (wherein the C2-7 alkynyl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group), a halogen atom, a hydroxyl group, an aryl group, a heteroaryl group, a cyano group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, which may be substituted with —OR11 or —NR12R13, an aryl group, an aryl C1-6 alkyl group, and a heteroaryl group), —S(O)nR14 (wherein n represents an integer between 0 and 2), a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more groups selected from an aryl group, a heteroaryl group, —OR11, —NR12R13, and a halogen atom), a 4- to 7-membered hetero ring group (wherein the hetero ring group may be substituted with one or more substituents selected from Group D), an aryloxy group, a heteroaryloxy group, and a C1-6 alkylenedioxy group; wherein R11, R12, R13, and R14 are independently selected from a hydrogen atom, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, an amino group, a C1-6 alkylamino group, a di(C1-6 alkyl)amino group, an aryl group, and a heteroaryl group), an aryl group, and a heteroaryl group; or R12 and R13, together with nitrogen to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom;
R1 represents a hydrogen atom, or a C1-8 alkyl group that may be substituted with one or more substituents selected from Group B;
R2 represents a C1-8 alkyl group that is substituted with one or more substituents selected from Group B, —COOR3, —COR4, COSR5, CONR6R7, —NR22R23, or —N═CR24R25; or R1 and R2, together with a nitrogen atom to which they are bonded, may form a 4- to 10-membered hetero ring containing at least one nitrogen atom (wherein the hetero ring may be substituted with one or more substituents selected from Group C); wherein
R3 represents a hydrogen atom, a C1-8 alkyl group, a C2-7 alkenyl group, a C2-7 alkynyl group (wherein the alkyl group, alkenyl group, and alkynyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a hydroxyl group, a C1-6 alkoxy group, and a phenyl group), a C3-8 cycloalkyl group, an aryl group, and a heteroaryl group), a C3-8 cycloalkyl group, an aryl group, or a heteroaryl group;
R4 is selected from a hydrogen atom, a C1-8 alkyl group that may be substituted with one or more R20s, an aryl group, and a heteroaryl group;
R5 is selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
R20 represents a hydroxyl group, a halogen atom, an aryl group, a heteroaryl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a halogen atom, an aryl group, and a heteroaryl group), an aryloxy group, a heteroaryloxy group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, an aryl group, an aryl C1-6 alkyl group, a heteroaryl group, and —COOR21), or a 4- to 7-membered hetero ring group containing at least one nitrogen atom (wherein the hetero ring group may be substituted with a C1-8 alkyl group);
R21 represents a C1-8 alkyl group, an aryl C1-6 alkyl group, or an aryl group;
R6 and R7 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
R22 and R23 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
R24 and R25 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
Group B consists of a halogen atom, a C1-6 alkylcarbonyl group, a C1-6 alkylaminocarbonyl group, a C1-6 alkoxycarbonyl group, an aryl group (wherein the aryl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, a C1-8 haloalkyl group, a hydroxyl group, a C1-6 alkoxy group, and a C1-6 haloalkoxy group), a heteroaryl group, —OR31, and —NR32R33; wherein
R31, R32, and R33 are independently selected from a hydrogen atom, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, an aryl group, an amino group, a C1-6 alkylamino group, and a di(C1-6 alkyl)amino group), an aryl group, a heteroaryl group, and —COOR34; wherein R34 represents a C1-8 alkyl group, an aryl C1-6 alkyl group, or an aryl group; or
R32 and R33, together with a nitrogen atom to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom (wherein the hetero ring group may be substituted with one or more groups selected from Group D);
Group C consists of an aryl group, a heteroaryl group, a C1-6 alkylcarbonyl group, a C1-6 alkylaminocarbonyl group, a C1-6 alkoxycarbonyl group, a hydroxyl group, a C1-8 alkyl group, a C1-6 alkoxy group (wherein the alkyl group and alkoxy group may be substituted with one or more substituents selected from a halogen atom, an aryl group, a heteroaryl group, —NR41R42, and —OR43), an aryloxy group, and a heteroaryloxy group; wherein
R41, R42, and R43 are independently selected from a hydrogen atom, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, an amino group, a C1-6 alkylamino group, and a di(C1-6 alkyl)amino group), an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group; or
R41 and R42, together with a nitrogen atom to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom; and
Group D consists of a halogen atom, an aryl group, a heteroaryl group, an aryloxy group, a heteroaryloxy group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, a hydroxy C1-6 alkyl group, a C1-6 alkoxy C1-6 alkyl group, a C1-6 alkylamino C1-6 alkyl group, a di(C1-6 alkyl)amino C1-6 alkyl group, an aryl group, an aryl C1-6 alkyl group, and a heteroaryl group), a hydroxyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, a C1-6 alkylamino group, and di(C1-6 alkyl)amino group), a C1-6 alkoxycarbonyl group, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, a C1-6 alkoxycarbonyl group, an amino group, an aryl group, a heteroaryl group, a C1-6 alkylamino group, and a di(C1-6 alkyl)amino group)], a prodrug thereof, or a pharmaceutically acceptable salt thereof.
Another aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein Y3 represents —NR1R2.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein
Y1, Y2, and Y4 represent a hydrogen atom;
Y3 represents —NR1R2;
X represents an aryl group or a heteroaryl group, and the aryl group may be substituted with one or more substituents selected from Group A;
Group A consists of a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom and —NR12R13), a halogen atom, a hydroxyl group, an aryl group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group and an aryl group), —SR14, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more groups selected from —OR11 and a halogen atom), and a 4- to 7-membered hetero ring group (wherein the nitrogen atom of the hetero ring group may be substituted with one or two substituents selected from a C1-8 alkyl group and a C1-6 alkoxycarbonyl group); wherein
R11, R12, R13, and R14 are independently selected from a hydrogen atom, a C1-8 alkyl group, and an aryl group; or R12 and R13, together with nitrogen to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom;
R1 represents a hydrogen atom, or a C1-8 alkyl group that may be substituted with one or more substituents selected from Group B;
R2 represents a C1-8 alkyl group that is substituted with one or more substituents selected from Group B, —COOR3, —COR4, —COSR5, —CONR6R7, —NR22R23, or —N═CR24R25; or R1 and R2, together with a nitrogen atom to which they are bonded, may form a 4- to 10-membered hetero ring containing at least one nitrogen atom (wherein the hetero ring may be substituted with one or more substituents selected from Group C); wherein
R3 represents a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a hydroxyl group, a C1-6 alkoxy group, and a phenyl group), a C3-8 cycloalkyl group, an aryl group, and a heteroaryl group), a C2-7 alkenyl group, a C2-7 alkynyl group, a C3-8 cycloalkyl group, an aryl group, or a heteroaryl group;
R4 is selected from a hydrogen atom, a C1-8 alkyl group that may be substituted with one or more R20s, an aryl group, and a heteroaryl group, and R5 is selected from a C1-8 alkyl group and an aryl group;
R20 represents a hydroxyl group, a halogen atom, an aryl group, a heteroaryl group, a C1-6 alkoxy group, an aryloxy group, an aryl C1-6 alkoxy group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, an aryl group, and —COOR21), or a 4- to 7-membered hetero ring group containing at least one nitrogen atom (wherein the hetero ring group may be substituted with a C1-8 alkyl group);
R21 represents a C1-8 alkyl group, an aryl C1-6 alkyl group, or an aryl group;
R6 and R7 are independently selected from a hydrogen atom, a C1-8 alkyl group, and an aryl group;
R22, R23, R24, and R25 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
Group B consists of a halogen atom, a C1-6 alkoxycarbonyl group, an aryl group, —OR3, and —NR32R33; wherein
R31, R32, and R33 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, a heteroaryl group, and —COOR34; wherein R34 represents a C1-8 alkyl group, an aryl C1-6 alkyl group, or an aryl group; or
R32 and R33, together with a nitrogen atom to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom; and
Group C consists of a C1-6 alkoxycarbonyl group, a hydroxyl group, a C1-8 alkyl group, an aryl C1-6 alkoxy C1-8 alkyl group, a hydroxy C1-8 alkyl group, an aryloxy group, and a heteroaryloxy group.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein R1 and R2, together with a nitrogen atom to which they are bonded, form a 4- to 10-membered hetero ring containing at least one nitrogen atom, wherein the hetero ring may have a substituent selected from Group C.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein Y2 or Y3 represents a morpholinyl group, an azetidinyl group, a pyrrolidinyl group, or piperidinyl group, and the hetero ring group may be substituted with one or more substituents selected from a hydroxyl group and a hydroxy C1-6 alkyl group.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein Y2 or Y3 represents a morpholinyl group, an azetidinyl group, a pyrrolidinyl group, a 3-hydroxypyrrolidinyl group, a 2-hydroxymethylpyrrolidinyl group, a 3-hydroxymethylpyrrolidinyl group, a piperidinyl group, a 3-hydroxypiperidinyl group, a 4-hydroxypiperidinyl group, a 2-hydroxymethylpiperidinyl group, a 3-hydroxymethylpiperidinyl group, a 4-hydroxymethylpiperidinyl group, or a 4-hydroxy-4-hydroxymethylpiperidinyl group.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein R1 represents a hydrogen atom or a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from Group B); and R2 represents a C1-8 alkyl group that is substituted with one or more substituents selected from Group B, —COOR3, or —COCH2NHCOOR21.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein R1 represents a hydrogen atom; and R2 represents —COOR3, —COSR5, —CONR6R7, or —COR4.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein R2 represents —COOR3.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein R3 represents a C1-8 alkyl group, a C2-7 alkenyl group, or a C2-7 alkynyl group (wherein the alkyl group, alkenyl group, and alkynyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, or a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a hydroxyl group, a C1-6 alkoxy group, and a phenyl group)).
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein R3 represents a C1-8 alkyl group that is substituted with one or more hydroxyl groups, a C2-7 alkenyl group that is substituted with one or more hydroxyl groups, or a C2-7 alkynyl group that is substituted with one or more hydroxyl groups.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein R3 represents a C1-6 alkyl group that is substituted with one or more hydroxyl groups.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein Y2 or Y3 represents a bis(hydroxy C1-6 alkyl)amino group, a methyl(hydroxy C1-6 alkyl)amino group, a hydroxy C1-6 alkylamino group, a methyl(morpholinyl C1-6 alkyl)amino group, an amino C1-6 alkylamino group, a C1-6 alkoxycarbonylamino group, or a hydroxy C1-6 alkoxycarbonylamino group.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein Y2 or Y3 represents a bis(2-hydroxyethyl)amino group, a methyl(2-hydroxyethyl)amino group, a 2-hydroxyethylamino group, a methyl(2-morpholin-4-ylethyl)amino group, a methyl(2-aminoethyl)amino group, or a 2-hydroxyethyloxycarbonylamino group.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein X represents a phenyl group or a heteroaryl group, and the phenyl group or heteroaryl group may be substituted with one or more substituents selected from Group A.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein X represents a phenyl group, and the phenyl group may be substituted with one or more substituents selected from Group A.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein X represents a phenyl group or a heteroaryl group, and the phenyl group or heteroaryl group may be substituted with one or more substituents selected from Group A; and Group A consists of a C1-8 alkyl group that is substituted with one or more halogen atoms, an aryl group, a C1-6 alkylthio group, a di(C1-6 alkyl)amino group, a 4- to 7-membered hetero ring group containing at least one nitrogen atom, a C1-8 alkyl group, a C2-7 alkenyl group, a C2-7 alkynyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more halogen atoms), and a hydroxyl group.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein X represents a phenyl group, and the phenyl group may be substituted with one or more substituents selected from an ethyl group, a trifluoromethyl group, a trifluoromethoxy group, a methylthio group, a methoxy group, a chloro group, a phenyl group, a dimethylamino group, a morpholinyl group, a piperidinyl group, and a pyrrolidinyl group.
A further aspect of the present invention provides the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof, wherein X represents a phenyl group, which has, at least at the 2-position thereof, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more halogen atoms), a C1-6 alkylthio group, a di(C1-6 alkyl)amino group, a 4- to 7-membered hetero ring group containing at least one nitrogen atom, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more halogen atoms), a phenyl group having an aryl group; or X represents a phenyl group, which has a hydroxyl group at least at the 4-position thereof.
A further aspect of the present invention provides a compound represented by the following formula IV:




(wherein X represents a phenyl group or a heteroaryl group, and the phenyl group or heteroaryl group may be substituted with one or more substituents selected from Group A; and L represents a halogen atom that is bonded to the 6- or 7-position on an isoquinolone ring).

A further aspect of the present invention provides a method for producing the compound represented by the above formula (1), which comprises amination of the compound represented by formula VI.
A further aspect of the present invention provides a method for producing the compound represented by the above formula (1), which comprises allowing the compound represented by the formula VI to react with a suitable amine in the presence of a suitable solvent (for example, toluene, THF, 1,4-dioxane, xylene, dimethoxyethane, etc.), a suitable palladium catalyst (for example, Pd(OAc)2, Pd2dba3, PdCl2[P(o-tol)3]2, Pd(O2CCF3)2, etc.), a ligand (for example, P(o-tol)3, BINAP, DPPF, P(t-Bu)3, 2-dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl, 2-(di-t-butylphosphino)biphenyl, 2-(dicyclohexylphosphino)biphenyl, etc.), and a base (for example, t-BuONa, LiHMDS, Cs2CO3, K3PO4, etc.).
A further aspect of the present invention provides a pharmaceutical composition, which comprises, as an active ingredient, the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof.
A further aspect of the present invention provides a therapeutic or preventive agent used for malignant tumor, which comprises, as an active ingredient, the compound represented by the above formula (1), the prodrug thereof, or the pharmaceutically acceptable salt thereof. Examples of malignant tumor herein include solid cancer.
Effects of the Invention
The present invention provides a 1-(2H)-isoquinolone derivative having excellent antitumor action. In addition, the present invention also provides a compound, which is useful as a therapeutic and preventive agent effective for proliferative diseases such as cancer, a production method thereof, an intermediate compound useful for such production, and a pharmaceutical composition comprising such a compound.


EMBODIMENT FOR CARRYING OUT THE INVENTION
In the present invention, the term “aryl group” is used to mean an aromatic hydrocarbon group containing 6 to 10 carbon atoms, which includes phenyl, 1-naphthyl, 2-naphthyl, and others.
In the present invention, the term “heteroaryl group” is used to mean a 5- to 10-membered aromatic hetero ring group containing a heteroatom selected from one or more oxygen atoms, nitrogen atoms, and sulfur atoms. Examples of such a heteroaryl group may include furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, triazolyl, tetrazolyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, indolyl, quinolinyl, and isoquinolyl.
In the present invention, the term “halogen atom” is used to mean a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, or the like. A preferred example of such a halogen atom is a fluorine atom.
In the present invention, the term “C1-8 alkyl group” is used to mean a linear or branched alkyl group containing 1 to 8 carbon atoms. Examples of such a C1-8 alkyl group may include methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, 3-methylbutyl, 2-methylbutyl, 1-methylbutyl, 1-ethylpropyl, n-hexyl, 4-methylpentyl, 3-methylpentyl, 2-methylpentyl, 1-methylpentyl, 3-ethylbutyl, and 2-ethylbutyl. A preferred example of such a C1-8 alkyl group is a linear or branched C1-8 alkyl group, and a more preferred example is a linear or branched C1-6 alkyl group.
In the present invention, the term “C3-8 cycloalkyl group” is used to mean a cyclic or partially cyclic alkyl group containing 3 to 8 carbon atoms. Examples of such a C3-8 cycloalkyl group may include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, methylcyclopropyl, cyclopropylmethyl, and cyclohexylmethyl.
In the present invention, the term “C2-7 alkenyl group” is used to mean a linear or branched alkenyl group containing 2 to 7 carbon atoms. Examples of such a C2-7 alkenyl group may include ethenyl(vinyl), 1-propenyl, 2-propenyl(allyl), propen-2-yl, and 3-butenyl(homoallyl).
In the present invention, the term “C2-7 alkynyl group” is used to mean a linear or branched alkynyl group containing 2 to 7 carbon atoms. Examples of such a C2-7 alkynyl group may include ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, and 3-butynyl.
In the present invention, the term “C1-6 alkoxy group” is used to mean an alkyloxy group having a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms, as alkyl portions thereof. Examples of such a C1-6 alkoxy group may include methoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, s-butoxy, i-butoxy, t-butoxy, n-pentyloxy, 3-methylbutoxy, 2-methylbutoxy, 1-methylbutoxy, 1-ethylpropoxy, n-hexyloxy, 4-methylpentyloxy, 3-methylpentyloxy, 2-methylpentyloxy, 1-methylpentyloxy, 3-ethylbutoxy, 2-ethylbutoxy, cyclopropoxy, cyclobutoxy, cyclopentyloxy, cyclohexyloxy, and cyclopropylmethoxy.
In the present invention, the term “aryloxy group” is used to mean an aryloxy group having, as an aryl portion thereof, an aromatic hydrocarbon group containing 6 to 10 carbon atoms, which has already been defined above. Examples of such an aryloxy group may include phenoxy, 1-naphthyloxy, and 2-naphthyloxy.
In the present invention, the term “heteroaryloxy group” is used to mean a heteroaryloxy group having, as a heteroaryl portion thereof, a 5- to 10-membered aromatic hetero ring group containing a heteroatom selected from one or more oxygen atoms, nitrogen atoms, and sulfur atoms, which has already been defined above. Examples of such a heteroaryloxy group may include furyloxy, thienyloxy, pyrrolyloxy, imidazolyloxy, pyrazolyloxy, oxazolyloxy, isoxazolyloxy, thiazolyloxy, isothiazolyloxy, oxadiazolyloxy, thiadiazolyloxy, triazolyloxy, tetrazolyloxy, pyridinyloxy, pyrimidinyloxy, pyrazinyloxy, pyridazinyloxy, indolyloxy, quinolinyloxy, and isoquinolinyloxy.
In the present invention, the term “C1-6 haloalkyl group” is used to mean an alkyl group substituted with one or more halogen atoms, which has, as alkyl portions thereof, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms. Examples of such a C1-6 haloalkyl group may include trifluoromethyl, trichloromethyl, chlorodifluoromethyl, 2,2,2-trifluoroethyl, perfluoroethyl, 2,2,2-trichloroethyl, bromomethyl, dibromomethyl, tribromomethyl, iodomethyl, difluoromethyl, and dichloromethyl.
In the present invention, the term “C1-6 haloalkoxy group” is used to mean an alkoxy group substituted with one or more halogen atoms, which has, as alkyl portions thereof, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms. Examples of such a C1-6 haloalkoxy group may include trifluoromethoxy, trichloromethoxy, chlorodifluoromethoxy, 2,2,2-trifluoroethoxy, perfluoroethoxy, 2,2,2-trichloroethoxy, bromomethoxy, dibromomethoxy, tribromomethoxy, iodomethoxy, difluoromethoxy, and dichloromethoxy.
In the present invention, the term “C1-6 alkylamino group” is used to mean an alkylamino group having, as alkyl portions thereof, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms. Examples of such a C1-6 alkylamino group may include methylamino, ethylamino, n-propylamino, i-propylamino, n-butylamino, s-butylamino, i-butylamino, t-butylamino, n-pentylamino, 3-methylbutylamino, 2-methylbutylamino, 1-methylbutylamino, 1-ethylpropylamino, n-hexylamino, 4-methylpentylamino, 3-methylpentylamino, 2-methylpentylamino, 1-methylpentylamino, 3-ethylbutylamino, and 2-ethylbutylamino.
In the present invention, the term “di(C1-6 alkyl)amino group” is used to mean a dialkylamino group having, as two alkyl portions, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms. The above two alkyl portions may be either identical to or different from each other. Examples of such a di(C1-6 alkyl)amino group may include dimethylamino, diethylamino, di-n-propylamino, di-i-propylamino, di-n-butylamino, methyl-n-butylamino, methyl-s-butylamino, methyl-i-butylamino, methyl-t-butylamino, ethyl-n-butylamino, ethyl-s-butylamino, ethyl-i-butylamino, and ethyl-t-butylamino.
In the present invention, the term “C1-6 alkylcarbonyl group” is used to mean an alkylcarbonyl group having, as alkyl portions thereof, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms.
In the present invention, the term “C1-6 alkylaminocarbonyl group” is used to mean an alkylaminocarbonyl group having, as alkyl portions thereof, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms.
In the present invention, the term “amino C1-6 alkoxycarbonyl group” is used to mean an aminoalkoxycarbonyl group having, as alkoxy portions thereof, a linear or branched alkoxy group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkoxy group containing 3 to 6 carbon atoms.
In the present invention, the term “hydroxy C1-6 alkyl group” is used to mean a hydroxyalkyl group having, as alkyl portions thereof, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms.
In the present invention, the term “C1-6 alkylthio group” is used to mean an alkylthio group having, as alkyl portions thereof, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms. Examples of such a C1-6 alkylthio group may include methylthio, ethylthio, n-propylthio, i-propylthio, n-butylthio, s-butylthio, i-butylthio, t-butylthio, n-pentylthio, 3-methylbutylthio, 2-methylbutylthio, 1-methylbutylthio, 1-ethylpropylthio, n-hexylthio, 4-methylpentylthio, 3-methylpentylthio, 2-methylpentylthio, 1-methylpentylthio, 3-ethylbutylthio, and 2-ethylbutylthio.
In the present invention, the term “aryl C1-6 alkyl group” is used to mean an aralkyl group, which has, as an aryl group thereof, the above defined aromatic hydrocarbon group containing 6 to 10 carbon atoms, and as alkyl portions thereof, a linear or branched alkyl group containing 1 to 6 carbon atoms, and a cyclic or partially cyclic alkyl group containing 3 to 6 carbon atoms. Examples of such an aryl C1-6 alkyl group may include benzyl, 1-phenethyl, and 2-phenethyl.
In the present invention, the term “a 4- to 7-membered hetero ring containing at least one nitrogen atom” is used to mean a saturated or unsaturated hetero ring containing 4 to 7 atoms in the ring thereof, which contains one or more nitrogen atoms and may also contain one or more hetero atoms selected from oxygen atoms and sulfur atoms. Aromatic hetero ring is also included herein. Herein, sulfur atoms contained in the ring may be oxidized, so as to form S(O)n (wherein n=1 or 2). Specific examples may include azetidine, pyrrolidine, piperidine, piperazine, pyrrole, imidazole, imidazoline, pyrazole, pyrazoline, oxazoline, morpholine, thiomorpholine, oxothiomorpholine, dioxothiomorpholine, pyridine, pyrazine, pyrimidine, pyridazine, hexamethyleneimine, and octahydroisoquinoline.
In the present invention, the term “4- to 7-hetero ring group containing at least one nitrogen atom” is used to mean a saturated or unsaturated hetero ring group containing 3 to 7 atoms in the ring thereof, which contains one or more nitrogen atoms and may also contain one or more heteroatoms selected from oxygen atoms and sulfur atoms. Herein, sulfur atoms contained in the ring may be oxidized, so as to form S(O)n (wherein n=1 or 2). Such a hetero ring group may have a monocyclic ring, condensed ring, or spiro ring skeleton, or may also be an aromatic hetero ring group. Specific examples may include azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, pyrrolyl, imidazolyl, imidazolinyl, pyrazolyl, pyrazolinyl, oxazolinyl, morpholinyl, thiomorpholinyl, oxothiomorpholinyl, dioxothiomorpholinyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, hexamethyleneimino, and octahydroisoquinolyl. The position of the above hetero ring group to be substituted is not particularly limited, as long as it is a substitutable position on a carbon atom or nitrogen atom.
In the present invention, the term “4- to 7-membered hetero ring group” is used to mean a saturated or unsaturated hetero ring group containing 4 to 7 atoms in the ring thereof, which may contain one or more heteroatoms or heteromolecules selected from nitrogen atoms, oxygen atoms, and sulfur atoms. An aromatic hetero ring is also included therein. Herein, sulfur atoms contained in the ring may be oxidized, so as to form S(O)n (wherein n=1 or 2). Specific examples may include azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, pyrrolyl, imidazolyl, imidazolinyl, pyrazolyl, pyrazolinyl, oxazolinyl, morpholinyl, thiomorpholinyl, oxothiomorpholinyl, dioxothiomorpholinyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, hexamethyleneimino, furyl, tetrahydrofuryl, thienyl, tetrahydrothienyl, dioxolanyl, oxathiolanyl, and dioxanyl. The position of the above hetero ring group to be substituted is not particularly limited, as long as it is a substitutable position on a carbon atom or nitrogen atom.
In the present invention, the term “4- to 10-membered hetero ring group containing at least one nitrogen atom” is used to mean a saturated or unsaturated hetero ring containing 3 to 10 atoms in the ring thereof, which contains one or more nitrogen atoms and may also contain one or more heteroatoms selected from oxygen atoms and sulfur atoms. An aromatic hetero ring, or a bicyclo hetero ring containing a condensed ring skeleton and a spiro ring skeleton, is also included therein. Herein, sulfur atoms contained in the ring may be oxidized, so as to form S(O)n (wherein n=1 or 2). Specific examples may include azetidine, pyrrolidine, piperidine, piperazine, pyrrole, imidazole, triazole, tetrazole, imidazoline, pyrazole, pyrazoline, oxazoline, morpholine, thiomorpholine, oxothiomorpholine, dioxothiomorpholine, hexamethyleneimine, decahydroquinoline, decahydroisoquinoline, indole, and octahydroindole.
A hetero ring group containing a spiro ring skeleton includes hetero ring groups containing hetero rings represented by the following formulas:




In the present invention, the term “—S(O)nR14” is used to mean —SR14, —SOR14, or —SO2R14. For example, such —S(O)nR14 includes —S(O)n (C1-6 alkyl group), —S(O)n (aryl group), and —S(O)n (heteroaryl group). Specific examples of “—S(O)nR14” may include methylthio, ethylthio, n-propylthio, isopropylthio, trifluoromethylthio, benzylthio, 4-methylphenylthio, phenylthio, methylsulfinyl, ethylsulfinyl, n-propylsulfinyl, isopropylsulfinyl, trifluoromethylsulfinyl, benzylsulfinyl, 4-methylphenylsulfinyl, phenylsulfinyl, methylsulfonyl, ethylsulfonyl, n-propylsulfonyl, isopropylsulfonyl, trifluoromethylsulfonyl, benzylsulfonyl, 4-methylphenylsulfonyl, and phenylsulfonyl.
In the present invention, the term “C1-6 alkylenedioxy group” is a divalent group “—O—(C1-6 alkylene) —O—”, which contains a linear or branched alkylene group containing 1 to 6 carbon atoms and is bonded to a carbon atom adjacent thereto. Examples of such a C1-6 alkylenedioxy group may include methylenedioxy, ethylenedioxy, methylmethylenedioxy, and dimethylmethylenedioxy.
In the present specification, when any given group is substituted with one or more substituents, such substituents may be either identical to or different from one another. The number of such substituents ranges from 1 to the maximum number, which is substitutable on a chemical structure. The number of substituents is, for example, between 1 and 7, typically between 1 and 5, and particularly between 1 and 3.
The present invention includes a salt of the compound represented by the formula (1) and a pharmacologically acceptable salt of the prodrug of the above compound. These salts are produced by allowing the above compound or the prodrug thereof to come into contact with an acid or base, which can be used in production of a pharmaceutical. Examples of such a salt may include: hydrochloride, hydrobromide, hydroiodide, sulfate, sulfonate, phosphate, phosphonate, carboxylates such as acetate, citrate, malate, or salicylate, or alkali metal salts such as a sodium salt or a potassium salt; and alkali earth metal salts such as a magnesium salt or a calcium salt; and ammonium salts such as an ammonium salt, an alkylammonium salt, a dialkylammonium salt, a trialkylammonium salt, or a tetraalkylammonium salt.
The “prodrug” of the present invention means a derivative of the compound represented by the formula (1), which is enzymatically or nonenzymatically converted to the compound represented by the formula (1) or a pharmaceutically acceptable salt thereof under physiological conditions. When such a prodrug is administered to a patient, it may be inactive. However, such a prodrug is converted to the compound of the formula (1) and exists in the form of the compound of the formula (1) in vivo.
The compound represented by the formula (1) of the present invention may include compounds represented by the following formula, wherein X is a substitutable phenyl group:




Specific examples of the present invention include the compound shown in the following Table 1, for example. However, such examples are not intended to limit the present invention. It is to be noted that compound names corresponding to the numbers shown in the table are also described.
In the following table, the symbol “Me” represents a methyl group, “Et” represents an ethyl group, “t-Bu” represents a t-butyl group, and “*” represents a binding portion.















TABLE 1





Compound










No.
R1a
R2a
R3a
R4a
R5a
Y1
Y2
Example







 1
CF3
H
H
H
H
H
Cl
Example










1










Step B


 2
H
H
H
H
H
H
Cl
Example










2


 3
OCF3
H
H
H
H
H
Cl
Example










3


 


 4
CF3
H
H
H
H
H




Example 4


 


 5
H
H
H
H
H
H




Example 5


 


 6
OCF3
H
H
H
H
H




Example 6


 


 7
CF3
H
H
H
H
H




Example 7


 


 8
H
H
H
H
H
H




Example 8


 


 9
OCF3
H
H
H
H
H




Example 9


 


10
CF3
H
H
H
H
H




Example 10


 


11
H
H
H
H
H
H




Example 11


 


12
OCF3
H
H
H
H
H




Example 12


 


13
H
H
H
H
H
H




Example 13


 


14
H
H
H
H
H
H




Example 14


 


15
H
H
H
H
H
H




Example 15


 


16
OCF3
H
H
H
H
H




Example 16


 


17
H
H
H
H
H
H




Example 17


 


18
OCF3
H
H
H
H
H




Example 18


 


19
CF3
H
H
H
H
H




Example 19


 


20
CF3
H
H
H
H
H




Example 20


 


21
H
H
H
H
H
H




Example 21


 


22
OCF3
H
H
H
H
H




Example 22


 


23
CF3
H
H
H
H
H




Example 23


 


24
H
H
H
H
H
H




Example 24


 


25
OCF3
H
H
H
H
H




Example 25


 


26
CF3
H
H
H
H
H




Example 26


 


27
H
H
H
H
H
H




Example 27


 


28
OCF3
H
H
H
H
H




Example 28


 


29
CF3
H
H
H
H
H




Example 29


 


30
H
H
H
H
H
H




Example 30


 


31
OCF3
H
H
H
H
H




Example 31


 


32
CF3
H
H
H
H
H




Example 32


 


33
H
H
H
H
H
H




Example 33


 


34
OCF3
H
H
H
H
H




Example 34


 


35
CF3
H
H
H
H
H




Example 35


 


36
H
H
H
H
H
H




Example 36


 


37
OCF3
H
H
H
H
H




Example 37


 


38
CF3
H
H
H
H
H
NH2
Example










38


39
H
H
H
H
H
H
NH2
Example










39


40
OCF3
H
H
H
H
H
NH2
Example










40


 


41A
CF3
H
H
H
H
H




Example 41


 


41B
CF3
H
H
H
H
H




Example 41


 


42A
H
H
H
H
H
H




Example 42


 


42B
H
H
H
H
H
H




Example 42


 


43A
OCF3
H
H
H
H
H




Example 43


 


43B
OCF3
H
H
H
H
H




Example 43


 


44A
H
H
H
H
H
H




Example 44


 


44B
H
H
H
H
H
H




Example 44


 


45
H
H
H
H
H
H




Example 45


 


46
H
H
H
H
H
H




Example 46


 


47
CF3
H
H
H
H
H




Example 47


 


48
H
H
H
H
H
H




Example 48


 


49
OCF3
H
H
H
H
H




Example 49


 


50
H
H
H
H
H
H




Example 50


 


51
H
H
H
H
H
H




Example 51


 


52
OCF3
H
H
H
H
H




Example 52


 


53
OCF3
H
H
H
H
H




Example 53


 


54
H
H
H
H
H
H




Example 54


 


55
H
H
H
H
H
H




Example 55


 


56
H
H
H
H
H
H




Example 56


 


57
H
H
H
H
H
H




Example 57


 


58
H
H
H
H
H
H




Example 58


 


59
H
H
H
H
H
H




Example 59


 


60
H
H
H
H
H
H




Example 60


 


61
CF3
H
H
H
H
H




Example 61


 


62
H
H
H
H
H
H




Example 62


 


63
H
H
H
H
H
H




Example 63


 


64
H
H
H
H
H
H




Example 64


 


65
H
H
H
H
H
H




Example 65


 


66
H
H
H
H
H
H




Example 66


 


67
H
H
H
H
H
H




Example 67


 


68
H
H
H
H
H




H
Example 68 Step C









Compound names corresponding to the aforementioned compound Nos. are described below.

    (1): 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (2): 7-chloro-3-phenyl-2H-isoquinolin-1-one,
    (3): 7-chloro-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (4): 7-pyrrolidin-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (5): 3-phenyl-7-pyrrolidin-1-yl-2H-isoquinolin-1-one,
    (6): 7-pyrrolidin-1-yl-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (7): 7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (8): 7-morpholin-4-yl-3-phenyl-2H-isoquinolin-1-one,
    (9): 7-morpholin-4-yl-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (10): 7-piperidin-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (11): 3-phenyl-7-piperidin-1-yl-2H-isoquinolin-1-one,
    (12): 7-piperidin-1-yl-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (13): 7-(4-methylpiperazin-1-yl)-3-phenyl-2H-isoquinolin-1-one,
    (14): 7-(benzylmethylamino)-3-phenyl-2H-isoquinolin-1-one,
    (15): 7-(2-morpholin-4-ylethylamino)-3-phenyl-2H-isoquinolin-1-one,
    (16): 7-(2-morpholin-4-ylethylamino)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (17): 7-[methyl(2-morpholin-4-ylethyl)amino]-3-phenyl-2H-isoquinolin-1-one,
    (18): 7-[methyl(2-morpholin-4-ylethyl)amino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (19): 7-[methyl(2-morpholin-4-ylethyl)amino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (20): 7-(4-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (21): 7-(4-hydroxymethylpiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one,
    (22): 7-(4-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (23): 7-(3-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (24): 7-(3-hydroxymethylpiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one,
    (25): 7-(3-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (26): 7-(2-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (27): 7-(2-hydroxymethylpiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one,
    (28): 7-(2-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (29): 7-(4-hydroxypiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (30): 7-(4-hydroxypiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one,
    (31): 7-(4-hydroxypiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (32): 7-(3-hydroxypiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (33): 7-(3-hydroxypiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one,
    (34): 7-(3-hydroxypiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (35): 7-(3-hydroxypyrrolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (36): 7-(3-hydroxypyrrolidin-1-yl)-3-phenyl-2H-isoquinolin-1-one,
    (37): 7-(3-hydroxypyrrolidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (38): 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (39): 7-amino-3-phenyl-2H-isoquinolin-1-one,
    (40): 7-amino-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (41A): 7-(2-hydroxyethylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (41B): 7-[bis(2-hydroxyethyl)amino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (42A): 7-(2-hydroxyethyl)amino-3-phenyl-2H-isoquinolin-1-one monotrifluoroacetate,
    (42B): 7-[bis(2-hydroxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one,
    (43A): 7-(2-hydroxyethylamino)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (43B): 7-[bis(2-hydroxyethyl)amino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (44A): 7-(2-methoxyethylamino)-3-phenyl-2H-isoquinolin-1-one,
    (44B): 7-[bis(2-methoxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one,
    (45): 7-(2,3-dihydroxypropylamino)-3-phenyl-2H-isoquinolin-1-one,
    (46): 7-[(2,3-dihydroxypropyl)(2-hydroxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one,
    (47): 7-[(2-hydroxyethyl)methylamino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (48): 7-[(2-hydroxyethyl)methylamino]-3-phenyl-2H-isoquinolin-1-one,
    (49): 7-[(2-hydroxyethyl)methylamino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one,
    (50): 7-[(2,3-dihydroxypropyl)methylamino]-3-phenyl-2H-isoquinolin-1-one,
    (51): 7-[methyl((2S,3R)-2,3,4-trihydroxybutyl)amino]-3-phenyl-2H-isoquinolin-1-one,
    (52): t-butyl(2-{methyl[1-oxo-3-(2-trifluoromethoxyphenyl)-1,2-dihydroisoquinolin-7-yl]amino}ethyl)carbamate,
    (53): 7-[(2-aminoethyl)methylamino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one ditrifluoroacetate,
    (54): 7-(2-aminoethylamino)-3-phenyl-2H-isoquinolin-1-one ditrifluoroacetate,
    (55): 7-[(2-dimethylaminoethyl)methylamino]-3-phenyl-2H-isoquinolin-1-one,
    (56): 7-[(2-aminoethyl)methylamino]-3-phenyl-2H-isoquinolin-1-one monotrifluoroacetate,
    (57): 2-chloro-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide,
    (58): 2-methoxy-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide,
    (59): N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)-2-phenoxyacetamide,
    (60): 2-benzyloxy-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide,
    (61): ethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (62): ethyl(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)carbamate,
    (63): t-butyl[(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-ylcarbamoyl)methyl]carbamate,
    (64): 2-amino-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide monotrifluoroacetate,
    (65): 2-morpholin-4-yl-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide,
    (66): 2-dimethylamino-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide,
    (67): 2-(4-methylpiperazin-1-yl)-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide, and
    (68): 6-morpholin-4-yl-3-phenyl-2H-isoquinolin-1-one.


Specific examples of the present invention further include the compound represented by the following formula and the compounds shown in Table 2:




However, such examples are not intended to limit the present invention.
These compounds can be synthesized by reaction process 2. It is to be noted that compound names corresponding to the numbers shown in the table are also described. In addition, in the following table, the symbol “Me” represents a methyl group, and “*” represents a binding portion.















TABLE 2





Compound










No.
R1a
R2a
R3a
R4a
R5a
Y1
Y2
Example







69
CF3
H
H
H
H
H




Example 69


 


70
CF3
H
H
H
H
H




Example 70


 


71
CF3
H
H
H
H
H




Example 71


 


72
CF3
H
H
H
H
H




Example 72


 


73
CF3
H
H
H
H
H




Example 73


 


74
CF3
H
H
H
H
H




Example 74


 


75
CF3
H
H
H
H
H




Example 75


 














76




H
H
H
H




Example 76


 















77
CF3
H
H
H
H
H




Example 77


 


78
CF3
H
H
H
H
H




Example 78


 


79
CF3
H
H
H
H
H




Example 79









Compound names corresponding to the aforementioned compound Nos. are described below.

    (69): (4aS,8aR)-3′-(2-trifluoromethylphenyl)-3,4,4a,5,6,7,8,8a-octahydro-1H, 2′H-[2,7′]biisoquinolinyl-1′-one,
    (70): 7-((2S,6R)-2,6-dimethylmorpholin-4-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (71): 7-((S)-2-hydroxymethylpyrrolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (72): 7-((R)-2-hydroxymethylpyrrolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (73): 7-azetidin-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (74): 4a-hydroxy-3′-(2-trifluoromethylphenyl)-3,4,4a,5,6,7,8,8a-octahydro-1H, 2′H-[2,7′]biisoquinolinyl-1′-one,
    (75): methyl 1-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]piperidine-4-carboxylate,
    (76): 7-(4-hydroxypiperidin-1-yl)-3-naphthalen-1-yl-2H-isoquinolin-1-one,
    (77): 7-(1,4-dioxa-8-azaspiro[4.5]deca-8-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (78): 7-(2-hydroxymethylmorpholin-4-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one, and
    (79): 7-(4-hydroxy-4-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one.


Moreover, specific examples of the present invention further include the compound represented by the following formula and the compounds shown in Table 3:




However, such examples are not intended to limit the present invention.
These compounds can be synthesized by reaction process 1. It is to be noted that compound names corresponding to the numbers shown in the table are also described. In addition, in the following table, the symbol “Me” represents a methyl group, “Et” represents an ethyl group, and “*” represents a binding portion.















TABLE 3





Compound










No.
R1a
R2a
R3a
R4a
R5a
Y1
Y2
Example







80
H
H
OMe
H
H
H




Example 80


 


81
OMe
H
H
H
H
H




Example 81


 


82
Et
H
H
H
H
H




Example 82


 


83
SMe
H
H
H
H
H




Example 83


 


84
Br
H
H
H
H
H




Example 84


 


85




H
H
H
H
H




Example 85


 


86




H
H
H
H
H




Example 86


 


87
Cl
H
H
H
Me
H







 


88
H
OMe
H
OMe
H
H




Example 88


 


89
H
OMe
OMe
OMe
H
H




Example 89









Compound names corresponding to the aforementioned compound Nos. are described below.

    (80): 3-(4-methoxyphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one,
    (81): 3-(2-methoxyphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one,
    (82): 3-(2-ethylphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one,
    (83): 3-(2-methylsulfanylphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one,
    (84): 3-(2-bromophenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one,
    (85): 7-morpholin-4-yl-3-(2-piperidin-1-ylphenyl)-2H-isoquinolin-1-one,
    (86): 7-morpholin-4-yl-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one,
    (87): 3-(2-chloro-6-methylphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one,
    (88): 3-(3,5-dimethoxyphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one, and
    (89): 7-morpholin-4-yl-3-(3,4,5-trimethoxyphenyl)-2H-isoquinolin-1-one.


Furthermore, specific examples of the present invention further include the compounds represented by the following formulas and the compounds shown in Table 4:




However, such examples are not intended to limit the present invention.
These compounds can be synthesized by reaction processes 1-7. It is to be noted that compound names corresponding to the numbers shown in the table are also described. In addition, in the following table, the symbol “Me” represents a methyl group, and “*” represents a binding portion.















TABLE 4





Compound










No.
R1a
R2a
R3a
R4a
R5a
Y
Ar
Example























90
Me
H
Ome
H
H




—
Example 90


 


91




H
H
H
H




—
Example 91


 


92
Me
H
H
H
H




—
Example 92


 


93
—
—
—
—
—








Example 93


 


94




H
H
H
H




—
Example 94


 


95




H
H
H
H




—
Example 95


 


96
CF3
H
F
H
H




—
Example 96


 


97




H
H
H
H




—
Example 97


 


98




H
H
H
H




—
Example 98


 


99
Et
H
H
H
H




—
Example 99


 


100




H
H
H
H




—
Example 100


 


101




H
H
H
H




—
Example 101


 


102




H
H
H
H




—
Example 102


 


103




H
H
H
H




—
Example 103


 


104
CF3
H
H
H
H




—
Example 104


 


105
CF3
H
H
H
H




—
Example 105


 


106
CF3
H
H
H
H




—
Example 106


 


107
CF3
H
H
H
H




—
Example 107


 


108
Me
H
H
H
H




—
Example 108


 


109
—
—
—
—
—








Example 109


 


110




H
H
H
H




—
Example 110


 


111




H
H
H
H




—
Example 111


 


112
CF3
H
H
H
H




—
Example 112


 


113
CF3
H
H
H
H




—
Example 113


 


114
CF3
H
H
H
H




—
Example 114


 


115
CF3
H
H
H
H




—
Example 115


 


116
CF3
H
H
H
H




—
Example 116


 


117
CF3
H
H
H
H




—
Example 117


 


118
CF3
H
H
H
H




—
Example 118


 


119
CF3
H
H
H
H




—
Example 119


 


120
CF3
H
H
H
H




—
Example 120


 


121
CF3
H
H
H
H




—
Example 121


 


122
CF3
H
H
H
H




—
Example 122


 


123
CF3
H
H
H
H




—
Example 123


 


124
CF3
H
H
H
H




—
Example 124


 


125
CF3
H
H
H
H




—
Example 125


 


126
CF3
H
H
H
H




—
Example 126


 


127
CF3
H
H
H
H




—
Example 127


 


128
CF3
H
H
H
H




—
Example 128


 


129
CF3
H
H
H
H




—
Example 129


 


130
CF3
H
H
H
H




—
Example 130


 


131
CF3
H
H
H
H




—
Example 131


 


132
CF3
H
H
H
H




—
Example 132


 


133
CF3
H
H
H
H




—
Example 133


 


134
CF3
H
H
H
H




—
Example 134


 


135
CF3
H
H
H
H




—
Example 135


 


136
CF3
H
H
H
H




—
Example 136


 


137
CF3
H
H
H
H




—
Example 137


 


138
CF3
H
H
H
H




—
Example 138


 


139
CF3
H
H
H
H




—
Example 139


 


140




H
H
H
H




—
Example 140


 


141
CF3
H
F
H
H




—
Example 141


 


142
OCF3
H
H
H
H




—
Example 142


 


143
CF3
H
H
H
H




—
Example 143


 


144
CF3
H
H
H
H




—
Example 144


 


145
Me
H
OH
H
H




—
Example 145


 


146
Cl
H
H
H
H




—
Example 146


 


147
H
H
H
H
H




—
Example 147


 


148
H
H
H
H
H




—
Example 148


 


149
CF3
H
H
H
H




—
Example 149


 


150
CF3
H
H
H
H




—
Example 150


 


151
CF3
H
H
H
H




—
Example 151


 


152
CF3
H
H
H
H




—
Example 152


 


153
CF3
H
H
H
H




—
Example 153


 


154
CF3
H
H
H
H




—
Example 154


 


155
CF3
H
H
H
H




—
Example 155


 


156
H
H
H
H
H




—
Example 156


 


162
—
—
—
—
—








Example 162


 


163
—
—
—
—
—








Example 163


 


164
CF3
H
H
H
H




—
Example 87









Compound names corresponding to the aforementioned compound Nos. are described below.

    (90): 7-(3-hydroxypiperidin-1-yl)-3-(4-methoxy-2-methylphenyl)-2H-isoquinolin-1-one,
    (91): 7-(3-hydroxypiperidin-1-yl)-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one,
    (92): 7-(3-hydroxypiperidin-1-yl)-3-o-tolyl-2H-isoquinolin-1-one,
    (93): 7-(3-hydroxypiperidin-1-yl)-3-(6-methoxybenzothiazol-2-yl)-2H-isoquinolin-1-one,
    (94): 7-(3-hydroxypiperidin-1-yl)-3-(2-morpholin-4-ylmethylphenyl)-2H-isoquinolin-1-one,
    (95): 7-(4-hydroxypiperidin-1-yl)-3-[2-(methylphenylamino)phenyl]-2H-isoquinolin-1-one,
    (96): 3-(4-fluoro-2-trifluoromethylphenyl)-7-(4-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one,
    (97): 7-(4-hydroxypiperidin-1-yl)-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one,
    (98): 3-biphenyl-2-yl-7-(3-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one,
    (99): 3-(2-ethylphenyl)-7-(3-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one,
    (100): 7-(4-hydroxypiperidin-1-yl)-3-[2-(2-methoxyethoxy)phenyl]-2H-isoquinolin-1-one,
    (101): t-butyl 4-{2-[7-(3-hydroxypiperidin-1-yl)-1-oxo-1,2-dihydroisoquinolin-3-yl]phenyl}piperazine-1-carboxylate,
    (102): 7-(3-hydroxypiperidin-1-yl)-3-(2-piperazin-1-ylphenyl)-2H-isoquinolin-1-one,
    (103): 7-(3-hydroxypiperidin-1-yl)-3-[2-(4-methylpiperazin-1-yl)phenyl]-2H-isoquinolin-1-one,
    (104): 7-thiomorpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (105): 7-(1-oxothiomorpholin-4-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (106): 7-((R)-3-hydroxypiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (107): 7-((S)-3-hydroxypiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (108): 7-morpholin-4-yl-3-o-tolyl-2H-isoquinolin-1-one,
    (109): 7-morpholin-4-yl-3-naphthalen-2-yl-2H-isoquinolin-1-one,
    (110): 3-(2-dimethylaminophenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one,
    (111): 7-morpholin-4-yl-3-(2-pyrrolidin-1-ylphenyl)-2H-isoquinolin-1-one,
    (112): 7-((S)-2,3-dihydroxypropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (113): 7-((R)-2,3-dihydroxypropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (114): 7-imidazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (115): 7-[1,2,4]triazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (116): 7-tetrazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (117): 7-((R)-3-benzyloxy-2-methylaminopropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (118): 7-((R)-4-benzyloxymethyl-3-methylimidazolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (119): 7-methylamino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (120): propyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (121): isopropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (122): isobutyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (123): pentyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (124): benzyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (125): allyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (126): but-2-ynyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (127): 2-(2-methoxyethoxy)ethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (128): 3-methoxy-2,2-dimethylpropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (129): 2-methoxyethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (130): 2-benzyloxyethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (131): 2-hydroxyethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (132): (R)-2,3-bisbenzyloxypropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (133): 2-benzyloxy-1-benzyloxymethylethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (134): cyclohexylmethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (135): cyclohexyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (136): furan-3-ylmethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (137): S-ethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]thiocarbamate,
    (138): (R)-2,3-dihydroxypropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (139): 2-hydroxy-1-hydroxymethylethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (140): ethyl[3-(2-morpholin-4-ylphenyl)-1-oxo-1,2-dihydroisoquinolin-7-yl]carbamate,
    (141): ethyl[3-(4-fluoro-2-trifluoromethylphenyl)-1-oxo-1,2-dihydroisoquinolin-7-yl]carbamate,
    (142): ethyl[1-oxo-3-(2-trifluoromethoxyphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (143): ethyl methyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (144): 2-hydroxyethyl methyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate,
    (145): 3-(4-hydroxy-2-methylphenyl)-7-(3-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one,
    (146): 3-(2-chlorophenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one,
    (147): 2-hydroxy-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide,
    (148): 3-phenyl-7-((2S,3R)-2,3,4-trihydroxybutylamino)-2H-isoquinolin-1-one,
    (149): 7-(2,2-dimethylhydrazino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (150): 3-(2-trifluoromethylphenyl)-7-(1,2,2-trimethylhydrazino)-2H-isoquinolin-1-one,
    (151): 7-(N-benzhydrylidenehydrazino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (152): 1-methyl-3-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]urea,
    (153): N-methyl-N-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]formamide,
    (154): N-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]benzamide,
    (155): N-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]-2-thiophen-2-ylacetamide,
    (156): N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide,
    (162): 3-furan-2-yl-7-morpholin-4-yl-2H-isoquinoline-1-one,
    (163): 7-morpholin-4-yl-3-pyridin-4-ylisoquinolin-1-one ditrifluoroacetate, and
    (164): methyl 2-hydroxy-3-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-ylamino]propionate.


Still further, specific examples of the compound of the present invention include the compound represented by the following formula and the compounds shown in Table 5:




However, such examples are not intended to limit the present invention.












TABLE 5







Compound






No.
R1
R2
Example









157
Cl
H
Example 157



158
H
Cl
Example 158



159
Cl
Cl
Example 159



160
F
H
Example 160



161
H
F
Example 161










Compound names corresponding to the aforementioned compound Nos. are described below.

    (157): 6-chloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (158): 8-chloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (159): 6,8-dichloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one,
    (160): 6-fluoro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one, and
    (161): 8-fluoro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one.


Next, a method for producing the compound of the present invention will be described. Further, when the defined groups undergo an undesirable chemical conversion under the conditions for carrying out the method in the preparation method as shown below, for example, by using means to protect and deprotect the functional groups, the preparation can be performed. Herein, as the selection of a protective group and the operation of deprotection, for example, the method as described in Greene and Wuts, “Protective Groups in Organic Synthesis” (Second Edition, John Wiley & Sons, 1991)” can be mentioned, and this may be suitably used in accordance with reaction conditions. Further, if necessary or required, the order of the reaction step for introducing a substituent and the like may be changed. As the method for preparing the compound represented by formula (1), various methods can be thought and the compound can be synthesized by using the conventional organic synthesis means and, for example, the compound can be prepared by the following method as a representative method.
Representative Production Methods
Production Method 1
The compound represented by formula (1) of the present invention can be produced by the following method, for example. However, the method for producing the compound of the present invention is not limited thereto. The compounds of the present invention are all novel compounds, which have not been described in any publications. The compounds can be produced by known chemical techniques. As a raw material compound used in production, a commercially available compound can be used. Otherwise, such a compound can also be produced by common methods, as necessary. In the following reaction processes 1 to 4 and the relevant descriptions, X and Y represent Y2 and Y3, and Y1, Y2, Y3 and Y4 have the same definitions as those described in the above formula (1). Moreover, codes used in the following reaction formulas have common means, which can be understood by persons skilled in the art in the present technical field. Furthermore, L represents a chlorine atom or a bromine atom, G represents hydrogen or a C1-4 alkyl group such as a methyl group, and T represents a C1-6 alkyl group.
1. General Synthesis Methods of Compound (1a) Represented by Formula (1) (Wherein Y1 and Y4 Represent Hydrogen Atoms)
Reaction Process 1




The 2-methylbenzamide derivative II can be easily obtained by applying a common amidation method to the known 2-methylbenzoic acid derivative I. The compound represented by formula III can be produced by isolating and purifying the obtained 2-methylbenzamide derivative II, and then by applying to the resultant derivative a known method (aromatic amination reaction: Wolfe, J. P., J. Org. Chem., 65, 1158-1174 (2000), Harris, M. C., Org. Lett., 4, 2885-2888 (2002), Huang, X., Org. Lett., 3, 3417-3419 (2001)). That is to say, the compound represented by formula III can be produced by allowing the 2-methylbenzamide derivative II to react with a commercially available reagent or a suitable amine prepared by a known method at a suitable temperature (between a room temperature and the boiling point of a solvent) in the presence of a suitable solvent (toluene, THF, 1,4-dioxane, xylene, dimethoxyethane, etc.), a suitable palladium catalyst (for example, Pd(OAc)2, Pd2dba3, PdCl2[P(o-tol)3]2, Pd(O2CCF3)2, etc.), a ligand (for example, P(o-tol)3, BINAP, DPPF, P(t-Bu)3, 2-dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl, 2-(di-t-butylphosphino)biphenyl, 2-(dicyclohexylphosphino)biphenyl, 2′,6′-dimethoxy-2-(dicyclohexylphosphino)biphenyl, 2′,4′,6′-triisopropyl-2-(dicyclohexylphosphino)biphenyl-1,3-diallyldihydroimidazolium salt, etc.), and a base (for example, t-BuONa, LiHMDS, Cs2CO3, K3PO4, etc.). From the obtained compound represented by the formula III, the compound represented by formula (1a) can be produced by applying known methods (U.S. Pat. No. 4,942,163; Won-Jea Cho, et al., Arch. Pharm. Res., 20, 264-268 (1997); Bioorg. Med. Chem. Lett. 8, 41-46 (1998); Arch. Pharm. Res., 24, 276-280 (2001); Bioorg. Med. Chem. 10, 2953-2961 (2002)). That is, the compound represented by formula (1a) can be obtained by subjecting the compound represented by formula III to lithiation with a suitable base (for example, LDA, t-BuLi, s-BuLi, or BuLi) in a suitable solvent (for example, THF or Et2O) at a suitable temperature (for example, between −78° C. and the boiling point of the solvent), and then allowing the resultant to react with a commercially available reagent, or with an aromatic or hetero aromatic nitrile derivative, which has been prepared by a known method, at a suitable temperature (for example, between −78° C. and the boiling point of the solvent).
2. General Synthesis Method of Compound (1b) Represented by Formula (1) (Wherein Y1 and Y4 Represent Hydrogen Atoms)
Reaction Process 2




The known methods (U.S. Pat. No. 4,942,163; Won-Jea Cho, et al., Arch. Pharm. Res., 20, 264-268 (1997); Bioorg. Med. Chem. Lett. 8, 41-46 (1998); Arch. Pharm. Res., 24, 276-280 (2001); Bioorg. Med. Chem. 10, 2953-2961 (2002)) are applied to the 2-methylbenzamide derivative II obtained in reaction process 1, so as to obtain the compound represented by formula (IV). In addition, the known methods (aromatic amination reaction: Wolfe, J. P., J. Org. Chem., 65, 1158-1174 (2000); Harris, M. C., Org. Lett., 4, 2885-2888 (2002); Huang, X., Org. Lett., 3, 3417-3419 (2001)) are applied to the compound represented by formula (IV), as in reaction process 1, so as to obtain the compound represented by formula (1b).
3. General Synthesis Method of Compound (1d) Represented by Formula (1) (Wherein Y1 and Y4 Represent Hydrogen Atoms)
Reaction Process 3




The compound represented by formula (1c) can be produced from the compound represented by formula (IV) used in reaction process 2 by known methods (aromatic amination reaction: Wolfe, J. P., J. Org. Chem., 65, 1158-1174 (2000); Harris, M. C., Org. Lett., 4, 2885-2888 (2002); Huang, X., Org. Lett., 3, 3417-3419 (2001)), as in reaction process 2. The compound represented by formula (1d) can be produced from the obtained compound represented by formula (1c) by a known method (for example, a reductive amination reaction).
4. General Synthesis Method of Compound (1e) Represented by Formula (1) (Wherein Y1 and Y4 Represent Hydrogen Atoms)
Reaction Process 4




The compound represented by formula (1e) can be produced by subjecting the compound represented by formula (1c) used in reaction process 3 to a common acylation reaction. That is to say, the above compound can be produced by allowing the compound represented by formula (1c) to react with a suitable solvent (toluene, tetrahydrofuran, 1,4-dioxane, xylene dimethoxyethane, diethyl ether, methylene chloride, pyridine, N,N-dimethylformamide, dimethyl sulfoxide, etc.) and a suitable base (for example, triethylamine, pyridine, etc.) in the presence of an acid anhydride or acid halide at a suitable temperature (between −78° C. and the boiling point of the solvent).
5. General Synthesis Method of Compound (1f) Represented by Formula (1) (Wherein Y1 and Y4 Represent Hydrogen Atoms)
Reaction Process 5




The compound represented by formula (V) can be produced by subjecting the compound represented by formula (IV) to a known method (aromatic amination: Fukuyama, T., Org. Lett., 15, 4987-4990 (2003)). Thus, the compound represented by formula (V) can be produced by allowing the compound represented by formula (IV) to react with a commercially available reagent or a suitable amino compound prepared by a known method in the presence of a suitable solvent (N,N-dimethylformamide, dimethyl sulfoxide, etc.) and a suitable copper catalyst (metal copper (powders), copper (I) chloride, copper (I) oxide, copper (II) oxide, copper (II) chloride, copper (II) sulfate, copper (II) acetate, copper (II) acetoacetate, copper (I) iodide, copper (I) trifluoromethanesulfonate, etc.), and a base (cesium acetate, potassium phosphate, potassium carbonate, cesium carbonate, sodium t-butoxide, potassium hexamethyldisilazane, sodium hexamethyldisilazane, phosphazene, etc.), at a suitable temperature (between a room temperature and the boiling point of the solvent). The compound represented by formula (1f) can be produced from the obtained compound represented by formula (V) by the same method as those in reaction processes 3-4.
6. General Synthesis Method of Compound (1g) Represented by Formula (1) (Wherein Y1 and Y4 Represent Hydrogen Atoms)
Reaction Process 6




The compound represented by formula (VI) can be easily obtained by subjecting the compound represented by formula (1c) used in reaction process 3 to a halogenation reaction such as Sandmeyer reaction. The compound represented by formula (1g) can be produced by subjecting the compound represented by formula (VI) to a known method (copper catalyst heteroarylation reaction and amidation reaction: Buchwald, S. L., J. Am. Chem. Soc., 123, 7727-7729 (2001), Buchwald, S. L., J. Am. Chem. Soc., 124, 7421-7428 (2002)). Thus, the compound represented by formula (1g) can be produced by allowing the compound represented by formula (VI) to react with a commercially available reagent or a suitable heteroaromatic compound or amide compound prepared by a known method in the presence of a suitable solvent (dioxane, tetrahydrofuran, diethyl ether, toluene, etc.), a suitable copper catalyst (metal copper (powders), copper (I) chloride, copper (I) oxide, copper (II) oxide, copper (II) chloride, copper (II) sulfate, copper (II) acetate, copper (II) acetoacetate, copper (I) iodide, copper (I) trifluoromethanesulfonate, etc.), a ligand (1,2-cyclohexanediamine, N,N′-dimethylethylenediamine, N,N′-dimethyl-1,2-cyclohexanediamine, 1,10-phenanthroline, etc.), and a base (potassium phosphate, potassium carbonate, cesium carbonate, sodium t-butoxide, potassium hexamethyldisilazane, sodium hexamethyldisilazane, phosphazene, etc.), at a suitable temperature (between a room temperature and the boiling point of the solvent).
7. General Synthesis Method of Compound (1j) Represented by Formula (1) (Wherein Y1 and Y4 Independently Represent a Hydrogen Atom or a Halogen Atom)
Reaction Process 7




The compound represented by formula (VII) can be produced by subjecting the 2-methylbenzamide derivative III obtained in reaction process 1 to a known method (halogenation; J. Org. Chem., 63(10), 3379-3385 (1998), Heterocycles, 29(4), 649-651 (1989)). Thus, the compound represented by formula (VII) can be produced by allowing the 2-methylbenzamide derivative III to react with a halogenation reagent (N,N′-difluoro-2,2′-bipyridium bis(tetrafluoroborate), N-chlorosuccinimide, etc.) in a suitable solvent (acetonitrile, methylene chloride, etc.) at a suitable temperature (between −78° C. and the boiling point of the solvent). The compound represented by formula (1j) can be produced by subjecting the obtained compound represented by formula (VII) to the known methods used in reaction process 1 (U.S. Pat. No. 4,942,163; Won-Jea Cho, et al., Arch. Pharm. Res., 20, 264-268 (1997); Bioorg. Med. Chem. Lett. 8, 41-46 (1998); Arch Pharm. Res., 24, 276-280 (2001); Bioorg. Med. Chem. 10, 2953-2961 (2002)). In addition, it is considered that the above compound can also be produced by subjecting the compound represented by formula (1h) or (1i) synthesized in reaction processes 1 to 4 to a known method (halogenation: J. Org. Chem., 63(10), 3379-3385 (1998), Heterocycles, 29(4), 649-651 (1989)).
Synthesis of Raw Material Compounds
Several raw material compounds for the compound of the present invention are novel compounds. Such novel compounds can be easily synthesized in the same manner as for known raw material compounds, or by applying methods known to persons skilled in the art.
Examples of a method for producing the compound represented by formula (1) of the present invention have been given above. Isolation and purification of the compounds of interest shown in the aforementioned reaction processes can be carried out by applying common chemical operations such as extraction, concentration, distillation, crystallization, filtration, recrystallization, or various types of chromatography.
The compound of the present invention and a pharmaceutically acceptable salt thereof include all stereoisomers of the compound represented by formula (1) (for example, an enantiomer and a diastereomer (including cis- and trans-geometric isomers)), racemate of the aforementioned isomers, and other mixtures.
In addition, the compound of the present invention and a pharmaceutically acceptable salt thereof can be present in several tautomeric forms, such as enol and imine forms, keto and enamine forms, and mixtures thereof. Such tautomeric isomers are present in a solution in the form of a mixture of tautomeric sets. In a solid form, either one tautomeric isomer is generally dominant. There are cases where only either one tautomeric isomer is described, but the present invention includes all tautomeric isomers of the compound of the present invention.
When the compound of the present invention is obtained as a free form, it can be converted into a salt, which the above compound may form, a hydrate thereof, or a solvate thereof, according to a common method.
In addition, when the compound of the present invention is obtained in the form of such a salt, hydrate, or solvate of the above compound, they can be converted to a free form of the compound according to a common method.
The compound of the present invention or a pharmaceutically acceptable salt thereof has excellent antitumor action. It is excellent in terms of stability in vivo and solubility in water, and is useful as a preventive or therapeutic agent (particularly as a therapeutic agent) used for proliferative diseases. Moreover, the compound of the present invention or a pharmaceutically acceptable salt is useful as a preventive or therapeutic agent (particularly as a therapeutic agent) used for proliferative diseases including various types of cancers such as breast cancer, colon cancer, ovarian cancer, lung cancer, pancreatic cancer, liver cancer, uterine cancer, brain tumor, prostatic cancer, acute leukemia, and stomach cancer.
The aforementioned methods include a step of administering to patients, who need such treatment or who suffer from the aforementioned diseases or symptoms, a pharmaceutical composition comprising the compound disclosed in the present invention or a pharmaceutically acceptable salt thereof, at a pharmaceutically effective dosage.
When the pharmaceutical composition of the present invention is used as a therapeutic or preventive agent for proliferative diseases such as cancer, examples of an administration method may include oral, intrarectal, parenteral (intravenous, intramuscular, or subcutaneous), intracisternal, intravaginal, intraperitoneal, intravesical, and local (administration of drop, powders, ointment, gel or cream) administrations, and inhalation (intraoral or nasal spray). Examples of such an administration form may include a tablet, a capsule, a granule, a powder, a pill, an aqueous or nonaqueous oral solution or suspension, and a parenteral solution, which is filled in a container suitable for dividing the solution into individual dosages. In addition, such an administration form can also be adapted to various administration methods including controlled released preparations such as those used in subcutaneous transplantation.
The aforementioned pharmaceutical can be produced according to known methods using additives such as an excipient, a lubricant (coating agent), a binder, a disintegrator, a stabilizer, a flavoring agent, or a diluent.
Examples of an excipient may include starches such as starch, potato starch, or corn starch, lactose, crystalline cellulose, and calcium hydrogen phosphate.
Examples of a coating agent may include ethyl cellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, shellac, talc, carnauba wax, and paraffin.
Examples of a binder may include polyvinylpyrrolidone, macrogol, and the same compounds as those described in the above excipient.
Examples of a disintegrator may include the same compounds as those described in the above excipient, and chemically modified starches and celluloses, such as croscarmellose sodium, carboxymethyl starch sodium, or crosslinked polyvinylpyrrolidone.
Examples of a stabilizer may include: p-hydroxybenzoic esters such as methylparaben or propylparaben; alcohols such as chlorobutanol, benzyl alcohol, or phenylethyl alcohol; benzalkonium chloride; phenols such as phenol or cresol; thimerosal; dehydroacetic acid; and sorbic acid.
Examples of a flavoring agent may include commonly used sweeteners, acidulants, and aromatics.
Examples of a solvent used in production of a liquid agent may include ethanol, phenol, chlorocresol, purified water, and distilled water.
Examples of a surfactant or emulsifier may include polysorbate 80, polyoxyl 40 stearate, and lauromacrogol.
When the pharmaceutical composition of the present invention is used as a therapeutic or preventive agent for proliferative diseases, the amount used of the compound of the present invention or a pharmaceutically acceptable salt thereof is different depending on symptom, age, body weight, relative physical conditions, the use of other agents, an administration method, etc. For example, for a patient (a hematherm, and particularly a human), in the case of administering an active ingredient (the compound represented by formula (1) of the present invention) as an oral agent, an effective amount is generally preferably 0.01 and 1,000 mg, and more preferably between 0.1 and 300 mg per kg of body weight per day. The dose per day for an adult patient with a normal body weight is preferably between 1 and 5,000 mg. In the case of a parenteral agent, such an effective amount is preferably between 0.01 and 1,000 mg, and more preferably between 1 and 5,000 mg per kg of body weight per day. It is desired that such an amount of pharmaceutical composition be administered depending on symptoms.
EXAMPLES
The present invention will be more specifically described in the following examples. However, these examples are not intended to limit the scope of the present invention. It is to be noted that NMR analysis was carried out using JNM-EX270 (270 MHz), JNMGSX400 (400 MHz) or JNM-A500 (500 MHz), which are manufactured by JEOL. NMR data was indicated with ppm (parts per million). The deuterium lock signal from a sample solvent was referred. Mass spectrum data was obtained using JMS-DX303 or JMS-SX/SX102A manufactured by JEOL. In addition, mass spectrum data including high performance liquid chromatography was obtained, using a micromass (ZMD manufactured by Micromass) equipped with a 996-600E gradient high performance liquid chromatography manufactured by Waters, or using a micromass (ZQ manufactured by Micromass) equipped with a 2525 gradient high performance liquid chromatography manufactured by Waters. Any of the following conditions were applied for such high performance liquid chromatography.
High Performance Liquid Chromatography Condition 1
Column: Combi ODS (ODS, 5 μm, 4.6 mm I.D.×50 mm, manufactured by Wako Pure Chemical Industries, Ltd.), COSMOSIL (ODS, 5 μm, 4.6 mm I.D.×50 mm, manufactured by Nacalai Tesque, Inc.), or Inertsil C18 (ODS, 5 μm, 4.6 mm I.D.×50 mm, manufactured by GL Sciences, Inc)

Mobile phase: Water (A) that contains 0.05% trifluoroacetic acid and acetonitrile (B) that contains 0.05% trifluoroacetic acid

Elution method: A stepwise solvent gradient elution comprising eluting from 10% B to 95% B (3.5 minutes), eluting from 95% B to 10% B (1 minute), and then retaining at 10% B (0.5 minute)

Flow rate: 4.0 ml/minute

High Performance Liquid Chromatography Condition 2

Column: Combi ODS (ODS, 5 μm, 4.6 mm I.D.×50 mm, manufactured by Wako Pure Chemical Industries, Ltd.), COSMOSIL (ODS, 5 μm, 4.6 mm I.D.×50 mm, manufactured by Nacalai Tesque, Inc.), or Inertsil C18 (ODS, 5 μm, 4.6 mm I.D.×50 mm, manufactured by GL Sciences, Inc)

Mobile phase: Water (A) that contains 0.05% trifluoroacetic acid and acetonitrile (B) that contains 0.05% trifluoroacetic acid

Elution method: A stepwise solvent gradient elution comprising eluting from 30% B to 35% B (0.2 minute), eluting from 35% B to 98% B (3.3 minutes), eluting from 98% B to 30% B (1 minute), and then retaining at 30% B (0.5 minute)

Flow rate: 4.0 ml/minute

High Performance Liquid Chromatography Condition 3

Column: Combi ODS (ODS, 5 μm, 4.6 mm I.D.×50 mm, manufactured by Wako Pure Chemical Industries, Ltd.)

Mobile phase: Water (A) that contains 0.05% trifluoroacetic acid and acetonitrile (B) that contains 0.05% trifluoroacetic acid

Elution method: A stepwise solvent gradient elution comprising eluting from 10% B to 95% B (2 minutes), retaining at 95% B (1.5 minutes), eluting from 95% B to 10% B (1 minute), and retaining at 10% B (0.5 minute)

Flow rate: 4.0 ml/minute

An organic synthetic reaction was carried out using a commercially available reagent, which has not been further purified before use. The term “room temperature” is used herein to mean a temperature ranging from about 20° C. to 25° C. All antiposic reactions were carried out in a nitrogen atmosphere. Concentration under reduced pressure or solvent distillation was carried out using a rotary evaporator, unless otherwise specified.
For preparation of compounds, a functional group is protected by a protecting group as necessary, a protector of a target molecule is prepared, and the protecting group is then removed. Operations to select such a protecting group and to remove it were carried out according to the method described in Greene and Wuts, “Protective Group in Organic Synthesis,” 2nd edition, John Wiley & Sons, 1991, for example.
Example 1
7-Chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
Step A
5-Chloro-2,N-dimethylbenzamide




42.8 ml of thionyl chloride (586 mmol) was added to 25.0 g of 5-chloro-2-methylbenzoic acid (147 mmol). The mixture was stirred under heating to reflux for 1.5 hours. Thereafter, excessive thionyl chloride was distilled away under reduced pressure. The residue was dissolved in 140 ml of methylene chloride, and 34.2 ml (440 mmol) of a 40% methylamine aqueous solution was then added dropwise thereto under cooling on ice. Thereafter, the obtained mixture was stirred at 0° C. over a day and a night. Thereafter, the reaction solution was extracted with ethyl acetate, and the extract was then washed with a saturated saline solution. The resultant was then dried over anhydrous sodium sulfate, and the solvent was then distilled away under reduced pressure. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:3 to 3:2), so as to obtain 24.2 g (90%) of 5-chloro-2,N-dimethylbenzamide in the form of a colorless solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.40 (3H, s), 2.99 (3H, d, J=4.6 Hz), 5.77 (1H, brs), 7.15 (1H, d, J=8.3 Hz), 7.27 (1H, dd, J=2.3, 8.3 Hz), 7.33 (1H, d, J=2.3 Hz)
ESI (LC-MS positive mode) m/z 184 (M+H).
Step B
7-Chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




45.3 ml of a 1.8 M lithium diisopropylamide THF solution (81.6 mmol) was diluted with 68 ml of THF. Thereafter, 28 ml of a THF solution containing 5.0 g (27.2 mmol) of the 5-chloro-2,N-dimethylbenzamide prepared in Step A was added dropwise to the diluted solution at −78° C. Thereafter, 28 ml of a THF solution containing 4.65 g (27.2 mmol) of 2-trifluoromethylbenzonitrile was further added thereto, and the obtained mixture was then stirred at −78° C. for 2.5 hours. The temperature of the reaction solution was increased to a room temperature, and a saturated ammonium chloride aqueous solution was added thereto, followed by extraction with ethyl acetate. The extract was washed with a saturated saline solution, and was then dried over anhydrous sodium sulfate. Thereafter, a solid generated as a result of vacuum concentration was filtrated, so as to obtain 6.87 g (78%) of 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a colorless solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.49 (1H, s), 7.33-7.72 (5H, m), 7.81-7.84 (1H, d, J=7.26 Hz), 8.32-8.33 (1H, d, J=1.65 Hz), 9.18 (1H, brs)
ESI (LC-MS positive mode) m/z 324 (M+H).
The following compounds (Examples 2 and 3) were synthesized by a method similar to that in Step B of Example 1.
Example 2
7-Chloro-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 6.74 (1H, s), 7.26-7.56 (4H, m), 7.61-7.66 (3H, m), 8.28 (1H, d, J=2.3 Hz), 9.02 (1H, brs)
ESI (LC-MS positive mode) m/z 256 (M+H).
Example 3
7-Chloro-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 6.72 (1H, s), 7.51-7.56 (2H, m), 7.59-7.70 (2H, m), 7.78 (1H, s), 7.79 (1H, s), 8.15 (1H, s), 11.81 (1H, s)
ESI (LC-MS positive mode) m/z 340 (M+H).
Example 4
7-Pyrrolidin-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




A mixture consisting of 500 mg (1.54 mmol) of the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step B of Example 1; 45.0 mg (0.15 mmol) of 2-(di-t-butylphosphino)biphenyl; 17.0 mg (0.075 mmol) of palladium acetate; and 713 mg (7.42 mmol) of sodium t-butoxide, was suspended in 15 ml of toluene. Thereafter, 0.533 ml (6.39 mmol) of pyrrolidine was added to the above suspension, and the obtained mixture was then stirred under heating to reflux for 2 hours. Thereafter, the reaction solution was stood to cool, and water was then added thereto, followed by extraction with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and was then concentrated. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:5), so as to obtain 277.9 mg (50%) of 7-pyrrolidin-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a yellow solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.04-2.09 (4H, m), 3.40-3.45 (4H, m), 6.44 (1H, s), 7.00-7.04 (1H, dd, J=2.6, 8.6 Hz), 7.42-7.67 (5.5H, m), 7.78-7.81 (1H, d, J=7.9 Hz), 8.29 (0.5H, brs)
EI-MS m/z 358 (M+).
The following compounds (Examples 5 to 16) were synthesized by a method similar to that of Example 4, using the compound obtained in Example 1, 2, or 3, as a starting material.
Example 5
3-Phenyl-7-pyrrolidin-1-yl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 2.02-2.12 (4H, m), 3.40-3.45 (4H, m), 6.73 (1H, s), 7.02 (1H, dd, J=2.6, 8.9 Hz), 7.37-7.51 (5H, m), 7.59-7.65 (2H, m), 8.83 (1H, brs)
ESI (LC-MS positive mode) m/z 291 (M+H).
Example 6
7-Pyrrolidin-1-yl-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 2.00-2.11 (4H, m), 3.39-3.47 (4H, m), 6.64 (1H, s), 7.02 (1H, dd, J=2.6, 8.6 Hz), 7.37-7.50 (5H, m), 7.57-7.61 (1H, m), 8.60 (1H, brs)
ESI (LC-MS positive mode) m/z 375 (M+H).
Example 7
7-Morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (500 MHz, CDCl3) δ (ppm): 3.30-3.32 (4H, m), 3.89-3.91 (4H, m), 6.46 (1H, s), 7.35-7.37 (1H, dd, J=2.3, 8.7 Hz), 7.49-7.51 (1H, d, J=8.7 Hz), 7.53-7.67 (3H, m), 7.79-7.81 (2H, m), 8.54 (1H, brs)
EI-MS m/z 374 (M+).
Example 8
7-Morpholin-4-yl-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 3.31 (4H, t, J=4.8 Hz), 3.91 (4H, t, J=4.8 Hz), 6.73 (1H, s), 7.36 (1H, dd, J=2.6, 8.9 Hz), 7.41-7.64 (6H, m), 7.79 (1H, d, J=2.6 Hz), 8.84 (1H, brs)
ESI (LC-MS positive mode) m/z 307 (M+H).
Example 9
7-Morpholin-4-yl-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 3.32 (4H, m), 3.90 (4H, m), 6.65 (1H, brs), 7.35-7.65 (6H, m), 7.80 (1H, d, J=2.6 Hz), 8.60 (1H, brs)
ESI (LC-MS positive mode) m/z 391 (M+H).
Example 10
7-Piperidin-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.59-1.74 (6H, m), 3.31-3.35 (4H, m), 6.44 (1H, s), 7.36-7.65 (5H, m), 7.80-7.81 (2H, m), 8.37 (1H, brs)
EI-MS m/z 372 (M+).
Example 11
3-Phenyl-7-piperidin-1-yl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.55-1.80 (6H, m), 3.33 (4H, t, J=5.4 Hz), 6.71 (1H, s), 7.37 (1H, dd, J=2.7, 8.9 Hz), 7.40-7.55 (4H, m), 7.59-7.64 (2H, m), 7.79 (1H, d, J=2.7 Hz), 8.65 (1H, brs)
ESI (LC-MS positive mode) m/z 305 (M+H).
Example 12
7-Piperidin-1-yl-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.62-1.66 (2H, m), 1.71-1.77 (4H, m), 3.33 (4H, t, J=5.4 Hz), 6.62 (1H, s), 7.36-7.58 (5H, m), 7.59 (1H, dd, J=2.0, 7.2 Hz), 7.80 (1H, d, J=2.4 Hz), 8.73 (1H, brs)
ESI (LC-MS positive mode) m/z 389 (M+H).
Example 13
7-(4-Methylpiperazin-1-yl)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 2.38 (3H, s), 2.62 (4H, t, J=4.8 Hz), 3.38 (4H, t, J=4.8 Hz), 6.73 (1H, s), 7.35-7.54 (5H, m), 7.62-7.65 (2H, m), 8.00 (1H, d, J=2.6 Hz), 9.09 (1H, brs)
ESI (LC-MS positive mode) m/z 320 (M+H).
Example 14
7-(Benzylmethylamino)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 3.15 (3H, s), 4.67 (2H, s), 6.73 (1H, s), 7.10-7.55 (10H, m), 7.57-7.70 (3H, m), 9.19 (1H, brs)
ESI (LC-MS positive mode) m/z 341 (M+H).
Example 15
7-(2-Morpholin-4-ylethylamino)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 2.50 (4H, t, J=4.6 Hz), 2.69 (2H, t, J=5.8 Hz), 3.31 (2H, m), 3.74 (4H, t, J=4.6 Hz), 4.71 (1H, brs), 6.71 (1H, s), 7.06 (1H, dd, J=2.3, 8.6 Hz), 7.38-7.51 (5H, m), 7.60-7.63 (2H, m), 8.94 (1H, brs)
ESI (LC-MS positive mode) m/z 350 (M+H).
Example 16
7-(2-Morpholin-4-ylethylamino)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 2.50 (4H, brs), 2.69 (2H, t, J=6.0 Hz), 3.31 (2H, q, J=4.2 Hz), 3.74 (4H, t, J=4.6 Hz), 4.73 (1H, brs), 6.62 (1H, s), 7.06 (1H, dd, J=2.8, 8.4 Hz), 7.37-7.50 (5H, m), 7.58 (1H, dd, J=1.8, 7.4 Hz), 8.64 (1H, brs)
ESI (LC-MS positive mode) m/z 434 (M+H).
Example 17
7-[Methyl(2-morpholin-4-ylethyl)amino]-3-phenyl-2H-isoquinolin-1-one




0.05 ml of acetic acid and 13.2 mg (0.168 mmol) of sodium cyanoborohydride were added to 0.5 ml of a methanol solution containing 14.7 mg (0.0241 mmol) of the 7-(2-morpholin-4-ylethylamino)-3-phenyl-2H-isoquinolin-1-one obtained in Example 15. The obtained mixture was stirred at a room temperature for 6 hours. Thereafter, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, and the mixture was then extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and was then concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (methylene chloride:methanol=20:1), so as to obtain 12.8 mg (84%) of 7-[methyl(2-morpholin-4-ylethyl)amino]-3-phenyl-2H-isoquinolin-1-one in the form of a yellow solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.52 (4H, t, J=4.6 Hz), 2.59 (2H, t, J=7.3 Hz), 3.10 (3H, s), 3.61 (2H, t, J=7.3 Hz), 3.72 (4H, t, J=4.6 Hz), 6.73 (1H, s), 7.19 (1H, dd, J=2.8, 8.7 Hz), 7.38-7.66 (7H, m), 9.10 (1H, brs)
ESI (LC-MS positive mode) m/z 364 (M+H).
Example 18
7-[Methyl(2-morpholin-4-ylethyl)amino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




The above compound was synthesized via a reaction similar to that of Example 17, using the 7-[methyl(2-morpholin-4-ylethyl)amino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one obtained in Example 16 as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.52 (4H, t, J=4.4 Hz), 2.59 (2H, t, J=7.2 Hz), 3.10 (3H, s), 3.61 (2H, t, J=7.0 Hz), 3.72 (4H, t, J=4.6 Hz), 6.63 (1H, s), 7.18 (1H, dd, J=2.8, 8.8 Hz), 7.37-7.50 (4H, m), 7.57-7.60 (2H, m), 8.65 (1H, s)
ESI (LC-MS positive mode) m/z 448 (M+H).
Example 19
7-[Methyl-(2-morpholin-4-ylethyl)amino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by performing a reaction similar to that of Example 17, after performing a reaction similar to that of Example 4.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.51-2.61 (6H, m), 3.10 (3H, s), 3.59-3.64 (2H, m), 3.70-3.74 (4H, m), 6.44 (1H, s), 7.16-7.21 (1H, dd, J=3.0, 8.9 Hz), 7.44-7.47 (1H, d, J=8.91 Hz), 7.52-7.67 (4H, m), 7.78-7.81 (1H, m), 8.32 (1H, brs)
ESI (LC-MS positive mode) m/z 432 (M+H).
Example 20
7-(4-Hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




8.65 ml (8.65 mmol) of a 1 M lithium bis(trimethylsilyl)amide THF solution was added to a mixture consisting of 400 mg (1.24 mmol) of the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step B of Example 1; 427.2 mg (3.708 mmol) of 4-piperidinemethanol; 29.2 mg (0.074 mmol) of 2-dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl; and 28.3 mg (0.0309 mmol) of tris(dibenzylideneacetone)dipalladium. The obtained mixture was stirred under heating to reflux over a day and a night. Thereafter, the reaction solution was cooled to a room temperature, and a saturated ammonium chloride aqueous solution was then added thereto, followed by extraction with methylene chloride. Thereafter, the extract was washed with a saturated saline solution, and was then dried over anhydrous sodium sulfate. The extract was concentrated, and the obtained residue was then purified by silica gel column chromatography (methylene chloride:methanol=25:1 to 20:1), so as to obtain 355.6 mg (71%) of 7-(4-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a brown solid.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.27 (2H, dq, J=3.5, 12.1 Hz), 1.49-1.67 (1H, m), 1.72-1.83 (2H, m), 2.76 (2H, dt, J=2.0, 12.2 Hz), 3.25-3.35 (2H, m), 3.78-3.89 (2H, m), 4.51 (1H, t, J=5.3 Hz), 6.37 (1H, s), 7.43-7.60 (4H, m), 7.61-7.80 (2H, m), 7.85 (1H, d, J=7.6 Hz), 11.38 (1H, brs)
ESI (LC-MS positive mode) m/z 403 (M+H).
The following compounds (Examples 21 to 37) were synthesized by a method similar to that of Example 20, using the compound obtained in Example 1, 2, or 3, as a starting material.
Example 21
7-(4-Hydroxymethylpiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.43 (2H, dq, J=4.0, 12.2 Hz), 1.48-1.56 (1H, m), 1.63-1.81 (1H, m), 1.90 (2H, d, J=14.2 Hz), 2.86 (2H, dt, J=2.3, 12.2 Hz), 3.45-3.65 (2H, m), 3.86-3.96 (2H, m), 6.73 (1H, s), 7.38 (1H, dd, J=2.6, 8.9 Hz), 7.42-7.53 (4H, m), 7.63-7.69 (2H, m), 7.81 (1H, d, J=2.6 Hz), 9.08 (1H, brs)
ESI (LC-MS positive mode) m/z 335 (M+H).
Example 22
7-(4-Hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.25-1.48 (3H, m), 1.74 (1H, m), 1.89 (2H, d, J=13.2 Hz), 2.87 (2H, dt, J=2.4, 12.2 Hz), 3.57 (2H, t, J=5.4 Hz), 3.93 (2H, d, J=12.7 Hz), 6.33 (1H, s), 7.37-7.59 (6H, m), 7.82 (1H, d, J=2.4 Hz), 8.60 (1H, brs)
ESI (LC-MS positive mode) m/z 419 (M+H).
Example 23
7-(3-Hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.16-1.33 (1H, m), 1.60-2.05 (5H, m), 2.73 (1H, dd, J=9.9, 12.2 Hz), 2.90 (1H, dt, J=3.0, 11.7 Hz), 3.55-3.81 (3H, m), 3.83-3.93 (1H, m), 6.45 (1H, s), 7.41 (1H, dd, J=2.3, 8.6 Hz), 7.43-7.70 (4H, m), 7.75-7.84 (2H, m), 8.58 (1H, brs)
ESI (LC-MS positive mode) m/z 403 (M+H).
Example 24
7-(3-Hydroxymethylpiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.23-1.32 (1H, m), 1.64-2.07 (5H, m), 2.72 (1H, dd, J=9.9, 12.2 Hz), 2.89 (1H, dt, J=3.0, 12.2 Hz), 3.53-3.79 (3H, m), 3.90 (1H, dd, J=3.5, 12.2 Hz), 6.72 (1H, s), 7.35-7.52 (5H, m), 7.59-7.65 (2H, m), 7.82 (1H, d, J=2.6 Hz), 9.23 (1H, brs)
ESI (LC-MS positive mode) m/z 335 (M+H).
Example 25
7-(3-Hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.20-1.28 (1H, m), 1.69-1.75 (1H, m), 1.82-1.88 (3H, m), 1.94-2.01 (1H, m), 2.73 (1H, dd, J=10.4, 12.4 Hz), 2.90 (1H, dt, J=2.8, 11.2 Hz), 3.58-3.70 (2H, m), 3.76 (1H, d, J=12.8 Hz), 3.90 (1H, dd, J=4.0, 12.0 Hz), 6.63 (1H, s), 7.37-7.50 (5H, m), 7.58 (1H, dd, J=1.6, 7.6 Hz), 7.82 (1H, d, J=2.4 Hz), 8.82 (1H, brs)
ESI (LC-MS positive mode) m/z 419 (M+H).
Example 26
7-(2-Hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.64-1.80 (6H, m), 2.04-2.07 (1H, m), 3.12-3.20 (1H, m), 3.63-3.68 (2H, m), 3.86-3.93 (1H, m), 4.12-4.15 (1H, m), 6.45 (1H, s), 7.39-7.43 (1H, dd, J=2.31, 8.91 Hz), 7.45-7.48 (1H, d, J=8.58 Hz), 7.52-7.67 (3H, m), 7.78-7.81 (1H, m), 7.85-7.86 (1H, d, J=2.31 Hz), 8.54 (1H, brs)
EI (positive mode) m/z 402 (M+).
Example 27
7-(2-Hydroxymethylpiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.60-1.88 (6H, m), 2.35 (1H, brs), 3.10-3.22 (1H, m), 3.60-3.73 (2H, m), 3.89 (1H, dd, J=6.9, 10.9 Hz), 4.06-4.18 (1H, m), 6.71 (1H, s), 7.35-7.52 (5H, m), 7.60-7.65 (2H, m), 7.85 (1H, d, J=2.6 Hz), 9.33 (1H, brs)
ESI (LC-MS positive mode) m/z 335 (M+H).
Example 28
7-(2-Hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.61-1.80 (6H, m), 1.94-1.95 (1H, m), 3.12-3.20 (1, m), 3.65-3.73 (2H, m), 3.87-3.93 (1H, m), 4.13-4.16 (1H, m), 6.62 (1H, s), 7.37-7.51 (5H, m), 7.57-7.60 (1H, m), 7.85-7.86 (1H, d, J=2.31 Hz), 8.71 (1H, brs)
EI (positive mode) m/z 418 (M+).
Example 29
7-(4-Hydroxypiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.63-1.80 (3H, m), 1.98-2.11 (2H, m), 3.08 (2H, ddd, J=3.0, 9.9, 12.9 Hz), 3.67-3.80 (2H, m), 3.85-3.98 (1H, m), 6.45 (1H, s), 7.38 (1H, dd, J=2.6, 8.9 Hz), 7.43-7.68 (4H, m), 7.77-7.83 (2H, m), 8.55 (1H, brs)
ESI (LC-MS positive mode) m/z 389 (M+H).
Example 30
7-(4-Hydroxypiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.58-1.80 (3H, m), 1.98-2.11 (2H, m), 3.03-3.15 (2H, m), 3.68-3.79 (2H, m), 3.85-3.98 (1H, m), 6.72 (1H, s), 7.38 (1H, dd, J=2.6, 8.9 Hz), 7.43-7.53 (4H, m), 7.60-7.65 (2H, m), 7.81 (1H, d, J=2.6 Hz), 8.83 (1H, brs)
ESI (LC-MS positive mode) m/z 321 (M+H).
Example 31
7-(4-Hydroxypiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.51 (1H, d, J=4.4 Hz), 1.72 (2H, m), 2.05 (2H, m), 3.10 (2H, m), 3.70 (2H, m), 3.80-3.90 (1H, m), 6.60 (1H, brs), 7.40-7.60 (6H, m), 7.80 (1H, d, J=2.4 Hz), 8.60 (1H, brs)
ESI (LC-MS positive mode) m/z 405 (M+H).
Example 32
7-(3-Hydroxypiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.60-1.80 (2H, m), 1.82-2.02 (2H, m), 2.13-2.21 (1H, m), 3.22 (1H, dd, J=6.1, 12.7 Hz), 3.18-3.37 (2H, m), 3.52 (1H, dd, J=3.0, 12.2 Hz), 3.92-4.03 (1H, m), 6.45 (1H, s), 7.39 (1H, dd, J=2.6, 8.6 Hz), 7.42-7.70 (4H, m), 7.81 (1H, dd, J=1.6, 9.2 Hz), 7.84 (1H, d, J=2.6 Hz), 8.48 (1H, brs)
ESI (LC-MS positive mode) m/z 389 (M+H).
Example 33
7-(3-Hydroxypiperidin-1-yl)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.50-1.80 (2H, m), 1.82-2.05 (2H, m), 2.09-2.18 (1H, m), 3.20 (1H, dd, J=6.8, 12.0 Hz), 3.18-3.35 (2H, m), 3.51 (1H, dd, J=3.1, 12.0 Hz), 3.92-4.02 (1H, m), 6.72 (1H, s), 7.38 (1H, dd, J=2.6, 8.9 Hz), 7.41-7.53 (4H, m), 7.58-7.64 (2H, m), 7.83 (1H, d, J=2.6 Hz), 8.85 (1H, brs)
ESI (LC-MS positive mode) m/z 321 (M+H).
Example 34
7-(3-Hydroxypiperidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.65-1.75 (2H, m), 1.76-1.94 (2H, m), 2.06 (1H, d, J=7.3 Hz), 3.18-3.34 (3H, m), 3.52 (1H, dd, J=2.9, 12.2 Hz), 3.98 (1H, m), 6.60 (1H, s), 7.30-7.60 (6H, m), 7.84 (1H, d, J=2.4 Hz), 8.60 (1H, brs)
ESI (LC-MS positive mode) m/z 405 (M+H).
Example 35
7-(3-Hydroxypyrrolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.97-2.13 (2H, m), 3.16-3.20 (1H, m), 3.38-3.55 (3H, m), 4.4-4.5 (1H, m), 5.02-5.03 (1H, d, J=3.0 Hz), 6.35 (1H, s), 7.04-7.07 (1H, m), 7.1-7.2 (1H, m), 7.50-7.53 (1H, d, J=8.58 Hz), 7.58-7.61 (1H, d, J=7.26 Hz), 7.64-7.78 (2H, m), 7.83-7.86 (1H, d, J=7.92 Hz), 11.3 (1H, brs)
EI-MS m/z 374 (M+).
Example 36
7-(3-Hydroxypyrrolidin-1-yl)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.88-2.00 (1H, m), 2.00-2.18 (1H, m), 3.15-3.20 (1H, m), 3.30-3.50 (2H, m), 3.52 (1H, dd, J=4.8, 10.4 Hz), 4.40-4.50 (1H, m), 5.03 (1H, d, J=3.6 Hz), 6.84 (1H, s), 7.06 (1H, dd, J=2.6, 8.9 Hz), 7.15 (1H, d, J=2.6 Hz), 7.32-7.50 (3H, m), 7.57 (1H, d, J=8.6 Hz), 7.72-7.80 (2H, m), 11.24 (1H, m)
ESI (LC-MS positive mode) m/z 307 (M+H).
Example 37
7-(3-Hydroxypyrrolidin-1-yl)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.97 (1H, brs), 2.06-2.12 (1H, m), 3.18 (1H, d, J=9.6 Hz), 3.37-3.45 (2H, m), 3.50-3.54 (1H, m), 4.45 (1H, brs), 5.02 (1H, d, J=3.2 Hz), 6.54 (1H, s), 7.06 (1H, dd, J=2.4, 8.8 Hz), 7.15 (1H, s), 7.46-7.65 (5H, m), 11.30 (1H, s)
ESI (LC-MS positive mode) m/z 391 (M+H).
Example 38
7-Amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




21 ml (21 mmol) of a 1 M lithium bis(trimethylsilyl)amide THF solution was added to a mixture consisting of 2.50 g (7.72 mmol) of the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step B of Example 1; 64.9 mg (0.185 mmol) of 2-(dicyclohexylphosphino)biphenyl; and 70.7 mg (0.0772 mmol) of tris(dibenzylideneacetone)dipalladium. The obtained mixture was stirred under heating to reflux over a day and a night. Thereafter, the reaction solution was cooled to a room temperature, and 63 ml of 1 N hydrochloric acid was then added thereto, followed by stirring for 5 minutes. Thereafter, the reaction solution was neutralized in 8 ml of a 5 N sodium hydroxide aqueous solution and then extracted with methylene chloride. The extract was washed with a saturated saline solution, and was then dried over anhydrous sodium sulfate, followed by concentration. The obtained residue was then purified by silica gel column chromatography (ethyl acetate:hexane=3:1 to 6:1), so as to obtain 2.14 g (91%) of 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a brown solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 4.00 (2H, brs), 6.43 (1H, s), 7.07 (1H, dd, J=2.5, 8.3 Hz), 7.40 (1H, d, J=8.3 Hz), 7.50-7.69 (4H, m), 7.76-7.83 (1H, m), 8.63 (1H, brs)
ESI (LC-MS positive mode) m/z 305 (M+H).
The following compounds (Examples 39 and 40) were synthesized by a method similar to that of Example 38, using the compound obtained in Example 2 or 3 as a starting material.
Example 39
7-Amino-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 5.57 (2H, brs), 6.75 (1H, s), 7.01 (1H, dd, J=2.7, 8.1 Hz), 7.28-7.49 (5H, m), 7.73 (2H, d, J=8.9 Hz), 11.10 (1H, brs)
EI (positive mode) m/z 236 (M+).
Example 40
7-Amino-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 4.03 (2H, brs), 6.62 (1H, s), 7.07 (1H, dd, J=2.5, 8.4 Hz), 7.35-7.52 (4H, m), 7.58 (1H, dd, J=2.0, 7.3 Hz), 7.66 (1H, d, J=2.3 Hz), 8.80 (1H, brs)
ESI (LC-MS positive mode) m/z 321 (M+H).
Example 41
7-(2-Hydroxyethylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one and 7-[bis(2-hydroxyethyl)amino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




350 mg (1.15 mmol) of the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38 was dissolved in 11.5 ml of methanol, and thereafter, 1.15 ml of acetic acid and 552.5 mg (4.60 mmol) of glycolaldehyde dimer were added thereto. Thereafter, 722 mg (11.5 mmol) of sodium cyanoborohydride was added to the mixture under cooling on ice. The temperature of the mixture was increased to a room temperature, and the mixture was then stirred for 8 hours. Thereafter, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, and the mixture was then extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate and was then concentrated. The obtained residue was purified by silica gel column chromatography (methylene chloride:methanol=20:1 to 12:1), so as to obtain 61.8 mg (15%) of 7-(2-hydroxyethylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a yellow amorphous substance, as well as 369.3 mg (82%) of 7-[bis(2-hydroxyethyl)amino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a yellow foaming substance.
7-(2-hydroxyethylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
1H-NMR (270 MHz, CDCl3) δ (ppm): 1.79 (1H, brs), 3.46 (2H, t, J=5.6 Hz), 3.86-3.95 (2H, m), 4.42 (1H, brs), 6.44 (1H, s), 7.07 (1H, dd, J=2.6, 8.6 Hz), 7.41 (1H, d, J=8.6 Hz), 7.49-7.69 (4H, m), 7.78-7.82 (1H, m), 8.36 (1H, brs)
ESI (LC-MS positive mode) m/z 349 (M+H).
7-[bis(2-hydroxyethyl)amino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
1H-NMR (270 MHz, CDCl3) δ (ppm): 3.59 (2H, brs), 3.71 (4H, t, J=4.9 Hz), 3.94 (4H, t, J=4.9 Hz), 6.43 (1H, s), 7.19 (1H, dd, J=3.0, 8.9 Hz), 7.43 (1H, d, J=8.9 Hz), 7.49-7.68 (4H, m), 7.63 (1H, d, J=7.6 Hz), 8.56 (1H, brs)
ESI (LC-MS positive mode) m/z 393 (M+H).
The following compounds (Examples 42 to 45) were synthesized by a method similar to that of Example 41, using the compound obtained in Example 38, 39, or 40, as a starting material.
Example 42
7-(2-Hydroxyethyl)amino-3-phenyl-2H-isoquinolin-1-one monotrifluoroacetate and 7-[bis(2-hydroxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one




7-(2-hydroxyethyl)amino-3-phenyl-2H-isoquinolin-1-one monotrifluoroacetate was obtained by performing the same purification as that in Example 41 and further performing purification using preparative HPLC (ODS-80TS 55×300 mm; an acetonitrile:water solvent was used as an eluent).
7-(2-Hydroxyethyl)amino-3-phenyl-2H-isoquinolin-1-one monotrifluoroacetate
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.21 (2H, t, J=5.9 Hz), 3.59 (1H, t, J=5.0 Hz), 3.61 (2H, t, J=5.9 Hz), 3.85 (2H, brs), 6.79 (1H, s), 7.12 (1H, dd, J=2.4, 8.4 Hz), 7.22-7.24 (1H, m), 7.35-7.56 (4H, m), 7.72-7.76 (2H, m), 11.20 (1H, brs)
ESI (LC-MS positive mode) m/z 281 (M+H−TFA).
7-[Bis(2-hydroxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.45-3.63 (8H, m), 4.84 (2H, m), 6.81 (1H, s), 7.18-7.25 (1H, m), 7.33-7.57 (5H, m), 7.70-7.79 (2H, m), 11.22 (1H, brs)
ESI (LC-MS positive mode)m/z 325 (M+H).
Example 43
7-(2-Hydroxyethylamino)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one and 7-[bis(2-hydroxyethyl)amino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




7-(2-hydroxyethylamino)-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one
1H-NMR (270 MHz, CDCl3) δ (ppm): 1.70 (1H, brs), 3.46 (2H, t, J=5.1 Hz), 3.88-3.95 (2H, m), 4.40 (1H, brs), 6.62 (1H, s), 7.06 (1H, dd, J=2.6, 8.6 Hz), 7.35-7.50 (4H, m), 7.54 (1H, d, J=2.6 Hz), 7.58 (1H, dd, J=1.7, 7.3 Hz), 8.59 (1H, brs)
ESI (LC-MS positive mode) m/z 365 (M+H).
7-[Bis(2-hydroxyethyl)amino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one
1H-NMR (270 MHz, CDCl3) δ (ppm): 3.50-3.65 (8H, m), 4.84 (2H, t, J=5.1 Hz), 6.53 (1H, s), 7.23 (1H, dd, J=2.6, 8.9 Hz), 7.37 (1H, d, J=2.6 Hz), 7.43-7.64 (5H, m), 11.28 (1H, s)
ESI (LC-MS positive mode) m/z 409 (M+H).
Example 44
7-(2-Methoxyethylamino)-3-phenyl-2H-isoquinolin-1-one and 7-[bis-(2-methoxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one




7-(2-Methoxyethylamino)-3-phenyl-2H-isoquinolin-1-one
1H-NMR (270 MHz, CDCl3) δ (ppm): 3.40-3.50 (5.5H, m), 3.65-3.69 (2H, t, J=4.95 Hz), 4.39 (0.5H, brs), 6.71 (1H, s), 7.02-7.06 (1H, m), 7.32-7.51 (5.5H, m), 7.59-7.62 (2H, m), 8.86 (0.5H, brs)
EI-MS m/z 294 (M+).
7-[Bis-(2-methoxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one
1H-NMR (270 MHz, CDCl3) δ (ppm): 3.37 (6H, s), 3.43-3.73 (8H, m), 6.71 (1H, s), 7.20-7.24 (1H, dd, J=2.64, 8.91 Hz), 7.38-7.52 (4H, m), 7.56-7.57 (1H, d, J=2.64 Hz), 7.60-7.63 (2H, m), 8.83 (1H, brs)
ESI (LC-MS positive mode) m/z 353 (M+H).
Example 45
7-(2,3-Dihydroxypropylamino)-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CD3OD) δ (ppm): 3.17-3.24 (1H, dd, J=6.93, 13.2 Hz), 3.37-3.44 (1H, dd, J=4.95, 13.2 Hz), 3.56-3.69 (2H, m), 3.87-3.93 (1H, m), 6.84 (1H, s), 7.15-7.20 (1H, dd, J=2.31, 8.58 Hz), 7.38-7.52 (5H, m), 7.67-7.70 (2H, m)
FAB-MS m/z 311 (M+H).
Example 46
7-[(2,3-Dihydroxypropyl)(2-hydroxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one




The 7-(2-hydroxyethyl)amino-3-phenyl-2H-isoquinolin-1-one monotrifluoroacetate obtained in Example 42 was used as a raw material, and a method similar to that of Example 41 was applied, so as to obtain 7-[(2,3-dihydroxypropyl)(2-hydroxyethyl)amino]-3-phenyl-2H-isoquinolin-1-one.
1H-NMR (270 MHz, CD3OD) δ (ppm): 3.39-3.47 (1H, dd, J=7.92, 15.2 Hz), 3.56-3.69 (3H, m), 3.71-3.88 (4H, m), 3.98-4.07 (1H, m), 6.85 (1H, s), 7.35-7.52 (5H, m), 7.57-7.60 (1H, d, J=8.91 Hz), 7.66-7.70 (2H, m)
FAB-MS m/z 355 (M+H).
Example 47
7-[(2-Hydroxyethyl)methylamino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




120 mg (1.0 mmol) of glycolaldehyde dimer and 2 ml of acetic acid were added to 10 ml of a methanol solution containing 473 mg (1.55 mmol) of the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38. Thereafter, 754 mg (12.0 mmol) of sodium cyanoborohydride was further added thereto, and the obtained mixture was then stirred at a room temperature for 3 hours. Thereafter, 0.82 ml (10 mmol) of a 37% formalin aqueous solution was added to the reaction solution, and the obtained mixture was further stirred for 2.5 hours. Thereafter, the reaction solution was concentrated, and a saturated sodium bicarbonate aqueous solution and methylene chloride were then added to the concentrate. An organic layer was separated, and was then dried over anhydrous sodium sulfate. Thereafter, the solvent was distilled away under reduced pressure. The obtained residue was purified by silica gel chromatography (hexane:ethyl acetate methanol=15:30:1), so as to obtain 344 mg (61%) of 7-[(2-hydroxyethyl)methylamino]-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a yellow solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.12 (1H, brs), 3.12 (3H, s), 3.63 (2H, t, J=5.8 Hz), 3.88 (2H, t, J=5.8 Hz), 6.44 (1H, s), 7.24-7.26 (1H, m), 7.46 (1H, d, J=8.8 Hz), 7.52-7.65 (4H, m), 7.79 (1H, d, J=8.4 Hz), 8.55 (1H, brs)
ESI (LC-MS positive mode) m/z 363 (M+H).
The following compounds (Examples 48 to 52) were synthesized by a method similar to that of Example 47, using the compound obtained in Example 38, 39, or 40, as a starting material.
Example 48
7-[(2-Hydroxyethyl)methylamino]-3-phenyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.04 (3H, s), 3.51-3.61 (4H, m), 4.77 (1H, brs), 6.83 (1H, s), 7.26 (1H, dd, J=1.98, 8.91 Hz), 7.34 (1H, d, J=1.98 Hz), 7.38-7.48 (3H, m), 7.56 (1H, d, J=8.91 Hz), 7.76 (2H, d, J=8.25 Hz), 11.2 (1H, brs)
ESI (LC-MS positive mode) m/z 295 (M+H).
Example 49
7-[(2-Hydroxyethyl)methylamino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 2.29 (1H, brs), 3.12 (3H, s), 3.63 (2H, t, J=5.8 Hz), 3.89 (2H, t, J=5.8 Hz), 6.64 (1H, s), 7.24 (1H, dd, J=2.6, 8.9 Hz), 7.33-7.52 (4H, m), 7.59 (1H, dd, J=1.8, 7.1 Hz), 7.64 (1H, d, J=2.6 Hz), 9.00 (1H, brs)
ESI (LC-MS positive mode) m/z 379 (M+H).
Example 50
7-[(2,3-Dihydroxypropyl)-methylamino]-3-phenyl-2H-isoquinolin-1-one




1H-NMR (400 MHz, CD3OD) δ (ppm): 3.14 (3H, s), 3.42 (1H, dd, J=7.32, 15.1 Hz), 3.55-3.69 (3H, m), 3.93-3.99 (1H, m), 6.85 (1H, s), 7.34-7.42 (2H, m), 7.45-7.49 (3H, m), 7.58 (1H, d, J=9.28 Hz), 7.66-7.69 (2H, m)
FAB-MS m/z 325 (M+H).
Example 51
7-[Methyl-((2S,3R)-2,3,4-trihydroxybutyl)amino]-3-phenyl-2H-isoquinolin-1-one




1H-NMR (400 MHz, CD3OD) δ (ppm): 3.17 (3H, s), 3.36-3.41 (1H, m), 3.54-3.58 (1H, m), 3.63-3.68 (1H, m), 3.78-3.82 (1H, m), 3.87-3.96 (2H, m), 6.86 (1H, s), 7.38-7.42 (2H, m), 7.46-7.50 (3H, m), 7.56-7.59 (1H, d, J=8.79 Hz), 7.68-7.70 (2H, m)
FAB-MS m/z 355 (M+H).
Example 52
t-Butyl(2-{methyl-[1-oxo-3-(2-trifluoromethoxyphenyl)-1,2-dihydroisoquinolin-7-yl]amino}ethyl)carbamate




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.45 (9H, s), 3.11 (3H, s), 3.23-3.41 (4H, m), 4.72 (1H, brs), 6.63 (1H, s), 7.18-7, 25 (1H, m), 7.34-7.50 (4H, m), 7.55-7.62 (2H, m), 8.64 (1H, brs)
ESI (LC-MS positive mode) m/z 478 (M+H).
Example 53
7-[(2-Aminoethyl)-methylamino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one ditrifluoroacetate




2 ml of trifluoroacetic acid was added to 4 ml of a methylene chloride solution containing 455.4 mg (0.954 mmol) of t-butyl(2-{methyl-[1-oxo-3-(2-trifluoromethoxyphenyl)-1,2-dihydroisoquinolin-7-yl]amino}ethyl)carbamate obtained in Example 52. The obtained mixture was stirred at a room temperature for 2.5 hours. Thereafter, the reaction solution was concentrated. The obtained residue was purified by preparative HPLC (ODS-80TS 55×300 mm; an acetonitrile:water solvent was used as an eluent), so as to obtain 299.4 mg (52%) of 7-[(2-aminoethyl)methylamino]-3-(2-trifluoromethoxyphenyl)-2H-isoquinolin-1-one ditrifluoroacetate in the form of a deep green viscous oily substance.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.95-3.10 (6H, m), 3.65 (2H, t, J=6.9 Hz), 6.57 (1H, s), 7.32 (1H, dd, J=3.0, 8.9 Hz), 7.40-7.68 (6H, m), 7.84 (3H, brs), 11.37 (1H, s)
ESI (LC-MS positive mode) m/z 378 (M+H−2TFA).
Example 54
7-(2-Aminoethylamino)-3-phenyl-2H-isoquinolin-1-one ditrifluoroacetate




0.5 ml of acetic acid and 337 mg (2.12 mmol) of t-butyl N-(2-oxoethyl)carbamate were added to 5 ml of a methanol solution containing 100 mg (0.423 mmol) of the 7-amino-3-phenyl-2H-isoquinolin-1-one obtained in Example 39. Thereafter, 140 mg (2.12 mmol) of sodium cyanoborohydride was added thereto under cooling on ice, and the obtained mixture was then stirred at a room temperature for 1 hour. Thereafter, 140 mg (2.12 mmol) of sodium cyanoborohydride was further added to the reaction solution, followed by stirring over a day and a night. Thereafter, methanol was distilled away, and a saturated sodium bicarbonate aqueous solution was added thereto. The mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and the solvent was distilled away under reduced pressure, so as to obtain approximately 500 mg of a residue. The obtained residue was dissolved in a mixed solvent consisting of 1 ml of methylene chloride and 1 ml of methanol, and 7 ml of trifluoroacetic acid was then added thereto under cooling on ice. The mixture was stirred for 1 hour. Thereafter, the reaction solution was concentrated, and the obtained residue was then dissolved in methanol. The obtained solution was purified by preparative HPLC (ODS-80TS 55×300 mm; a 0.05% trifluoroacetic acid solution (water:acetonitrile=45:25) was used as an eluent), so as to obtain 73 mg (34%) of 7-(2-aminoethylamino)-3-phenyl-2H-isoquinolin-1-one ditrifluoroacetate in the form of a light yellow solid.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.02 (2H, t, J=6.2 Hz), 3.22-3.43 (6H, m), 6.23 (1H, t, J=5.5 Hz), 6.81 (1H, s), 7.10 (1H, dd, J=2.3, 8.8 Hz), 7.26-7.29 (1H, m), 7.36-7.54 (4H, m), 7.70-7.85 (3H, m)
ESI (LC-MS positive mode) m/z 280 (M+H−2TFA).
Example 55
7-[(2-Dimethylaminoethyl)methylamino]-3-phenyl-2H-isoquinolin-1-one




0.021 ml (0.12 mmol) of diisopropylethylamine, 0.5 ml of acetic acid, 1 ml of a 37% formalin aqueous solution, and 20 mg (2.96 mmol) of sodium cyanoborohydride were added to 5 ml of a methanol solution containing 30 mg (0.059 mmol) of the 7-(2-aminoethylamino)-3-phenyl-2H-isoquinolin-1-one ditrifluoroacetate obtained in Example 54. The obtained mixture was stirred at a room temperature over a day and a night. Thereafter, the solvent was distilled away, and a saturated sodium bicarbonate aqueous solution was added thereto, followed by extraction with ethyl acetate. The extract was dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The obtained residue was purified by preparative HPLC (ODS-80TS 55×300 mm; a 0.05% trifluoroacetic acid solution (water:acetonitrile=45:25) was used as an eluent). The obtained compound was once dissolved in ethyl acetate. The solution was washed with a saturated sodium bicarbonate aqueous solution, and was then dried over anhydrous magnesium sulfate, followed by concentration, so as to obtain 11 mg (58%) of 7-[(2-dimethylaminoethyl)methylamino]-3-phenyl-2H-isoquinolin-1-one in the form of a solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.24 (6H, s), 2.46 (2H, t, J=7.3 Hz), 3.02 (3H, s), 3.51 (2H, t, J=7.3 Hz), 6.65 (1H, s), 7.11 (1H, dd, J=2.6, 8.5 Hz), 7.29-7.44 (4H, m), 7.50 (1H, d, J=2.4 Hz), 7.56-7.60 (2H, m), 9.34 (1H, brs)
ESI (LC-MS positive mode) m/z 322 (M+H).
Example 56
7-[(2-Aminoethyl)-methylamino]-3-phenyl-2H-isoquinolin-1-one monotrifluoroacetate




The above compound was synthesized by applying a method similar to that of Example 53 after applying a method similar to that of Example 52, using the 7-amino-3-phenyl-2H-isoquinolin-1-one obtained in Example 39 as a raw material.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.97-3.10 (5H, m), 3.64 (2H, t, J=6.8 Hz), 6.86 (1H, s), 7.32 (1H, dd, J=2.7, 8.9 Hz), 7.35-7.53 (4H, m), 7.62 (1H, d, J=8.9 Hz), 7.74-7.77 (2H, m), 11.32 (1H, brs)
ESI (LC-MS positive mode) m/z 294 (M+H−TFA).
Example 57
2-Chloro-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide




0.236 ml (1.69 mmol) of triethylamine and 0.101 ml (1.27 mmol) of chloroacetyl chloride were added in this order to 200 mg (0.85 mmol) of 7-amino-3-phenyl-2H-isoquinolin-1-one obtained in Example 39. The obtained mixture was stirred at a room temperature for 2 hours. Thereafter, 30 ml of 1 N hydrochloric acid was added to the reaction solution, and the mixture was then extracted with methylene chloride (30 ml×2). The extract was dried over anhydrous magnesium sulfate, and the solvent was then distilled away under reduced pressure. The precipitated solid was collected by filtration, and the filtrate was then washed with a suitable amount of ether, so as to obtain 229 mg (86%) of 2-chloro-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide in the form of a light brown solid.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 4.31 (2H, s), 6.90 (1H, s), 7.38-7.52 (3H, m), 7.70 (1H, d, J=8.6 Hz), 7.78 (2H, m), 7.87 (1H, d, J=2.4, 8.6 Hz), 8.55 (1H, d, J=2.4 Hz), 10.61 (1H, s), 11.49 (1H, s)
ESI (LC-MS positive mode) m/z 313 (M+H).
The following compounds (Examples 58 to 63) were synthesized by a method similar to that of Example 57, using the compound obtained in Example 38 or 39 as a raw material.
Example 58
2-Methoxy-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.41 (3H, s), 4.06 (2H, s), 6.89 (1H, s), 7.38-7.55 (3H, m), 7.67 (1H, d, J=8.6 Hz), 7.74-7.81 (2H, m), 7.90-7.98 (1H, m), 8.63 (1H, s), 10.08 (1H, s), 11.47 (1H, s)
EI (positive mode) m/z 308 (M+).
Example 59
N-(1-Oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)-2-phenoxyacetamide




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 4.76 (2H, s), 6.90 (1H, s), 6.92-7.09 (3H, m), 7.28-7.40 (2H, m), 7.41-7.53 (3H, m), 7.64-7.73 (1H, m), 7.74-7.82 (2H, m), 7.90-8.00 (1H, m), 8.59 (1H, s), 10.40 (1H, s), 11.49 (1H, s)
EI (positive mode) m/z 370 (M+).
Example 60
2-Benzyloxy-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide




1H-NMR (270 MHz, CDCl3) δ (ppm): 4.15 (2H, s), 4.69 (2H, s), 6.76 (1H, s), 7.37-7.42 (5.5H, m), 7.46-7.55 (3H, m), 7.59-7.66 (3H, m), 8.17 (1H, d, J=1.98 Hz), 8.37 (1H, dd, J=2.31, 8.58 Hz), 8.60 (1H, brs), 8.98 (0.5H, brs)
EI-MS m/z 384 (M+).
Example 61
Ethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.28 (3H, t, J=6.8 Hz), 4.17 (2H, q, J=6.8 Hz), 6.41 (1H, s), 7.60-7.87 (6H, m), 8.38 (1H, s), 9.95 (1H, brs), 11.50 (1H, brs)
ESI (LC-MS positive mode) m/z 377 (M+H).
Example 62
Ethyl(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.28 (3H, t, J=7.0 Hz), 4.17 (2H, q, J=7.0 Hz), 6.86 (1H, s), 7.36-7.51 (3H, m), 7.65 (1H, d, J=8.9 Hz), 7.75-7.80 (3H, m), 8.38 (1H, s), 9.95 (1H, s), 11.43 (1H, s)
EI (positive mode) m/z 308 (M+).
Example 63
t-Butyl[(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-ylcarbamoyl)methyl]carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.41 (9H, s), 3.77 (2H, d, J=6.2 Hz), 6.88 (1H, s), 7.05-7.15 (1H, m), 7.41-7.50 (3H, m), 7.67 (1H, d, J=8.9 Hz), 7.72-7.80 (2H, m), 7.82-7.90 (1H, m), 8.54 (1H, s), 10.24 (1H, s), 11.45 (1H, m)
EI (positive mode) m/z 393 (M+).
Example 64
2-Amino-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide monotrifluoroacetate




16 mg (0.041 mmol) of t-butyl[(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-ylcarbonyl)methyl]carbamate obtained in Example 63 was dissolved in a mixed solvent consisting of 1 ml of methylene chloride and 1 ml of methanol. Thereafter, 1 ml of trifluoroacetic acid was added thereto, and the obtained mixture was stirred under cooling on ice for 1 hour. Thereafter, diethyl ether-hexane was added to the reaction solution, and the generated solid was collected by filtration, so as to obtain 12 mg of 2-amino-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide monotrifluoroacetate in the form of a colorless solid.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.80 (2H, s), 6.90 (1H, s), 7.40-7.52 (3H, m), 7.67-7.81 (3H, m), 7.82-7.88 (1H, m), 8.14 (1H, brs), 8.53 (1H, s)
EI (positive mode) m/z 293 (M−TFA).
Example 65
2-Morpholin-4-yl-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide




0.042 ml (0.47 mmol) of morpholine was added to a DMF solution containing 50 mg (0.16 mmol) of the 2-chloro-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide obtained in Example 57, and the obtained mixture was then stirred at 100° C. for 30 minutes. Thereafter, 30 ml of a 1 N sodium hydroxide aqueous solution was added to the reaction solution, and the mixture was then extracted with ethyl acetate (50 ml×2). The extract was washed with 30 ml of water, and was then dried over anhydrous magnesium sulfate. Thereafter, the solvent was distilled away under reduced pressure. The precipitated solid was collected by filtration, and the filtrate was then washed with a suitable amount of ether and hexane, so as to obtain 44 mg (76%) of 2-morpholin-4-yl-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide in the form of a colorless solid.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.51-2.56 (4H, m), 3.18 (2H, s), 3.66 (4H, t, J=4.7 Hz), 6.89 (1H, s), 7.38-7.52 (3H, m), 7.68 (1H, d, J=8.6 Hz), 7.72-7.80 (2H, m), 7.90-7.98 (1H, m), 8.57 (1H, d, J=2.4 Hz), 10.05 (1H, s), 11.46 (1H, s)
ESI (LC-MS positive mode) m/z 364 (M+H).
The following compounds (Examples 66 and 67) were synthesized by a method similar to that of Example 65.
Example 66
2-Dimethylamino-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.30 (6H, s), 3.12 (2H, s), 6.88 (1H, s), 7.40-7.52 (3H, m), 7.66 (1H, d, J=8.6 Hz), 7.76-7.80 (2H, m), 7.92 (1H, dd, J=2.3, 8.6 Hz), 8.62 (1H, d, J=2.1 Hz), 10.04 (1H, s), 11.45 (1H, brs)
ESI (LC-MS positive mode) m/z 322 (M+H).
Example 67
2-(4-Methylpiperazin-1-yl)-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.18 (3H, s), 2.30-2.60 (8H, m), 3.16 (2H, s), 6.89 (1H, s), 7.38-7.52 (3H, m), 7.67 (1H, d, J=8.5 Hz), 7.78 (2H, dd, J=1.6, 7.8 Hz), 7.93 (1H, dd, J=2.1, 8.5 Hz), 8.56 (1H, d, J=2.1 Hz), 9.99 (1H, s), 11.46 (1H, brs)
ESI (LC-MS positive mode) m/z 377 (M+H).
Example 68
6-Morpholin-4-yl-3-phenyl-2H-isoquinolin-1-one
Step A
4-Chloro-2,N,N-trimethylbenzamide




The above compound was synthesized by a method similar to that in Step A of Example 1, using 4-chloro-2-methylbenzoic acid as a raw material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.27 (3H, s), 2.83 (3H, s), 3.13 (3H, s), 7.11 (1H, d, J=8.1 Hz), 7.17-7.23 (2H, m)
ESI (LC-MS positive mode) m/z 198 (M+H).
Step B
6-Chloro-3-phenyl-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step B of Example 1, using the 4-chloro-2, N,N-trimethylbenzamide obtained in Step A as a raw material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.69 (1H, s), 7.42 (1H, dd, J=1.9, 8.4 Hz), 7.44-7.59 (4H, m), 7.66-7.72 (2H, m), 8.32 (1H, d, J=8.4 Hz), 9.75 (1H, brs)
ESI (LC-MS positive mode) m/z 256 (M+H).
Step C
6-Morpholin-4-yl-3-phenyl-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 4, using the 6-chloro-3-phenyl-2H-isoquinolin-1-one obtained in Step B as a raw material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 3.36 (4H, t, J=5.1 Hz), 3.90 (4H, t, J=5.1 Hz), 6.64 (1H, s), 6.87 (1H, d, J=2.6 Hz), 7.09 (1H, dd, J=2.6, 8.9 Hz), 7.42-7.55 (3H, m), 7.61-7.67 (2H, m), 8.27 (1H, d, J=8.9 Hz), 8.90 (1H, brs)
ESI (LC-MS positive mode) m/z 307 (M+H).
The following compounds (Examples 69 to 73) were synthesized by a method similar to that of Example 4, using the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step B of Example 1 as a starting material.
Example 69
(4aS,8aR)-3′-(2-Trifluoromethylphenyl)-3,4,4a,5,6,7,8,8a-octahydro-1H, 2′H-[2,7′]biisoquinolinyl-1′-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.02-1.05 (3H, m), 1.26-1.49 (4H, m), 1.68 (3H, m), 1.78 (2H, m), 2.47 (1H, t, J=11.8 Hz), 2.83 (1H, dt, J=2.8, 12.4 Hz), 3.72 (1H, d, J=12.4 Hz), 3.91 (1H, d, J=12.0 Hz), 6.44 (1H, s), 7.38 (1H, dd, J=2.8, 8.8 Hz), 7.45 (1H, d, J=8.8 Hz), 7.53 (1H, d, J=7.6 Hz), 7.58 (1H, t, J=7.6 Hz), 7.65 (1H, t, J=7.0 Hz), 7.79-7.81 (2H, m), 8.35 (1H, brs)
ESI (LC-MS positive mode) m/z 427 (M+H).
Example 70
7-((2S,6R)-2,6-Dimethylmorpholin-4-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.30 (6H, d, J=6.4 Hz), 2.53 (2H, t, J=11.4 Hz), 3.64 (2H, d, J=10.8 Hz), 3.81-3.88 (2H, m), 6.46 (1H, s), 7.36 (1H, dd, J=2.8, 8.8 Hz), 7.49 (1H, d, J=8.8 Hz), 7.54 (1H, d, J=7.6 Hz), 7.59 (1H, t, J=7.6 Hz), 7.66 (1H, t, J=7.2 Hz), 7.78-7.82 (2H, m), 8.41 (1H, brs)
ESI (LC-MS positive mode) m/z 403 (M+H).
Example 71
7-((S)-2-Hydroxymethylpyrrolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 2.04-2.15 (4H, m), 2.45. (1H, brs), 3.24-3.29 (1H, m), 3.62 (2H, t, J=6.6 Hz), 3.80 (1H, d, J=11.2 Hz), 4.01 (1H, brs), 6.45 (1H, s), 7.15 (1H, dd, J=3.2, 8.8 Hz), 7.46 (1H, d, J=8.8 Hz), 7.52-7.65 (4H, m), 7.79 (1H, d, J=7.6 Hz), 8.58 (1H, brs)
ESI (LC-MS positive mode) m/z 389 (M+H).
Example 72
7-((R)-2-Hydroxymethylpyrrolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 2.06-2.15 (4H, m), 2.50 (1H, brs), 3.24-3.29 (1H, m), 3.62 (2H, t, J=8.8 Hz), 3.81 (1H, d, J=10.4 Hz), 4.00 (1H, brs), 6.45 (1H, s), 7.14 (1H, dd, J=2.6, 8.8 Hz), 7.45 (1H, d, J=8.8 Hz), 7.52-7.65 (4H, m), 7.79 (1H, d, J=7.6 Hz), 8.61 (1H, brs)
ESI (LC-MS positive mode) m/z 389 (M+H).
Example 73
7-Azetidin-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 2.43 (2H, quintet, J=7.2 Hz), 4.01 (4H, t, J=7.4 Hz), 6.44 (1H, s), 6.86 (1H, dd, J=2.4, 8.4 Hz), 7.34 (1H, d, J=2.4 Hz), 7.43 (1H, d, J=8.8 Hz), 7.54 (1H, t, J=6.4 Hz), 7.58 (1H, d, J=7.6 Hz), 7.64 (1H, t, J=7.0 Hz), 7.80 (1H, d, J=8.0 Hz), 8.34 (1H, brs)
ESI (LC-MS positive mode) m/z 345 (M+H).
Example 74
4a-Hydroxy-3′-(2-trifluoromethylphenyl)-3,4,4a,5,6,7,8,8a-octahydro-1H, 2′H-[2,7′]biisoquinolinyl-1′-one




The above compound was synthesized by a method similar to that of Example 20, using the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step B of Example 1 as a starting material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 1.30-1.85 (11H, m), 2.15-2.22 (1H, m), 3.38 (2H, t, J=11.2 Hz), 3.51 (2H, d, J=11.2 Hz), 6.44 (1H, s), 7.35 (1H, dd, J=2.8, 8.8 Hz), 7.45 (1H, d, J=8.8 Hz), 7.54 (1H, t, J=7.2 Hz), 7.60 (1H, d, J=8.0 Hz), 7.65 (1H, d, J=7.6 Hz), 7.78-7.82 (2H, m), 8.31 (1H, brs)
ESI (LC-MS positive mode) m/z 443 (M+H).
Example 75
Methyl 1-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]piperidin-4-carboxylate




150 mg (0.463 mmol) of the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step B of Example 1; 22 mg (0.056 mmol) of 2-dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl; 21.1 mg (0.023 mmol) of tris(dibenzylideneacetone)dipalladium; and 603 mg (1.85 mmol) of cesium carbonate were mixed. The obtained mixture was dried under reduced pressure for 2 hours. Thereafter, 188 μl (1.39 mmol) of methyl isonipecotate and 2.32 ml of dimethoxyethane were added to the resultant, and the obtained mixture was then stirred under heating to ref lux for 17 hours. Thereafter, a saturated ammonium chloride aqueous solution was added to the reaction solution, and the mixture was then extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and the solvent was then distilled away under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:1), so as to obtain 17.5 mg (8.8%) of methyl 1-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]piperidin-4-carboxylate in the form of a light yellow solid.
1H-NMR (400 MHz, CDCl3) δ (ppm): 1.91-2.00 (2H, m), 2.01-2.10 (2H, m), 2.50-2.55 (1H, m), 2.90-3.00 (2H, m), 3.72 (3H, s), 3.82-3.85 (2H, m), 6.45 (1H, s), 7.35-7.45 (1H, m), 7.48 (1H, d, J=8.0 Hz), 7.54 (1H, d, J=7.2 Hz), 7.59 (1H, t, J=7.6 Hz), 7.65 (1H, t, J=7.6 Hz), 7.75-7.85 (2H, m), 8.34 (1H, brs)
ESI (LC-MS positive mode) m/z 431 (M+H).
Example 76
7-(4-Hydroxypiperidin-1-yl)-3-naphthalen-1-yl-2H-isoquinolin-1-one
Step A
7-Chloro-3-naphthalen-1-yl-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step B of Example 1, using the 5-chloro-2, N-dimethylbenzamide prepared in Step A of Example 1 as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.67 (1H, s), 7.50-7.70 (7H, m), 7.91-8.05 (3H, m)8.40-8.45 (1H, m)
ESI (LC-MS positive mode) m/z 306 (M+H).
Step B
7-(4-Hydroxypiperidin-1-yl)-3-naphthalen-1-yl-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 20, using the 7-chloro-3-naphthalen-1-yl-2H-isoquinolin-1-one prepared in Step B as a starting material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 1.48-1.52 (1H, m), 1.70-1.80 (2H, m), 2.03-2.10 (2H, m), 3.05-3.15 (2H, m), 3.75-3.85 (2H, m), 3.90-4.00 (1H, m), 6.64 (1H, s), 7.41-7.70 (6H, m), 7.93-7.96 (3H, m), 8.06 (1H, d, J=7.8 Hz), 8.49 (1H, brs)
ESI (LC-MS positive mode) m/z 371 (M+H).
Example 77
7-(1,4-Dioxa-8-azaspiro[4.5]deca-8-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 4, using the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step B of Example 1 as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 1.86 (4H, t, J=5.6 Hz), 3.51 (4H, t, J=5.6 Hz), 4.01 (4H, s), 6.45 (1H, s), 7.38 (1H, dd, J=2.4, 8.7 Hz), 7.43-7.69 (4H, m), 7.76-7.84 (2H, m), 8.36 (1H, brs)
ESI (LC-MS positive mode) m/z 431 (M+H).
Example 78
7-(2-Hydroxymethylmorpholin-4-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 20, using the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step B of Example 1 as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.25-2.38 (1H, m), 2.77 (1H, t, J=11.6 Hz), 2.93 (1H, dt, J=3.3, 11.9 Hz), 3.47-3.91 (6H, m), 4.07 (1H, dd, J=2.3, 11.6 Hz), 6.47 (1H, m), 7.37 (1H, dd, J=2.6, 8.9 Hz), 7.46-7.70 (4H, m), 7.77-7.83 (2H, m), 8.79 (1H, brs)
ESI (LC-MS positive mode) m/z 405 (M+H).
Example 79
7-(4-Hydroxy-4-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
Step A
7-(4-Oxopiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




70 mg (0.163 mmol) of the 7-(1,4-dioxa-8-azaspiro[4.5]deca-8-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 77 was suspended in 3 ml of 1 N hydrochloric acid. The suspension was stirred under heating to reflux overnight. Thereafter, 2.9 ml of a 1 N sodium hydroxide aqueous solution and a saturated sodium bicarbonate solution were added to the reaction solution, and the obtained reaction solution was then extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate and was then concentrated. The obtained residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:3 to 1:4), so as to obtain 55.9 mg (89%) of 7-(4-oxopiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a light yellow solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.59 (4H, t, J=6.2 Hz), 3.75 (4H, t, J=6.2 Hz), 6.48 (1H, s), 7.41 (1H, dd, J=2.5, 8.7 Hz), 7.47-7.70 (4H, m), 7.75-7.85 (2H, m), 9.12-9.60 (1H, brs)
ESI (LC-MS positive mode) m/z 387 (M+H).
Step B
7-(4-Hydroxy-4-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




30 mg (0.0776 mmol) of the 7-(4-oxopiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step A, 51.3 mg (0.233 mmol) of trimethylsulfoxonium iodide, and 26.1 mg (0.233 mmol) of sodium t-butoxide were dissolved in 1.16 ml of DMSO. The obtained solution was stirred at a room temperature overnight. Thereafter, water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and was then concentrated. The obtained residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:3), so as to obtain 16.6 mg of a light yellow solid.
The obtained solid was dissolved in 1 ml of 1,4-dioxane, and 1 ml of a 1 N sodium hydroxide aqueous solution was added thereto, followed by stirring under heating for 2 hours. Thereafter, 1 ml of 1 N hydrochloric acid and a saturated ammonium chloride aqueous solution were added to the reaction solution, and the obtained mixture was then extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and was then concentrated. The obtained residue was purified by silica gel column chromatography (methylene chloride:methanol=12:1 to 10:1), so as to obtain 12.2 mg (37%) of 7-(4-hydroxy-4-hydroxymethylpiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a colorless solid.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.40-1.51 (2H, m), 1.64-1.78 (2H, m), 3.07-3.24 (4H, m), 3.55-3.65 (2H, m), 4.25 (1H, s), 4.60 (1H, t, J=5.8 Hz), 6.37 (1H, s), 7.43-7.90 (7H, m), 11.37 (1H, brs)
ESI (LC-MS positive mode) m/z 419 (M+H).
Example 80
3-(4-Methoxyphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one
Step A
5-Chloro-2,N,N-trimethylbenzamide




The above compound was synthesized by a method similar to that in Step A of Example 1, using 5-chloro-2-methylbenzoic acid as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.25 (3H, s), 2.85 (3H, s), 3.12 (3H, s), 7.15 (1H, d, J=8.4 Hz) 7.16 (1H, d, J=2.3 Hz), 7.24 (1H, dd, J=2.3, 8.4 Hz)
ESI (LC-MS positive mode) m/z 198 (M+H).
Step B
2,N,N-Trimethyl-5-morpholin-4-ylbenzamide




The above compound was synthesized by a method similar to that of Example 4, using the 5-chloro-2, N,N-trimethylbenzamide prepared in Step A as a starting material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.19 (3H, s), 2.84 (3H, s), 3.09-3.13 (7H, m), 3.85 (4H, t, J=4.1 Hz), 6.72 (1H, d, J=2.6 Hz), 6.83 (1H, dd, J=2.3, 8.2 Hz), 7.10 (1H, d, J=8.2 Hz)
ESI (LC-MS positive mode) m/z 249 (M+H).
Step C
3-(4-Methoxyphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step B of Example 1, using the 2,N,N-trimethyl-5-morpholin-4-ylbenzamide prepared in Step B as a starting material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 3.30 (4H, t, J=4.9 Hz), 3.87 (3H, s), 3.90 (4H, t, J=4.9 Hz), 6.64 (1H, s), 7.01 (2H, d, J=8.3 Hz), 7.34 (1H, dd, J=2.7, 9.0 Hz), 7.49-7.55 (3H, m), 7.78 (1H, d, J=2.4 Hz), 8.60 (1H, brs)
ESI (LC-MS positive mode) m/z 337 (M+H).
The following compounds (Examples 81 to 89) were synthesized by a method similar to that in Step B of Example 1, using the 2,N,N-trimethyl-5-morpholin-4-ylbenzamide prepared in Step B of Example 80 as a starting material.
Example 81
3-(2-Methoxyphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 3.31 (4H, t, J=4.9 Hz), 3.91 (4H, t, J=4.9 Hz), 3.93 (3H, s), 6.68 (1H, d, J=2.0 Hz), 7.00-7.09 (2H, m), 7.32-7.58 (4H, m), 7.80 (1H, d, J=2.9 Hz), 9.42 (1H, brs)
ESI (LC-MS positive mode) m/z 337 (M+H).
Example 82
3-(2-Ethylphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.19 (3H, t, J=7.8 Hz), 2.71 (2H, q, J=7.3 Hz), 3.31 (4H, t, J=4.9 Hz), 3.91 (4H, t, J=4.9 Hz), 6.42 (1H, s), 7.30-7.51 (6H, m), 7.81 (1H, d, J=2.4 Hz), 8.26 (1H, brs)
ESI (LC-MS positive mode) m/z 335 (M+H).
Example 83
3-(2-Methylsulfanylphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 2.46 (3H, s), 3.30 (4H, t, J=4.9 Hz), 3.90 (4H, t, J=4.9 Hz), 6.55 (1H, s), 7.23-7.42 (5H, m), 7.51 (1H, d, J=8.3 Hz), 7.81 (1H, d, J=2.4 Hz), 8.72 (1H, brs)
ESI (LC-MS positive mode) m/z 353 (M+H).
Example 84
3-(2-Bromophenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one




ESI (LC-MS positive mode) m/z 385 (M+H), 387 (M+H+2).
Example 85
7-Morpholin-4-yl-3-(2-piperidin-1-ylphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.50-1.60 (2H, m), 1.75-1.80 (4H, m), 2.90-2.94 (4H, m), 3.31 (4H, t, J=4.9 Hz), 3.91 (4H, t, J=4.9 Hz), 6.71 (1H, s), 7.12-7.23 (2H, m), 7.32-7.38 (2H, m), 7.54 (1H, d, J=8.3 Hz), 7.61 (1H, dd, J=1.5, 7.8 Hz), 7.83 (1H, d, J=2.4 Hz), 11.50 (1H, brs)
ESI (LC-MS positive mode) m/z 390 (M+H).
Example 86
7-Morpholin-4-yl-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 2.97-3.01 (4H, m), 3.30-3.33 (4H, m), 3.87-3.92 (8H, m), 6.69 (1H, d, J=2.0 Hz), 7.14-7.20 (2H, m), 7.33-7.41 (2H, m), 7.52-7.60 (2H, m), 7.81 (1H, d, J=2.4 Hz), 10.9 (1H, brs)
ESI (LC-MS positive mode) m/z 392 (M+H).
Example 87
Methyl 2-hydroxy-3-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-ylamino]propionate




550 mg (1.81 mmol) of the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38 was added to 3.6 ml of a methanol solution containing 185 mg (1.81 mmol) of a known epoxide described in publications. The obtained mixture was stirred at 70° C. for 14 hours. Thereafter, the reaction solution was concentrated. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:1 to 3:1), so as to obtain 356 mg (48%) of methyl 2-hydroxy-3-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-ylamino]propionate in the form of a light yellow foaming substance.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.28-3.39 (1H, m), 3.40-3.52 (1H, m), 3.66 (3H, s), 4.26-4.34 (1H, m), 5.78 (1H, d, J=5.7 Hz), 6.19 (1H, t, J=6.2 Hz), 7.14 (1H, dd, J=2.6, 8.5 Hz), 7.28 (1H, d, J=2.4 Hz), 7.41 (1H, d, J=8.6 Hz), 7.58 (1H, d, J=7.3 Hz), 7.63-7.79 (3H, m), 7.80-7.87 (1H, m), 11.27 (1H, s)
ESI (LC-MS positive mode) m/z 407 (M+H).
Example 88
3-(3,5-Dimethoxyphenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 3.31 (4H, t, J=4.9 Hz), 3.86 (6H, s), 3.91 (4H, t, J=4.9 Hz), 6.52 (1H, s), 6.70-6.75 (3H, m), 7.35 (1H, dd, J=2.4, 8.8 Hz), 7.53 (1H, d, J=8.8 Hz), 7.79 (1H, d, J=2.0 Hz), 8.76 (1H, brs)
ESI (LC-MS positive mode) m/z 367 (M+H).
Example 89
7-Morpholin-4-yl-3-(3,4,5-trimethoxyphenyl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 3.32 (4H, t, J=4.8 Hz), 3.91 (3H, s), 3.91 (4H, t, J=4.8 Hz), 3.95 (6H, s), 6.66 (1H, s), 6.80 (2H, s), 7.36 (1H, dd, J=1.5, 8.3 Hz), 7.54 (1H, d, J=8.8 Hz), 7.78 (1H, d, J=2.4 Hz), 8.86 (1H, brs)
ESI (LC-MS positive mode) m/z 397 (M+H).
The following compounds (Examples 90 to 96) were synthesized by applying a method similar to that in Step B of Example 1 and then applying a method similar to that of Example 20, using the 5-chloro-2,N-dimethylbenzamide obtained in Step A of Example 1 as a starting material.
Example 90
7-(3-Hydroxypiperidin-1-yl)-3-(4-methoxy-2-methylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.58-2.00 (4H, m), 2.35 (3H, s), 248-2.63 (1H, m), 3.13-3.22 (2H, m), 3.27-3.34 (1H, m), 3.51 (1H, dd, J=12.0, 3.0 Hz), 3.83 (3H, s), 3.93-4.02 (1H, m), 6.37 (1H, s), 6.78-6.82 (2H, m), 7.27 (1H, d, J=8.0 Hz), 7.37 (1H, dd, J=8.5, 2.5 Hz), 7.45 (1H, d, J=8.5 Hz), 7.81 (1H, d, J=2.5 Hz), 8.87 (1H, brs)
ESI (LC-MS positive mode) m/z 365 (M+H).
Example 91
7-(3-Hydroxypiperidin-1-yl)-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.66-1.77 (2H, m), 1.83-2.01 (2H, m), 2.10 (1H, d, J=7.0 Hz), 2.96-3.00 (4H, m), 3.17-3.31 (3H, m), 3.51 (1H, dd, J=12.0, 3.0 Hz), 3.86-3.90 (4H, m), 3.93-4.01 (1H, m), 6.69 (1H, d, J=1.5 Hz), 7.13-7.21 (2H, m), 7.35-7.42 (2H, m), 7.51 (1H, d, J=9.0 Hz), 7.59 (1H, dd, J=8.0, 1.5 Hz), 7.84 (1H, d, J=2.5 Hz), 10.87 (1H, brs)
ESI (LC-MS positive mode) m/z 406 (M+H).
Example 92
7-(3-Hydroxypiperidin-1-yl)-3-o-tolyl-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.60-1.79 (2H, m), 1.84-2.02 (2H, m), 2.25 (1H, d, J=7.0 Hz), 2.38 (3H, s), 3.16-3.33 (3H, m), 3.50 (1H, dd, J=12.0, 3.0 Hz), 3.93-4.03 (1H, m), 6.41 (1H, s), 7.25-7.40 (5H, m), 7.47 (1H, d, J=8.5 Hz), 7.84 (1H, d, J=2.5 Hz), 8.48 (1H, brs)
ESI (LC-MS positive mode) m/z 335 (M+H).
Example 93
7-(3-Hydroxypiperidin-1-yl)-3-(6-methoxybenzothiazol-2-yl)-2H-isoquinolin-1-one




1H-NMR (500 MHz, DMSO-d6) δ (ppm): 1.34-1.41 (1H, m), 1.50-1.57 (1H, m), 1.77-1.81 (1H, m), 1.90-1.94 (1H, m), 2.74-2.78 (1H, m), 2.88-2.93 (1H, m), 3.17 (1H, d, J=3.0 Hz), 3.60-3.70 (2H, m), 3.78 (1H, dd, J=6.5, 3.0 Hz), 3.78 (3H, s), 7.16 (1H, dd, J=9.0, 3.0 Hz), 7.32 (1H, brs), 7.48 (1H, dd, J=8.5, 3.0 Hz), 7.56 (1H, d, J=3.0 Hz), 7.73 (1H, d, J=8.5 Hz), 7.75 (1H, d, J=3.0 Hz), 7.94 (1H, d, J=9.0 Hz)
ESI (LC-MS positive mode) m/z 408 (M+H).
Example 94
7-(3-Hydroxypiperidin-1-yl)-3-(2-morpholin-4-ylmethylphenyl)-2H-isoquinolin-1-one
It is to be noted that 2-morpholin-4-ylmethylbenzonitrile used in a coupling reaction was prepared from cyanobenzyl bromide and morpholine in accordance with known methods described in publications (for example, Preparation, Bulletin de l'Academie Polonaise des Sciences, serie des Sciences Chimiques (1972), 20(5), 405-9; WO2003/048164; etc.).




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.62-1.74 (2H, m), 1.82-2.00 (2H, m), 2.07-2.17 (1H, m), 2.61-2.71 (4H, m), 3.15-3.31 (3H, m), 3.48 (1H, dd, J=12.0, 3.0 Hz), 3.51 (2H, s), 3.90-4.00 (5H, m), 6.59 (1H, s), 7.25-7.47 (4H, m), 7.51 (1H, d, J=9.0 Hz), 7.68 (1H, dd, J=7.5, 1.5 Hz), 7.83 (1H, d, J=2.5 Hz), 13.25 (1H, brs)
ESI (LC-MS positive mode) m/z 420 (M+H).
Example 95
7-(4-Hydroxypiperidin-1-yl)-3-[2-(methylphenylamino)phenyl]-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.50 (1H, m), 1.65-1.73 (2H, m), 2.00-2.05 (2H, m), 3.01-3.09 (2H, m), 3.11 (3H, s), 3.68-3.74 (2H, m), 3.85-3.95 (1H, m), 6.57 (1H, s), 6.78-6.82 (3H, m), 7.16-7.25 (2H, m), 7.27-7.45 (5H, m), 7.61 (1H, d, J=7.1 Hz), 7.75 (1H, s), 9.21 (1H, brs)
ESI (LC-MS positive mode) m/z 426 (M+H).
Example 96
3-(4-Fluoro-2-trifluoromethylphenyl)-7-(4-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.40-1.50 (1H, m), 1.68-1.76 (2H, m), 2.02-2.09 (2H, m), 3.04-3.17 (2H, m), 3.70-3.79 (2H, m), 3.87-3.98 (1H, m), 6.42 (1H, s), 7.27-7.40 (2H, m), 7.43-7.57 (3H, m), 7.81 (1H, s), 8.31 (1H, brs)
ESI (LC-MS positive mode) m/z 407 (M+H).
Example 97
7-(4-Hydroxypiperidin-1-yl)-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one
Step A
7-Chloro-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one




5.39 ml (9.69 mmol) of a 1.8 M lithium diisopropylamide THF solution was diluted with 10 ml of THF. Thereafter, 5 ml of a THF solution containing 383 mg (1.94 mmol) of the 5-chloro-2,N,N-trimethylbenzamide prepared in Step A of Example 80 was added dropwise to the diluted solution at −78° C. Thereafter, 5 ml of a THF solution containing 438 mg (2.33 mmol) of 2-(4-morpholino)benzonitrile was further added to the above mixture, and the obtained mixture was then stirred at −78° C. for 30 minutes. Thereafter, a saturated ammonium chloride aqueous solution was added to the reaction solution, and the mixture was then extracted with ethyl acetate. The extract was washed with a saturated saline solution, and was then dried over anhydrous sodium sulfate. The resultant was concentrated under reduced pressure. The obtained yellow oily product was crystallized from hexane/ethyl acetate (3:1), so as to obtain 575 mg (87%) of 7-chloro-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one in the form of a colorless crystal.
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.97-3.00 (4H, m), 3.87-3.90 (4H, m), 6.71 (1H, s), 7.19 (2H, m), 7.43 (1H, dt, J=1.2, 7.6 Hz), 7.53 (1H, d, J=8.4 Hz), 7.59-7.62 (2H, m), 8.39 (1H, s), 11.10 (1H, brs)
ESI (LC-MS positive mode) m/z 341 (M+H).
Step B
7-(4-Hydroxypiperidin-1-yl)-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 20, using the 7-chloro-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one obtained in Step A as a starting material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 1.48 (1H, d, J=4.4 Hz), 1.70-1.77 (2H, m), 2.03-2.07 (2H, m), 2.96-3.02 (4H, m), 3.04-3.13 (2H, m), 3.71-3.78 (2H, m), 3.86-3.94 (5H, m), 6.67 (1H, s), 7.12-7.21 (2H, m), 7.32-7.42 (2H, m), 7.50 (1H, d, J=8.8 Hz), 7.58 (1H, dd, J=1.4, 8.0 Hz), 7.82 (1H, d, J=3.2 Hz), 10.84 (1H, brs)
ESI (LC-MS positive mode) m/z 406 (M+H).
The following compounds (Examples 98 to 101) were synthesized by a method similar to that of Example 97, using the 5-chloro-2,N,N-trimethylbenzamide prepared in Step A of Example 80 as a starting material.
Example 98
3-Biphenyl-2-yl-7-(3-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.57-1.76 (2H, m), 1.82-1.99 (2H, m), 2.12-2.22 (1H, m), 3.11-3.29 (3H, m), 3.46 (1H, dd, J=12.0, 3.0 Hz), 3.90-4.00 (1H, m), 6.42 (1H, s), 7.28-7.57 (11H, m), 7.72 (1H, d, J=2.5 Hz), 8.07 (1H, brs)
ESI (LC-MS positive mode) m/z 397 (M+H).
Example 99
3-(2-Ethylphenyl)-7-(3-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.18 (3H, t, J=7.5 Hz), 1.65-1.79 (2H, m), 1.84-2.00 (2H, m), 2.15 (1H, d, J=7.0 Hz), 2.71 (2H, q, J=7.5 Hz), 3.16-3.33 (3H, m), 3.49 (1H, dd, J=12.0, 3.0 Hz), 3.94-4.03 (1H, m), 6.40 (1H, s), 7.24-7.43 (5H, m), 7.47 (1H, d, J=8.5 Hz), 7.85 (1H, d, J=2.5 Hz), 8.31 (1H, brs)
ESI (LC-MS positive mode) m/z 349 (M+H).
Example 100
7-(4-Hydroxypiperidin-1-yl)-3-[2-(2-methoxyethoxy)phenyl]-2H-isoquinolin-1-one
It is to be noted that 2-(2-methoxyethoxy)benzonitrile used in a coupling reaction was prepared from cyanobenzyl bromide and morpholine in accordance with known methods described in publications (for example, WO2003/048164, etc.).




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.73-1.78 (2H, m), 2.01-2.08 (2H, m), 3.01-3.11 (2H, m), 3.57 (3H, s), 3.71-3.77 (2H, m), 3.79-3.82 (2H, m), 3.85-3.93 (1H, m), 4.28-4.32 (2H, m), 6.65 (1H, s), 6.99-7.10 (2H, m), 7.31-7.40 (2H, m), 7.49 (1H, d, J=8.58 Hz), 7.55-7.59 (1H, m), 7.83 (1H, d, J=2.64 Hz) 10.1 (1H, brs)
ESI (LC-MS positive mode) m/z 395 (M+H).
Example 101
t-Butyl 4-{2-[7-(3-hydroxypiperidin-1-yl)-1-oxo-1,2-dihydroisoquinolin-3-yl]phenyl}piperazin-1-carboxylate
It is to be noted that 2-(4-t-butoxycarbonyl)piperazin-1-ylbenzonitrile used in a coupling reaction was prepared from cyanobenzyl bromide and morpholine in accordance with known methods described in publications (for example, WO2003/048164, etc.).




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.44 (9H, s), 1.60-1.78 (2H, m), 1.86-2.01 (2H, m), 2.24-2.34 (1H, m), 2.87-2.98 (4H, m), 3.14-3.35 (3H, m), 3.52 (1H, dd, J=12.0, 3.0 Hz), 3.55-3.64 (4H, m), 3.91-4.01 (1H, m), 6.68 (1H, s), 7.11 (1H, d, J=8.0 Hz), 7.17 (1H, t, J=8.0 Hz), 7.34-7.40 (2H, m), 7.50 (1H, d, J=9.0 Hz), 7.58 (1H, dd, J=8.0, 1.5 Hz), 7.83 (1H, d, J=2.5 Hz), 10.84 (1H, brs)
ESI (LC-MS positive mode) m/z 505 (M+H).
Example 102
7-(3-Hydroxypiperidin-1-yl)-3-(2-piperazin-1-ylphenyl)-2H-isoquinolin-1-one




Trifluoroacetic acid (0.2 ml) was added to a dichloromethane solution (0.3 ml) containing 11.5 mg (0.0227 mmol) of t-butyl 4-{2-[7-(3-hydroxypiperidin-1-yl)-1-oxo-1,2-dihydroisoquinolin-3-yl]phenyl}piperazin-1-carboxylate obtained in Example 101. The obtained mixture was stirred at a room temperature for 30 minutes. Thereafter, the solvent was distilled away under reduced pressure. The obtained residue was purified using BondElute NH2 (register trade mark; Varian; 1 g; dichloromethane:methanol=20:1), so as to obtain 8.9 mg (97%) of 7-(3-hydroxypiperidin-1-yl)-3-(2-piperazin-1-ylphenyl)-2H-isoquinolin-1-one in the form of a yellow solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 1.64-2.02 (5H, m), 2.95-2.99 (4H, m), 3.05-3.08 (4H, m), 3.15-3.34 (3H, m), 3.51 (1H, dd, J=12.0, 3.0 Hz), 3.94-4.01 (1H, m), 6.69 (1H, d, J=1.5 Hz), 7.13-7.18 (2H, m), 7.34-7.40 (2H, m), 7.51 (1H, d, J=8.5 Hz), 7.59 (1H, dd, J=8.0, 1.5 Hz), 7.84 (1H, d, J=2.5 Hz), 11.18 (1H, brs)
ESI (LC-MS positive mode) m/z 405 (M+H).
Example 103
7-(3-Hydroxypiperidin-1-yl)-3-[2-(4-methylpiperazin-1-yl)phenyl]-2H-isoquinolin-1-one




0.0185 ml (0.133 mmol) of triethylamine and 0.00665 ml (0.107 mmol) of iodomethane were added to an acetonitrile solution (0.4 ml) containing 3.6 mg (0.0089 mmol) of the 7-(3-hydroxypiperidin-1-yl)-3-(2-piperazin-1-ylphenyl)-2H-isoquinolin-1-one obtained in Example 102. The obtained mixture was stirred at a room temperature for 4 hours. Thereafter, the solvent was distilled away under reduced pressure. The obtained residue was developed and purified by thin-layer chromatography (NH2 F254s, Merck, developing solvent; dichloromethane:methanol=10:1, Rf value: 0.8), so as to obtain 1.8 mg (48%) of 7-(3-hydroxypiperidin-1-yl)-3-[2-(4-methylpiperazin-1-yl)phenyl]-2H-isoquinolin-1-one in the form of a yellow solid.
1H-NMR (270 MHz, CD3OD) δ (ppm): 1.41-1.55 (1H, m), 1.64-1.77 (1H, m), 1.90-2.07 (2H, m), 2.38 (3H, s), 2.48-2.66 (4H, m), 2.83 (1H, dd, J=12.0, 8.0 Hz), 2.90-3.03 (5H, m), 3.56-3.64 (1H, m), 3.73-3.87 (2H, m), 6.87 (1H, s), 7.17 (1H, ddd, J=8.0, 8.0, 1.5 Hz), 7.22 (1H, dd, J=8.0, 1.5 Hz), 7.40 (1H, ddd, J=8.0, 8.0, 1.5 Hz), 7.50 (1H, dd, J=9.0, 3.0 Hz), 7.58 (1H, dd, J=8.0, 1.5 Hz), 7.63 (1H, d, J=9.0 Hz), 7.71 (1H, d, J=3.0 Hz)
ESI (LC-MS positive mode) m/z 419 (M+H).
Example 104
7-Thiomorpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 4, using the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step B of Example 1 as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.70-2.85 (4H, m), 3.65-3.83 (4H, m), 6.46 (1H, s), 7.32 (1H, dd, J=2.6, 8.9 Hz), 7.45-7.70 (4H, m), 7.75 (1H, d, J=2.6 Hz), 7.81 (1H, d, J=7.3 Hz), 8.93 (1H, brs)
ESI (LC-MS positive mode) m/z 391 (M+H).
Example 105
7-(1-Oxothiomorpholin-4-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




20.1 mg (0.0515 mmol) of the 7-thiomorpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 104 was dissolved in 2.3 ml of methylene chloride, and 9.8 mg (0.0566 mmol) of m-chloroperbenzoic acid was further added to the solution. The obtained mixture was stirred at 0° C. for 2 hours. Thereafter, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, and the obtained mixture was then extracted with methylene chloride. The extract was dried over anhydrous sodium sulfate, and was then concentrated. The obtained residue was purified by silica gel column chromatography (methylene chloride:methanol=20:1), so as to obtain 16.6 mg (79%) of 7-(1-oxothiomorpholin-4-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a light yellow solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.80-3.00 (4H, m), 3.80 (2H, dt, J=14.9, 3.8 Hz), 4.16 (2H, ddd, J=3.8, 9.2, 13.9 Hz), 6.47 (1H, s), 7.37 (1H, dd, J=2.6, 8.9 Hz), 7.50-7.70 (4H, m), 7.77-7.85 (2H, m), 8.81 (1H, brs)
ESI (LC-MS positive mode) m/z 407 (M+H).
The following compounds (Examples 106 and 107) were synthesized by a method similar to that of Example 20, using the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step B of Example 1 as a starting material.
Example 106
7-((R)-3-Hydroxypiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.58-1.80 (2H, m), 1.82-2.00 (2H, m), 2.18 (1H, d, J=6.9 Hz), 3.13-3.38 (3H, m), 3.51 (1H, dd, J=3.0, 12.2 Hz), 3.91-4.02 (1H, m), 6.45 (1H, s), 7.39 (1H, dd, J=2.3, 8.9 Hz), 7.43-7.70 (4H, m), 7.77-7.86 (2H, m), 8.50 (1H, brs)
ESI (LC-MS positive mode) m/z 389 (M+H).
Example 107
7-((S)-3-Hydroxypiperidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1H-NMR (270 MHz, CDCl3) δ (ppm): 1.60-1.80 (2H, m), 1.82-2.03 (2H, m), 2.32 (1H, d, J=6.6 Hz), 3.13-3.38 (3H, m), 3.52 (1H, dd, J=3.1, 12.0 Hz), 3.91-4.02 (1H, m), 6.45 (1H, s), 7.38 (1H, dd, J=2.6, 8.9 Hz), 7.44-7.70 (4H, m), 7.77-7.85 (2H, m), 8.69 (1H, brs)
ESI (LC-MS positive mode) m/z 389 (M+H).
The following compounds (Examples 108 to 111) were synthesized by a method similar to that in Step B of Example 1, using the 2,N,N-trimethyl-5-morpholin-4-ylbenzamide prepared in Step B of Example 80 as a starting material.
Example 108
7-Morpholin-4-yl-3-o-tolyl-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 2.41 (3H, s), 3.30 (4H, t, J=4.9 Hz), 3.91 (4H, t, J=4.9 Hz), 6.42. (1H, s), 7.28-7.37 (5H, m), 7.50 (1H, d, J=8.8 Hz), 7.81 (1H, d, J=2.9 Hz), 8.37 (1H, brs)
ESI (LC-MS positive mode) m/z 321 (M+H).
Example 109
7-Morpholin-4-yl-3-naphthalen-2-yl-2H-isoquinolin-1-one




1H-NMR (400 MHz, CDCl3) δ (ppm): 3.33 (4H, t, J=4.9 Hz), 3.91 (4H, t, J=4.9 Hz), 6.87 (1H, s), 7.37 (1H, dd, J=2.4, 8.8 Hz), 7.50-7.60 (3H, m), 7.74 (1H, dd, J=1.7, 8.5 Hz), 7.82 (1H, d, J=2.9 Hz), 7.85-7.93 (2H, m), 7.96 (1H, d, J=8.8 Hz), 8.06 (1H, s), 8.80 (1H, brs)
ESI (LC-MS positive mode) m/z 357 (M+H).
Example 110
3-(2-Dimethylaminophenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one




2-(N,N-dimethylamino)benzonitrile used in the reaction was prepared in accordance with known methods described in publications (for example, J. Org. Chem., Vol. 48, 2933-2935 (1983), etc.).
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.71 (6H, s), 3.31 (4H, t, J=4.8 Hz), 3.91 (4H, t, J=4.8 Hz), 6.70 (1H, s), 7.09-7.25 (2H, m), 7.33-7.37 (2H, m), 7.52-7.57 (2H, m), 7.81 (1H, s), 10.70 (1H, brs)
ESI (LC-MS positive mode) m/z 350 (M+H).
Example 111
7-Morpholin-4-yl-3-(2-pyrrolidin-1-ylphenyl)-2H-isoquinolin-1-one




2-(1-Pyrrolidinyl)benzonitrile used in the reaction was prepared in accordance with known methods described in publications (for example, US 2002/0193389, etc.).
1H-NMR (400 MHz, CDCl3) δ (ppm): 1.85-1.90 (4H, m), 3.04-3.08 (4H, m), 3.30 (4H, t, J=4.8 Hz), 3.90 (4H, t, J=4.8 Hz), 6.61 (1H, s), 6.96-7.02 (2H, m), 7.31-7.53 (4H, m), 7.80 (1H, s), 9.67 (1H, brs)
ESI (LC-MS positive mode) m/z 376 (M+H).
Example 112
7-((S)-2,3-Dihydroxypropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




132.6 μl (20 mmol) of (R)-glycidol was added to an ethanol solution (10 ml) containing 608.5 mg (2.0 mmol) of the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38. The obtained mixture was stirred under heating to reflux overnight. The residue obtained by concentration of the reaction solution was purified by silica gel column chromatography (methylene chloride:methanol=20:1), so as to obtain 514.3 mg (68%) of 7-((S)-2,3-dihydroxypropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a light yellow amorphous substance.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.95-3.05 (1H, m), 3.23-3.46 (3H, m), 3.64-3.73 (1H, m), 4.66 (1H, t, J=5.3 Hz), 4.84 (1H, d, J=5.0 Hz), 6.03 (1H, t, J=5.4 Hz), 6.29 (1H, s), 7.13 (1H, dd, J=2.0, 8.8 Hz), 7.24 (1H, d, J=2.0 Hz), 7.40 (1H, d, J=8.8 Hz), 7.58 (1H, d, J=7.5 Hz), 7.66 (1H, t, J=7.5 Hz), 7.75 (1H, t, J=7.5 Hz), 7.84 (1H, d, J=7.5 Hz), 11.24 (1H, brs)
ESI (LC-MS positive mode) m/z 379 (M+H).
Example 113
7-((R)-2,3-Dihydroxypropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 112, using the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.95-3.05 (1H, m), 3.20-3.46 (3H, m), 3.64-3.73 (1H, m), 4.60-4.70 (1H, m), 4.85 (1H, d, J=4.6 Hz), 6.00-6.08 (1H, m), 6.29 (1H, s), 7.13 (1H, dd, J=2.0, 8.3 Hz), 7.24 (1H, s), 7.40 (1H, d, J=8.3 Hz), 7.58 (1H, d, J=7.3 Hz), 7.66 (1H, t, J=7.3 Hz), 7.75 (1H, t, J=7.3 Hz), 7.84 (1H, d, J=7.3 Hz), 11.24 (1H, brs)
ESI (LC-MS positive mode) m/z 379 (M+H).
Example 114
7-Imidazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
Step A
7-Iodo-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




A 1 N sulfuric acid aqueous solution (30 ml) and 862.5 mg (12.5 mmol) of sodium nitrite were added at 0° C. to an acetic acid solution (15 ml) containing 1.52 g (5.0 mmol) of the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38. The obtained mixture was stirred for 30 minutes. Thereafter, 2.62 g (17.5 mmol) of sodium iodide and 952.3 mg (5.0 mmol) of copper iodide (I) were added to the reaction solution, and the obtained mixture was stirred at 80° C. for 1 hour. Thereafter, the reaction solution was cooled, and a saturated sodium bicarbonate aqueous solution was added thereto, followed by extraction with ethyl acetate. The extract was washed with a saturated saline solution, and was then dried over anhydrous sodium sulfate, followed by concentration. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:4 to 1:2), and was then washed with a sodium thiosulfate aqueous solution, so as to obtain 1.87 g (90%) of 7-iodo-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a light yellow solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.47 (1H, s), 7.31 (1H, d, J=8.6 Hz), 7.55 (1H, dd, J=1.7, 7.3 Hz), 7.59-7.73 (2H, m), 7.83 (1H, dd, J=2.0, 6.9 Hz), 7.96 (1H, dd, J=1.8, 8.4 Hz), 8.72 (1H, d, J=1.6 Hz), 9.06 (1H, brs)
ESI (LC-MS positive mode) m/z 416 (M+H).
Step B
7-Imidazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




10.4 mg (0.025 mmol) of the 7-iodo-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step A, 0.48 mg (0.0025 mmol) of copper iodide (I), 2.0 mg (0.03 mmol) of imidazole, and 11.1 mg (0.0525 mmol) of potassium phosphate were suspended in 0.25 ml of 1,4-dioxane. Then, 2.6 μl of N,N′-dimethylethylenediamine was added to the suspension, and the obtained mixture was then stirred at 110° C. overnight. Thereafter, the reaction solution was cooled to a room temperature, and a saturated ammonium chloride aqueous solution was then added to the reaction solution, followed by extraction with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and was then concentrated. The obtained residue was purified by silica gel column chromatography (methylene chloride:methanol=25:1 to 20:1), so as to obtain 8.3 mg (93%) of 7-imidazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a colorless viscous oily substance.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.58 (1H, s), 7.24 (1H, s), 7.41 (1H, s), 7.55-7.77 (5H, m), 7.84 (1H, dd, J=1.7, 7.6 Hz), 7.98 (1H, s), 8.35 (1H, d, J=2.0 Hz), 9.89 (1H, brs)
ESI (LC-MS positive mode) m/z 356 (M+H).
Example 115
7-[1,2,4]Triazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step B of Example 114, using the 7-iodo-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step A as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.58 (1H, s), 7.55-7.75 (4H, m), 7.80-7.88 (1H, m), 8.16 (1H, s), 8.17 (1H, dd, J=2.3H, 8.6 Hz), 8.64 (1H, d, J=2.3 Hz), 8.68 (1H, brs), 8.75 (1H, s)
ESI (LC-MS positive mode) m/z 357 (M+H).
Example 116
7-Tetrazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




17.5 μl (0.16 mmol) of trimethyl orthoformate and 9.8 mg (0.15 mmol) of sodium azide were added to 0.2 ml of an acetic acid solution containing the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38. The obtained mixture was stirred at 80° C. for 6 hours. Thereafter, the reaction solution was cooled to a room temperature, and water was then added to thereto, followed by extraction with ethyl acetate. The extract was washed with a saturated sodium bicarbonate aqueous solution, and was then dried over anhydrous sodium sulfate, followed by concentration. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=2:1), so as to obtain 29.8 mg (83%) of 7-tetrazol-1-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a colorless solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.62 (1H, s), 7.57-7.90 (5H, m), 8.19 (1H, dd, J=2.3, 8.6 Hz), 8.61 (1H, d, J=2.3 Hz), 9.24 (1H, s), 9.71 (1H, brs)
ESI (LC-MS positive mode) m/z 358 (M+H).
Example 117
7-((R)-3-Benzyloxy-2-methylaminopropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one; and
Example 118
7-((R)-4-Benzyloxymethyl-3-methylimidazolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




1.2 g (2.8 mmol) of a BOP reagent, 0.5 ml (3 mmol) of N,N-diisopropylethylamine, and 273 mg (2.8 mmol) of N,O-dimethylhydroxylamine hydrochloride were added to a dichloromethane solution containing 1 g (2.3 mmol) of Fmoc-Meser(Bzl) —OH. The obtained mixture was stirred at a room temperature over a day and a night. Thereafter, the reaction solution was successively washed with 1 N hydrochloric acid, a saturated sodium bicarbonate aqueous solution, and a saturated saline solution. The resultant was dried over anhydrous sodium sulfate, and the solvent was then distilled away under reduced pressure. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:2). 238 mg out of 850 mg of the obtained oily product was added to 2 ml of a THF solution, and the obtained solution was then added dropwise to 8 ml of a THF solution containing 10 mg (0.25 mmol) of aluminum lithium hydride at −78° C. The obtained mixture was stirred at −78° C. for 1.5 hours. Thereafter, 10 mg (0.25 mmol) of aluminum lithium hydride was further added to the reaction solution, and the obtained mixture was then stirred at −78° C. for 30 minutes. Thereafter, a saturated ammonium chloride aqueous solution was added to the reaction solution at −78° C., and the temperature of the mixture was increased to a room temperature. Thereafter, the mixture was filtrated with celite, and the filtrate was then extracted with dichloromethane. The extract was washed with a saturated saline solution, and was dried over anhydrous sodium sulfate, followed by concentration under reduced pressure. The generated oil product was dissolved in 5 ml of methanol without being purified. Thereafter, 100 mg (0.33 mmol) of 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one and 1 ml of acetic acid were added thereto. Thereafter, 135 mg (2.1 mmol) of sodium cyanoborohydride was added to the mixture under cooling on ice, and the temperature of the obtained mixture was increased to a room temperature, followed by stirring for 3 hours. Thereafter, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, and the mixture was then extracted with dichloromethane. The extract was dried over anhydrous sodium sulfate, and was then concentrated. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:2 to 2:1), so as to obtain a yellow foaming substance. This yellow foaming substance was dissolved in 5 ml of dichloromethane, and 1 ml of piperidine was then added to the solution. The obtained mixture was stirred at a room temperature. Four hours later, the reaction solution was concentrated, and 2 ml of 1 N hydrochloric acid and 2 ml of methanol were then added thereto, followed by stirring at 40° C. Six hours later, the reaction solution was neutralized with a 1 N sodium hydroxide aqueous solution under cooling on ice. A saturated sodium bicarbonate aqueous solution was added to the resultant, and the mixture was then extracted with dichloromethane. The extract was dried over anhydrous sodium sulfate, and was then concentrated. The obtained residue was purified by amino TLC used for preparative separation (Fuji Silysia Chemical Ltd., PLCO5; dichloromethane:methanol=20:1), so as to obtain 48 mg (31%) of 7-((R)-3-benzyloxy-2-methylaminopropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a yellow foaming substance, as well as 28 mg (17%) of 7-((R)-4-benzyloxymethyl-3-methylimidazolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a yellow foaming substance.
7-((R)-3-benzyloxy-2-methylaminopropylamino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one (Example 117)
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.43 (3H, s), 2.99-3.04 (1H, m), 3.18-3.27 (1H, m), 3.34-3.42 (1H, m), 3.54-3.66 (2H, m), 4.55 (2H, s), 4.73 (1H, brt), 6.42 (1H, s), 7.01 (1H, dd, J=2.31, 8.24 Hz), 7.31-7.39 (6H, m), 7.48 (1H, d, J=2.47 Hz), 7.52-7.67 (3H, m), 7.80 (1H, d, J=6.76 Hz)
ESI (LC-MS positive mode) m/z 482 (M+H).
7-((R)-4-benzyloxymethyl-3-methylimidazolidin-1-yl)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one (Example 118)
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.53 (3H, s), 3.05-3.10 (1H, m), 3.38-3.44 (1H, m), 3.57 (1H, dd, J=5.44, 9.73 Hz), 3.63-3.71 (2H, m), 3.86 (1H, d, J=4.78 Hz), 4.57 (1H, d, J=4.78 Hz), 4.60 (2H, s), 6.44 (1H, s), 6.91-6.95 (1H, m), 7.27-7.37 (5H, m), 7.43 (1H, d, J=8.90 Hz), 7.47-7.67 (3H, m), 7.80 (1H, d, J=7.42 Hz), 8.30 (1H, s)
ESI (LC-MS positive mode) m/z 494 (M+H).
Example 119
7-Methylamino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
Step A
7-Bromo-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




5-Bromo-2,N-dimethylbenzamide was prepared by a method similar to that in Step A of Example 1 from 2-bromo-5-methylbenzoic acid that can be prepared by the method disclosed in WO2002/083066 or U.S. Pat. No. 4,282,365. Using this compound as a starting material, 7-bromo-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one was synthesized by a method similar to that in Step B of Example 1.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.48 (1H, s), 7.45 (1H, d, J=8.58 Hz), 7.53-7.56 (1H, m), 7.61-7.72 (2H, m), 7.76-7.84 (2H, m), 8.53 (1H, d, J=1.98 Hz), 8.87 (1H, brs)
ESI (LC-MS positive mode) m/z 368 (M+H), 370 (M+H+2).
Step B
7-Methylamino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




30 mg (0.08 mmol) of the 7-bromo-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step A, 18.6 mg (0.098 mmol) of copper iodide (I), and 39.1 mg (0.204 mmol) of cesium acetate were suspended in 0.5 ml of dry dimethylformamide. Thereafter, 200 μl of a 40% methylamine-methanol solution was added to the suspension, and the obtained mixture was then stirred at 100° C. overnight. Thereafter, water was added to the reaction solution, and the mixture was then extracted with methylene chloride. The extract was washed with a saturated saline solution, and was then dried over anhydrous magnesium sulfate. The extract was concentrated. The obtained residue was purified by silica gel column chromatography (methylene chloride:methanol=100:1), so as to obtain 15.4 mg (61%) of 7-methylamino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one.
1H-NMR (270 MHz, CDCl3) δ (ppm): 1.25 (1H, s), 2.98 (3H, s), 6.44 (1H, s), 7.02 (1H, dd, J=2.6, 8.6 Hz), 7.40 (1H, d, J=8.6 Hz), 7.50-7.65 (4H, m), 7.80 (1H, d, J=7.9 Hz), 8.29 (1H, m)
ESI (LC-MS positive mode) m/z 319 (M+H).
The following compounds (Examples 120 to 130) were synthesized by a method similar to that of Example 57, using the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38 as a starting material.
Example 120
Propyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.00 (3H, t, J=7.2 Hz), 1.58-1.78 (2H, m), 4.17 (2H, t, J=6.8 Hz), 6.48 (1H, s), 6.96-7.00 (1H, m), 7.54-7.69 (4H, m), 7.82 (1H, d, J=7.2 Hz), 8.05-8.30 (2H, m), 8.56 (1H, brs)
ESI (LC-MS positive mode) m/z 391 (M+H).
Example 121
Isopropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (400 MHz, CDCl3) δ (ppm): 1.34 (3H, d, J=6.4 Hz), 1.37 (3H, d, J=6.4 Hz), 5.03-5.09 (1H, m), 6.48 (1H, s), 6.75-6.85 (1H, m), 7.52-7.69 (4H, m), 7.82 (1H, d, J=8.0 Hz), 8.09 (1H, d, J=2.4 Hz), 8.12 (1H, brs), 8.41 (1H, brs)
ESI (LC-MS positive mode) m/z 391 (M+H).
Example 122
Isobutyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, CDCl3) δ (ppm): 0.99 (6H, d, J=6.6 Hz), 1.95-2.06 (1H, m), 4.00 (2H, d, J=6.6 Hz), 6.49 (1H, s), 6.93-7.02 (1H, m), 7.55-7.70 (4H, m), 7.82 (1H, d, J=7.3 Hz), 8.09-8.20 (2H, m), 8.53 (1H, brs)
ESI (LC-MS positive mode) m/z 405 (M+H).
Example 123
Pentyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, CDCl3) δ (ppm): 0.92 (3H, t, J=6.60 Hz), 1.35-1.38 (4H, m), 1.65-1.72 (2H, m), 4.19 (2H, t, J=6.60 Hz), 6.49 (1H, s), 7.11 (1H, s), 7.56 (2H, d, J=8.58 Hz), 7.60-7.70 (2H, m), 7.82 (1H, d, J=7.92 Hz), 8.11-8.16 (2H, m), 8.80 (1H, brs)
EI-MS m/z 418 (M+).
Example 124
Benzyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, CDCl3) δ (ppm): 5.23 (2H, s), 6.49 (1H, s), 7.31-7.43 (6H, m), 7.52-7.69 (4H, m), 7.81 (1H, d, J=7.26 Hz), 8.10-8.20 (2H, m), 8.82 (1H, brs)
EI-MS m/z 438 (M+).
Example 125
Allyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (400 MHz, CDCl3) δ (ppm): 4.70-4.73 (2H, m), 5.29 (1H, d, J=10.4 Hz), 5.39 (1H, d, J=16.0 Hz), 5.95-6.05 (1H, m), 6.49 (1H, s), 6.97-7.01 (1H, m), 7.54-7.69 (4H, m), 7.82 (1H, d, J=8.0 Hz), 8.05-8.20 (2H, m), 8.43 (1H, brs)
ESI (LC-MS positive mode) m/z 389 (M+H).
Example 126
But-2-ynyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.86 (3H, s), 4.77 (2H, s), 6.43 (1H, s), 7.62-7.81 (5H, m), 7.87 (1H, d, J=7.9 Hz), 8.37 (1H, s), 10.14 (1H, s), 11.53 (1H, brs)
ESI (LC-MS positive mode) m/z 401 (M+H).
Example 127
2-(2-Methoxyethoxy)ethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, CDCl3) δ (ppm): 3.38 (3H, s), 3.55-3.58 (2H, m), 3.66-3.69 (2H, m), 3.76-3.79 (2H, m), 4.36-4.39 (2H, m), 6.49 (1H, s), 7.33 (1H, s), 7.55 (2H, d, J=8.57 Hz), 7.60-7.70 (2H, m), 7.81 (1H, d, J=7.25 Hz), 8.12 (1H, brs), 8.14 (1H, s), 8.78 (1H, brs)
EI-MS m/z 450 (M+).
Example 128
3-Methoxy-2,2-dimethylpropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (400 MHz, CDCl3) δ (ppm): 0.98 (6H, s), 3.19 (2H, s), 3.33 (3H, s), 4.04 (2H, s), 6.49 (1H, s), 7.10-7.20 (1H, m), 7.55-7.69 (4H, m), 7.82 (1H, d, J=7.2 Hz), 8.10-8.20 (2H, m), 8.61 (1H, brs)
ESI (LC-MS positive mode) m/z 449 (M+H).
Example 129
2-Methoxyethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.30 (3H, s), 3.59 (2H, t, J=4.6 Hz), 4.25 (2H, t, J=4.6 Hz), 6.42 (1H, s), 7.60-7.88 (6H, m), 8.40 (1H, s), 10.10 (1H, s), 11.51 (1H, s)
ESI (LC-MS positive mode) m/z 407 (M+H).
Example 130
2-Benzyloxyethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (400 MHz, CDCl3) δ (ppm): 3.75 (2H, t, J=4.7 Hz), 4.39 (2H, t, J=4.7 Hz), 4.60 (2H, s), 6.48 (1H, s), 7.02-7.12 (1H, m), 7.29-7.37 (5H, m), 7.52-7.69 (4H, m), 7.82 (1H, d, J=7.2 Hz), 8.05-8.15 (2H, m), 8.49 (1H, brs)
ESI (LC-MS positive mode) m/z 483 (M+H).
Example 131
2-Hydroxyethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




4.5 mg of 10% Pd/C was added to a methanol solution (5 ml) containing 44.9 mg (0.093 mmol) of 2-benzyloxyethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate obtained in Example 130. The obtained mixture was intensively stirred under a hydrogen atmosphere at a room temperature for 2 hours 20 minutes. Thereafter, insoluble matters were removed by filtration, and the filtrate was then concentrated. The obtained residue was purified by silica gel column chromatography (ethyl acetate), so as to obtain 33 mg (90%) of 2-hydroxyethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate.
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.68-2.78 (1H, m), 3.83-3.93 (2H, m), 4.33 (2H, t, J=4.6 Hz), 6.51 (1H, s), 7.53-7.67 (5H, m), 7.79 (1H, d, J=7.3 Hz), 8.14-8.24 (2H, m), 8.94 (1H, brs)
ESI (LC-MS positive mode) m/z 393 (M+H).
Example 132
(R)-2,3-Bisbenzyloxypropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




A mixture consisting of 0.50 ml (1.98 mmol) of (S)-(−)-1,2-dibenzylglycerol and 0.69 ml (3.96 mmol) of N,N-diisopropylethylamine was dissolved in 5 ml of dichloromethane. The obtained solution was added dropwise to 5 ml of a dichloromethane solution containing 294 mg (0.99 mmol) of triphosgene under cooling on ice. The obtained mixture was stirred at a room temperature for 30 minutes. Thereafter, the reaction solution was concentrated, and the concentrate was then dissolved in 5 ml of dichloromethane, so as to obtain a dichloromethane solution of (R)-2,3-bis-benzyloxy-propyl chloroformate (1.98 mmol/5 ml).
A mixture consisting of 100 mg (0.33 mmol) of the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Example 38 and 0.29 ml (1.65 mmol) of N,N-diisopropylethylamine was dissolved in 3 ml of dichloromethane, and 2.5 ml of the aforementioned chloroformate solution was then added thereto under cooling on ice. The obtained mixture was stirred at a room temperature for 20 hours. Thereafter, the reaction solution was poured into a saturated ammonium chloride aqueous solution, followed by extraction with ethyl acetate. The extract was washed with a saturated saline solution, and was then dried over anhydrous sodium sulfate, followed by concentration. The obtained residue was purified by silica gel chromatography (dichloromethane:methanol=100:1), so as to obtain 49 mg (25%) of (R)-2,3-bisbenzyloxypropyl [1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate in the form of a light yellow oily substance.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.60 (2H, ddd, J=12.0, 10.1, 5.3 Hz), 3.84 (1H, m), 4.27 (1H, dd, J=11.6, 5.3 Hz), 4.38 (1H, dd, J=11.6, 4.0 Hz), 4.50 (2H, s), 4.63 (2H, s), 6.48 (1H, s), 7.23-7.33 (11H, m), 7.45-7.60 (4H, m), 7.74 (1H, d, J=8.2 Hz), 7.93 (1H, s), 8.17 (1H, brs), 9.72 (1H, brs)
ESI (LC-MS positive mode) m/z 603 (M+H).
The following compounds (Examples 133-137) were synthesized by a method similar to that of Example 132, using the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one and a suitable alcohol or thiol as starting materials.
Example 133
2-Benzyloxy-1-benzyloxymethylethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.71 (4H, d, J=5.0 Hz), 4.49 (2H, d, J=12.0 Hz), 4.54 (2H, d, J=12.2 Hz), 5.20 (1H, dt, J=5.0, 5.0 Hz), 6.45 (1H, s), 7.24-7.31 (10H, m), 7.50-7.63 (4H, m), 7.75 (1H, d, J=8.2 Hz), 7.83 (1H, brs), 8.12 (1H, d, J=2.3 Hz), 8.17 (1H, d, J=8.4 Hz), 9.89 (1H, brs)
ESI (LC-MS positive mode) m/z 603 (M+H).
Example 134
Cyclohexylmethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 0.97-1.25 (6H, m), 1.64-1.76 (5H, m), 3.93 (2H, d, J=6.4 Hz), 6.40 (1H, s), 7.58-7.86 (6H, m), 8.38 (1H, d, J=2.3 Hz), 9.92 (1H, s), 11.50 (1H, s)
ESI (LC-MS positive mode) m/z 445 (M+H).
Example 135
Cyclohexyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.15-1.99 (10H, m), 4.67 (1H, m), 6.41 (1H, s), 7.59-7.88 (6H, m), 8.40 (1H, d, J=2.2 Hz), 9.90 (1H, s), 11.48 (1H, s)
ESI (LC-MS positive mode) m/z 431 (M+H).
Example 136
Furan-3-ylmethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 5.06 (2H, s), 6.41 (1H, s), 6.60 (1H, s), 7.59-7.87 (9H, m), 8.40 (1H, d, J=2.3 Hz), 10.0 (1H, brs)
ESI (LC-MS positive mode) m/z 429 (M+H).
Example 137
S-Ethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]thiocarbamate




1H-NMR (270 MHz, DMSO-d6) δ (ppm): 1.29 (3H, t, J=7.3 Hz), 2.92 (2H, dd, J=14.5, 7.3 Hz), 6.44 (1H, s), 7.62-7.89 (6H, m), 8.48 (1H, d, J=2.3 Hz), 10.60 (1H, s), 11.55 (1H, s)
ESI (LC-MS positive mode) m/z 393 (M+H).
Example 138
(R)-2,3-Dihydroxypropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




A mixture consisting of 26 mg (0.043 mmol) of (R)-2,3-bisbenzyloxypropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate synthesized in Example 132; 5 mg (0.036 mmol) of palladium hydroxide; and 0.2 ml (3.49 mmol) of acetic acid, was suspended in 3 ml of ethanol, and the obtained suspension was then stirred under a hydrogen atmosphere for 2 hours. Thereafter, the reaction solution was filtrated with celite, and was then concentrated. The obtained residue was purified by silica gel chromatography (dichloromethane:methanol=10:1), so as to obtain 18 mg (100%) of (R)-2,3-dihydroxypropyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate in the form of a light yellow oily substance.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.42 (2H, m), 3.73 (1H, dt, J=5.0, 5.0 Hz), 4.03 (1H, dd, J=11.0, 6.4 Hz), 4.17 (1H, dd, 11.0, 4.2 Hz), 5.40 (2H, brs), 6.41 (1H, s), 7.59-7.88 (6H, m), 8.41 (1H, s), 10.04 (1H, s), 11.50 (1H, brs)
ESI (LC-MS positive mode) m/z 423 (M+H).
Example 139
2-Hydroxy-1-hydroxymethylethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




The above compound was synthesized by a method similar to that of Example 138, using the 2-benzyloxy-1-benzyloxymethylethyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate synthesized in Example 133 as a starting material.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.58 (2H, dd, J=11.6, 5.5 Hz), 3.63 (2H, dd, J=11.6, 5.5 Hz), 4.77 (1H, dt, J=5.5, 5.5 Hz), 5.70 (2H, brs), 6.41 (1H, s), 7.59-7.88 (6H, m), 8.42 (1H, s), 10.02 (1H, s) 11.50 (1H, brs)
ESI (LC-MS positive mode) m/z 423 (M+H).
Example 140
Ethyl[3-(2-morpholin-4-ylphenyl)-1-oxo-1,2-dihydroisoquinolin-7-yl]carbamate
Step A
7-Amino-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 38, using the 7-chloro-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one synthesized in Step A of Example 97 as a raw material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.95-2.99 (4H, m), 3.84-3.90 (4H, m), 4.00 (2H, brs), 6.67 (1H, s), 7.05 (1H, dd, J=2.0, 7.1 Hz), 7.10-7.20 (2H, m), 7.35-7.45 (2H, m), 7.55-7.59 (1H, m), 7.64 (1H, d, J=2.4 Hz), 10.86 (1H, brs)
ESI (LC-MS positive mode) m/z 322 (M+H).
Step B
Ethyl[3-(2-morpholin-4-ylphenyl)-1-oxo-1,2-dihydroisoquinolin-7-yl]carbamate




The above compound was synthesized by a method similar to that of Example 57, using the 7-amino-3-(2-morpholin-4-ylphenyl)-2H-isoquinolin-1-one obtained in Step A as a starting material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 1.35 (3H, t, J=7.2 Hz), 2.98 (4H, t, J=4.4 Hz), 3.88 (4H, t, J=4.4 Hz), 4.27 (2H, q, J=7.2 Hz), 6.72 (1H, s), 6.81 (1H, brs), 6.99-7.25 (2H, m), 7.37-7.43 (1H, m), 7.56-7.63 (2H, m), 8.04 (1H, brs), 8.20 (1H, bs), 10.95 (1H, brs)
ESI (LC-MS positive mode) m/z 394 (M+H).
Example 141
Ethyl[3-(4-fluoro-2-trifluoromethylphenyl)-1-oxo-1,2-dihydroisoquinolin-7-yl]carbamate




The above compound was synthesized by a method similar to that of Example 140.
1H-NMR (400 MHz, CDCl3) δ (ppm): 1.35 (3H, t, J=6.8 Hz), 4.27 (2H, q, J=6.8 Hz), 6.46 (1H, s), 6.85 (1H, brs), 7.35-7.39 (1H, m), 7.51-7.57 (3H, m), 8.09 (1H, brs), 8.17 (1H, brs), 8.45 (1H, brs)
ESI (LC-MS positive mode) m/z 395 (M+H).
Example 142
Ethyl[1-oxo-3-(2-trifluoromethoxyphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




The above compound was synthesized by a method similar to that of Example 141.
1H-NMR (270 MHz, CDCl3) δ (ppm): 1.35 (3H, t, J=7.1 Hz), 4.28 (2H, q, J=7.1 Hz), 6.66 (1H, s), 6.83-6.93 (1H, m), 7.40-7.61 (5H, m), 8.08-8.13 (2H, m), 8.64 (1H, brs)
ESI (LC-MS positive mode) m/z 393 (M+H).
Example 143
Ethyl methyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




The above compound was synthesized by a method similar to that of Example 57, using the 7-methylamino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step B of Example 119 as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 1.27 (3H, t, J=7.1 Hz), 3.41 (3H, s), 4.22 (2H, q, J=7.1 Hz), 6.52 (1H, s), 7.55-7.72 (5H, m), 7.83 (1H, dd, J=1.7, 8.1 Hz), 8.20 (1H, d, J=2.3 Hz), 8.72 (1H, brs)
ESI (LC-MS positive mode) m/z 391 (M+H).
Example 144
2-Hydroxyethyl methyl[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]carbamate




The above compound was synthesized by applying a method similar to that of Example 130 and then applying a method similar to that of Example 131, using the 7-methylamino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step B of Example 119 as a starting material.
1H-NMR (500 MHz, CDCl3) δ (ppm): 2.47 (1H, brs), 3.43 (3H, s), 3.78-3.88 (2H, m), 4.29-4.33 (2H, m), 6.52 (1H, s), 7.53-7.60 (2H, m), 7.63-7.71 (3H, m), 7.82-7.84 (1H, m), 8.26 (1H, d, J=1.81 Hz), 8.72 (1H, brs)
EI-MS m/z 406 (M+).
Example 145
3-(4-Hydroxy-2-methylphenyl)-7-(3-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one




0.070 ml (0.070 mmol) of a 1 M boron tribromide dichloromethane solution was added at 0° C. to a dichloromethane solution (0.5 ml) containing 17 mg (0.0466 mmol) of the 7-(3-hydroxypiperidin-1-yl)-3-(4-methoxy-2-methylphenyl)-2H-isoquinolin-1-one obtained in Example 90. The obtained mixture was stirred at the same above temperature for 30 minutes. Thereafter, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, and the mixture was then extracted with dichloromethane/methanol (5:1). The extract was concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (dichloromethane:methanol=20:1 to 10:1), so as to obtain 10 mg (61%) of 3-(4-hydroxy-2-methylphenyl)-7-(3-hydroxypiperidin-1-yl)-2H-isoquinolin-1-one in the form of a light brown solid.
1H-NMR (270 MHz, CD3OD) δ (ppm): 1.30-1.43 (1H, m), 1.52-1.66 (1H, m), 1.77-1.95 (2H, m), 2.17 (3H, s), 2.70 (1H, dd, J=11.5, 8.5 Hz), 2.76-2.85 (1H, m), 3.41-3.50 (1H, m), 3.60-3.76 (2H, m), 6.36 (1H, s), 6.60 (1H, dd, J=8.5, 2.5 Hz), 6.63 (1H, d, J=2.5 Hz), 7.07 (1H, d, J=8.5 Hz), 7.38 (1H, dd, J=9.0, 2.5 Hz), 7.44 (1H, d, J=9.0 Hz), 7.61 (1H, d, J=2.5 Hz)
ESI (LC-MS positive mode) m/z 351 (M+H).
Example 146
3-(2-Chlorophenyl)-7-morpholin-4-yl-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step B of Example 1, using the 2,N,N-trimethyl-5-morpholin-4-ylbenzamide prepared in Step B of Example 80 as a raw material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 3.32 (4H, m), 3.91 (4H, m), 6.57 (1H, s), 7.34-7.41 (3H, m), 7.48-7.53 (3H, m), 7.81 (1H, d, J=2.9 Hz), 8.49 (1H, brs)
ESI (LC-MS positive mode) m/z 341 (M+H).
Example 147
2-Hydroxy-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide




Dichloromethane was added to 5 ml of a whitish methanol solution containing the 2-benzyloxy-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide prepared in Example 60, until the solution became transparent. Thereafter, 10 mg of 10% Pd—C was added thereto, and the obtained mixture was then stirred under a hydrogen atmosphere for 8 hours. Thereafter, the reaction solution was filtrated with celite, and the filtrate was then concentrated, so as to obtain 7.8 mg (46%) of 2-hydroxy-N-(1-oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide in the form of a yellow solid.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 4.04 (2H, s), 5.81 (1H, brs), 6.68 (1H, s), 7.44-7.52 (2H, m), 7.67 (1H, d, J=8.58 Hz), 7.77-7.80 (2H, m), 7.97 (1H, dd, J=1.98, 8.58 Hz), 8.68 (1H, d, J=2.31 Hz), 11.46 (1H, m)
EI-MS m/z 293 (M−H+).
Example 148
3-Phenyl-7-((2S,3R)-2,3,4-trihydroxybutylamino)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 41, using the 7-amino-3-phenyl-2H-isoquinolin-1-one prepared in Example 39 as a raw material.
1H-NMR (270 MHz, CD3OD) δ (ppm): 3.24 (1H, dd, J=7.59, 12.87 Hz), 3.57-3.64 (2H, m), 3.68 (1H, d, J=5.94 Hz), 3.77-3.86 (2H, m), 6.84 (1H, s), 7.19 (1H, dd, J=2.31, 8.58 Hz), 7.37-7.52 (5H, m), 7.66-7.70 (2H, m)
FAB-MS m/z 341 (M+H).
Example 149
7-(2,2-Dimethylhydrazino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized via a reaction similar to that of Example 4, using the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step B of Example 1 as a raw material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.58 (6H, s), 4.54 (1H, s), 6.44 (1H, s), 7.32 (1H, dd, J=2.5, 8.6 Hz), 7.44 (1H, d, J=8.6 Hz), 7.50-7.68 (3H, m), 7.76-7.83 (2H, m), 8.58 (1H, brs)
ESI (LC-MS positive mode) m/z 348 (M+H).
Example 150
3-(2-Trifluoromethylphenyl)-7-(1,2,2-trimethylhydrazino)-2H-isoquinolin-1-one




0.1 ml of acetic acid, 26.2 μl of a 37% formalin aqueous solution, and 25.3 mg (0.403 mmol) of sodium cyanoborohydride were added to 1 ml of a methanol solution containing 28 mg of the 7-(2,2-dimethylhydrazino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 149. The obtained mixture was stirred at a room temperature overnight. Thereafter, a saturated sodium bicarbonate aqueous solution was added to the reaction solution. The mixture was extracted with ethyl acetate, and was then dried over anhydrous sodium sulfate. The extract was concentrated. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:2 to 2:1), so as to obtain 25.5 mg (88%) of 3-(2-trifluoromethylphenyl)-7-(1,2,2-trimethylhydrazino)-2H-isoquinolin-1-one in the form of a light yellow solid.
1H-NMR (270 MHz, CDCl3) δ (ppm): 2.52 (6H, s), 2.92 (3H, s), 6.46 (1H, s), 7.46 (1H, d, J=8.9 Hz), 7.50-7.67 (4H, m), 7.72 (1H, dd, J=2.6, 8.9 Hz), 7.76-7.83 (1H, m), 8.33 (1H, brs)
ESI (LC-MS positive mode) m/z 362 (M+H).
Example 151
7-(N-Benzhydrylidenehydrazino)-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized via a reaction similar to that of Example 4, using the 7-chloro-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one prepared in Step B of Example 1 as a raw material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 6.47 (1H, s), 7.30-7.40 (5H, m), 7.47-7.70 (9H, m), 7.71-7.84 (4H, m), 8.36 (1H, brs)
ESI (LC-MS positive mode) m/z 484 (M+H).
Example 152
1-Methyl-3-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]urea




0.5 ml of a 1,4-dioxane solution contained 20.8 mg (0.05 mmol) of the 7-iodo-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step A of Example 114; 2.2 mg (0.0025 mmol) of tris(dibenzylideneacetone)dipalladium; 4.2 mg (0.0075 mmol) of 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene; 22.8 mg (0.07 mmol) of cesium carbonate, and 4.44 mg (0.06 mmol) of methylurea, was stirred at 110° C. overnight. Thereafter, the reaction solution was cooled to a room temperature, and a saturated ammonium chloride aqueous solution was then added thereto. The mixture was extracted with ethyl acetate, and the extract was then dried over anhydrous sodium sulfate. The extract was concentrated, and the obtained residue was then purified by thin-layer chromatography (methylene chloride:methanol=20:1), so as to obtain 1.7 mg (9%) of 1-methyl-3-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]urea in the form of a colorless solid.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.67 (3H, d, J=4.6 Hz), 6.25-6.35 (1H, m), 6.38 (1H, s), 7.54 (1H, d, J=8.6 Hz), 7.57-7.90 (5H, m), 8.28 (1H, d, J=2.3 Hz), 9.04 (1H, brs), 11.40 (1H, brs)
ESI (LC-MS positive mode) m/z 362 (M+H).
Example 153
N-Methyl-N-[1-oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]formamide




The above compound was synthesized by a method similar to that of Example 57, using the 7-methylamino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Step B of Example 119 as a starting material.
1H-NMR (270 MHz, CDCl3) δ (ppm): 3.41 (3H, s), 6.54 (1H, s), 7.47-7.74 (5H, m), 7.79-7.88 (1H, m), 8.14 (1H, d, J=2.6 Hz), 8.63 (1H, s), 9.37 (1H, brs)
ESI (LC-MS positive mode) m/z 347 (M+H).
Example 154
N-[1-Oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]benzamide




The above compound was synthesized by a method similar to that of Example 57, using the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38 as a starting material.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 6.48 (1H, s), 7.54-7.82 (8H, m), 7.89 (1H, d, J=7.8 Hz), 8.05 (2H, dd, J=7.8, 2.1 Hz), 8.75 (1H, d, J=2.1 Hz), 10.59 (1H, s), 11.57 (1H, s)
ESI (LC-MS positive mode) m/z 409 (M+H).
Example 155
N-[1-Oxo-3-(2-trifluoromethylphenyl)-1,2-dihydroisoquinolin-7-yl]-2-thiophen-2-ylacetamide




The above compound was synthesized by a method similar to that of Example 57, using the 7-amino-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one obtained in Example 38 as a starting material.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.95 (2H, s), 6.45 (1H, s), 7.00-7.04 (2H, m), 7.42 (1H, dd, J=5.0, 1.4 Hz), 7.62-7.80 (4H, m), 7.86 (1H, d, J=8.7 Hz), 7.93 (1H, dd, J=8.7, 2.1 Hz), 8.55 (1H, d, J=2.1 Hz), 10.55 (1H, s), 11.54 (1H, s)
ESI (LC-MS positive mode) m/z 429 (M+H).
Example 156
N-(1-Oxo-3-phenyl-1,2-dihydroisoquinolin-7-yl)acetamide




The above compound was synthesized by a method similar to that of Example 57, using the 7-amino-3-phenyl-2H-isoquinolin-1-one obtained in Example 39 as a starting material.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 2.10 (3H, s), 6.87 (1H, s), 7.40-7.52 (3H, m), 7.65 (1H, d, J=8.4 Hz), 7.78 (2H, d, J=8.4 Hz), 7.86 (1H, d, J=8.4 Hz), 8.52 (1H, s), 10.22 (1H, s), 11.43 (1H, s)
EIMS m/z 278 (M+).
Example 157
6-Chloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
Step A
2,N-Dimethyl-5-morpholin-4-ylbenzamide




The above compound was synthesized by a method similar to that in Step B of Example 80, using the 5-chloro-2, N-dimethylbenzamide obtained in Step A of Example 1 as a starting material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.34 (3H, s), 2.99 (3H, d, J=5.2 Hz), 3.11 (4H, t, J=4.8 Hz), 3.85 (4H, t, J=4.6 Hz), 5.71 (1H, brs), 6.87 (1H, dd, J=2.4, 8.4 Hz), 6.91 (1H, d, J=3.2 Hz), 7.11 (1H, d, J=8.4 Hz)
ESI (LC-MS positive mode) m/z 235 (M+H).
Step B
4-Chloro-2,N-dimethyl-5-morpholin-4-ylbenzamide and 2-chloro-6,N-dimethyl-3-morpholin-4-ylbenzamide




100 mg (0.427 mmol) of 2,N-dimethyl-5-morpholin-4-ylbenzamide prepared in Step A was dissolved in 3 ml of N,N-dimethylformamide, and thereafter, 63 mg (0.47 mmol) of N-chlorosuccinimide was added thereto under cooling on ice. The obtained mixture was stirred at 50° C. for 1 hour. Thereafter, the reaction solution was concentrated, and water was then added thereto. The mixture was extracted with ethyl acetate. The extract was washed with water and a saturated saline solution, and was then dried over anhydrous sodium sulfate. The extract was concentrated, and the obtained residue was then purified by silica gel column chromatography (ethyl acetate:methylene chloride=1:5), so as to obtain 54.5 mg (47%) of 4-chloro-2,N-dimethyl-5-morpholin-4-ylbenzamide in the form of a colorless solid, as well as 46 mg (40%) of 2-chloro-6,N-dimethyl-3-morpholin-4-ylbenzamide in the form of a colorless solid.
4-Chloro-2,N-dimethyl-5-morpholin-4-ylbenzamide
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.36 (3H, s), 2.97-3.03 (7H, m), 3.87 (4H, t, J=4.4 Hz), 5.72 (1H, brs), 7.03 (1H, s), 7.23 (1H, s)
ESI (LC-MS positive mode) m/z 269 (M+H).
2-Chloro-6,N-dimethyl-3-morpholin-4-ylbenzamide
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.28 (3H, s), 3.00 (4H, t, J=4.6 Hz), 3.04 (3H, d, J=4.8 Hz), 3.86 (4H, t, J=4.4 Hz), 5.64 (1H, brs), 6.96 (1H, d, J=8.4 Hz), 7.08 (1H, d, J=8.4 Hz)
ESI (LC-MS positive mode) m/z 269 (M+H).
Step C
6-Chloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




167 μl of a 1.8 M lithium diisopropylamide THF solution (0.3 mmol) was diluted with 1.5 ml of THF. Thereafter, 1 ml of a THF solution containing 27 mg (0.10 mol) of the 4-chloro-2,N-dimethyl-5-morpholin-4-ylbenzamide prepared in Step B was added dropwise to the diluted solution at −78° C. Thereafter, 1 ml of a THF solution containing 17 mg (0.10 mmol) of 2-(trifluoromethyl)benzonitrile was further added thereto, and the obtained mixture was then stirred at −78° C. for 1 hour. The temperature of the reaction solution was increased to 0° C., and a saturated ammonium chloride aqueous solution was added thereto, followed by extraction with ethyl acetate. The extract was washed with a saturated saline solution, and was then dried over anhydrous sodium sulfate, followed by concentration under reduced pressure. Thereafter, the obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:2 to 1:1), so as to obtain 5.4 mg (13%) of 6-chloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one in the form of a colorless solid.
1H-NMR (400 MHz, CDCl3) δ (ppm): 3.17 (4H, t, J=4.6 Hz), 3.92 (4H, t, J=4.6 Hz), 6.40 (1H, s), 7.53 (1H, d, J=7.6 Hz), 7.62-7.70 (3H, m), 7.82 (1H, d, J=7.6 Hz), 7.99 (1H, s), 8.62 (1H, brs)
ESI (LC-MS positive mode) m/z 409 (M+H).
Example 158
8-Chloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step C of Example 157, using the 2-chloro-6, N-dimethyl-3-morpholin-4-ylbenzamide obtained in Step B of Example 157 as a raw material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 3.11 (4H, t, J=4.4 Hz), 3.93 (4H, t, J=4.4 Hz), 6.42 (1H, s), 7.40-7.47 (2H, m), 7.56 (1H, d, J=7.6 Hz), 7.61 (1H, t, J=7.6 Hz), 7.68 (1H, t, J=7.4 Hz), 7.81 (1H, d, J=8.0 Hz), 9.00 (1H, brs)
ESI (LC-MS positive mode) m/z 409 (M+H).
Example 159
6,8-Dichloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
Step A
2,4-Dichloro-6,N-dimethyl-3-morpholin-4-ylbenzamide




70 mg (0.30 mmol) of the 2,N-dimethyl-5-morpholin-4-ylbenzamide prepared in Step A of Example 157 was dissolved in 2 ml of N,N-dimethylformamide, and thereafter, 60 mg (0.45 mmol) of N-chlorosuccinimide was added thereto under cooling on ice. The obtained mixture was stirred at 0° C. for 1.5 hours, then at a room temperature for 0.5 hours, and then at 50° C. for 3 hours. Thereafter, the reaction solution was concentrated, and water was then added thereto, followed by extraction with ethyl acetate. The extract was washed with water and a saturated saline solution, and was then dried over anhydrous sodium sulfate. The extract was concentrated, and the obtained residue was then purified by silica gel column chromatography (ethyl acetate:methylene chloride=1:5), so as to obtain 17.3 mg (19%) of 2,4-dichloro-6,N-dimethyl-3-morpholin-4-ylbenzamide in the form of a colorless solid.
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.27 (3H, s), 3.03 (3H, d, J=4.8 Hz), 3.11-3.24 (4H, m), 3.81 (4H, t, J=4.6 Hz), 5.67 (1H, brs), 7.14 (1H, s)
ESI (LC-MS positive mode) m/z 303 (M+H).
Step B
6,8-Dichloro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step C of Example 157, using the 2,4-dichloro-6,N-dimethyl-3-morpholin-4-ylbenzamide obtained in Step A as a raw material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 3.15-3.18 (2H, m), 3.37-3.42 (2H, m), 3.83-3.91 (4H, m), 6.33 (1H, s), 7.49 (1H, s), 7.56 (1H, d, J=7.2 Hz), 7.62-7.71 (2H, m), 7.82 (1H, d, J=7.6 Hz), 9.39 (1H, brs)
ESI (LC-MS positive mode) m/z 444 (M+H).
Example 160
6-Fluoro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one
Step A
4-Fluoro-2,N,N-trimethyl-5-morpholin-4-ylbenzamide and 2-fluoro-6,N,N-trimethyl-3-morpholin-4-ylbenzamide




393 mg (1.10 mmol) of N,N′-difluoro-2,2′-bipyridinium bis(tetrafluoroborate) was added to 7 ml of an acetonitrile solution containing 458 mg (1.84 mmol) of the 2, N,N-trimethyl-5-morpholin-4-ylbenzamide obtained in Step B of Example 80 under cooling on ice. The obtained mixture was stirred at 0° C. for 1 hour, then at a room temperature for 1 hour, then at 50° C. for 1 hour, then at 80° C. for 2.5 days, and then under heating to reflux for 2 hours. Thereafter, 357 mg (1.0 mmol) of N,N′-difluoro-2,2′-bipyridinium bis(tetrafluoroborate) was further added to the reaction solution, and the obtained mixture was further stirred for 20 minutes. Thereafter, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, and the mixture was then extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate, and was then concentrated. The obtained residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:3 to 1:1), so as to obtain 25.8 mg (5.3%) of 4-fluoro-2,N,N-trimethyl-5-morpholin-4-ylbenzamide in the form of an oily substance, and also obtain 35.1 mg (7.2%) of 2-fluoro-6,N,N-trimethyl-3-morpholin-4-ylbenzamide in the form of an oily substance.
4-fluoro-2,N,N-trimethyl-5-morpholin-4-ylbenzamide
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.21 (3H, s), 2.84 (3H, s), 3.05 (4H, t, J=4.6 Hz), 3.12 (3H, s), 3.86 (4H, t, J=4.4 Hz), 6.75 (1H, d, J=8.8 Hz), 6.88 (1H, d, J=13.2 Hz)
ESI (LC-MS positive mode) m/z 267 (M+H).
2-fluoro-6,N,N-trimethyl-3-morpholin-4-ylbenzamide
1H-NMR (400 MHz, CDCl3) δ (ppm): 2.21 (3H, s), 2.92 (3H, s), 2.93-2.97 (2H, m), 3.11-3.32 (2H, m), 3.17 (3H, s), 3.81-3.90 (4H, m), 6.84 (1H, t, J=8.6 Hz), 6.92 (1H, d, J=8.4 Hz)
ESI (LC-MS positive mode) m/z 267 (M+H).
Step B
6-Fluoro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step C of Example 157, using the 4-fluoro-2, N,N-trimethyl-5-morpholin-4-ylbenzamide obtained in Step A as a raw material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 3.21 (4H, t, J=4.6 Hz), 3.92 (4H, t, J=4.8 Hz), 6.41 (1H, s), 7.21 (1H, d, J=12.8 Hz), 7.53 (1H, d, J=7.2 Hz), 7.60-7.69 (2H, m), 7.82 (1H, d, J=8.0 Hz), 7.90 (1H, d, J=7.2 Hz), 8.52 (1H, brs)
ESI (LC-MS positive mode) m/z 393 (M+H).
Example 161
8-Fluoro-7-morpholin-4-yl-3-(2-trifluoromethylphenyl)-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that in Step C of Example 157, using the 2-fluoro-6, N,N-trimethyl-3-morpholin-4-ylbenzamide obtained in Step A of Example 160 as a raw material.
1H-NMR (400 MHz, CDCl3) δ (ppm): 3.17-3.20 (4H, m), 3.89-3.91 (4H, m), 6.40 (1H, d, J=2.0 Hz), 7.27-7.36 (2H, m), 7.53 (1H, d, J=7.2 Hz), 7.59-7.68 (2H, m), 7.81 (1H, d, J=7.2 Hz), 8.40 (1H, brs)
ESI (LC-MS positive mode) m/z 393 (M+H).
Example 162
3-Furan-2-yl-7-morpholin-4-yl-2H-isoquinolin-1-one




The above compound was synthesized by a method similar to that of Example 97, using the 5-chloro-2, N,N-trimethylbenzamide prepared in Step A of Example 80 as a starting material.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.22 (4H, t, J=4.6 Hz), 3.77 (4H, t, J=4.6 Hz), 6.62-6.65 (1H, m), 6.88 (1H, s), 7.27 (1H, d, J=3.5 Hz), 7.45-7.64 (2H, m), 7.80 (1H, s), 11.38 (1H, brs)
ESI (LC-MS positive mode) m/z 297 (M+H).
Example 163
7-Morpholin-4-yl-3-pyridin-4-ylisoquinolin-1-one ditrifluoroacetate




The above compound was synthesized by a method similar to that of Example 97, using the 5-chloro-2, N,N-trimethylbenzamide prepared in Step A of Example 80 as a starting material.
1H-NMR (270 MHz, DMSO-d6) δ (ppm): 3.28 (4H, t, J=4.8 Hz), 3.77 (4H, t, J=4.8 Hz), 7.37 (1H, s), 7.51-7.58 (2H, m), 7.69 (1H, d, J=8.7 Hz), 8.10 (2H, d, J=5.4 Hz), 8.78 (2H, d, J=5.4 Hz), 11.60 (1H, brs)
ESI (LC-MS positive mode) m/z 308 (M+H−2TFA).
Example B-1
Test Example 1
[Measurement of Cell Growth Inhibitory Activity]
Several representative examples of the compound group of the present invention were measured in terms of cell growth inhibitory activity.
Cancer cell growth inhibitory activity was measured using Cell Counting Kit-8 manufactured by Dojindo Laboratories. The human colon cancer cell line HCT116 obtained from American Type Culture Collection (Virginia, U.S.A) was inoculated in a 96-well culture plate at a concentration of 2,000 cells/well. Thereafter, a certain concentration of compound was added thereto, and the obtained mixture was then cultured at 37° C. in 5% CO2 for 4 days. On the 4th day of the culture, a Cell Counting Kit-8 solution was added to the culture product, and absorbance (measurement wavelength: 450 nm; reference wavelength: 615 nm) was measured in accordance with protocols included with the kit. Thereafter, 50% growth inhibitory concentration (IC50) was calculated.
The results are shown in Table 6.










TABLE 6








Cell growth inhibitory




activity (HCT116)



Compound No.
IC50 (μM)



















 8
0.028



10
0.097



21
0.02



29
0.052



36
0.018



  41B
0.034



  43B
0.024



61
0.021










Test Example 2
[Measurement of Antitumor Effect]
A representative example of the compound group of the present invention was measured in terms of antitumor effect.
Such antitumor effect was examined, using a tumor-bearing mouse produced by transplanting the human colon cancer cell line HCT116 obtained from American Type Culture Collection (Virginia, U.S.A) into the inguinal subcutis of a BALB/c nude mouse purchased from Charles River Laboratories Japan, Inc. The purchased nude mouse was quarantined for 1 week. Thereafter, approximately 5×106 HCT116 cells were transplanted subcutaneously. When the size of a tumor thereof became about 200 mm3, the mouse was subjected to the present experiment.
Each compound was dissolved or suspended in a solution to be administered, and 0.5 ml of the solution was orally administered. Such administration was carried out twice in total, that is, on the initiation date of administration and 3 days after the administration. The antitumor effect was calculated as a tumor growth inhibition by comparing the solution administration group with a control group in terms of tumor growth.

Tumor growth inhibition(TGI)=(1−the tumor growth amount of agent-treated group/the tumor growth amount of control group)×100(%)

The results are shown in Table 7.










TABLE 7









Antitumor effect










Compound No.
Dose (mg/kg)
TGI (%) on day 7












8
12.5
96


10
50
91


61
200
73

## Claims

1. A compound represented by the following formula (I):



wherein,
Y1 and Y4 are independently selected from a hydrogen atom and a halogen atom,
either one of Y2 and Y3 represents —NR1R2, and the other represents a hydrogen atom or a halogen atom;
X represents an aryl group or a heteroaryl group, and the aryl group or heteroaryl group may be substituted with one or more substituents selected from Group A;
Group A consists of a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, an aryl group, a heteroaryl group, —OR11, and —NR12R13), a C2-7 alkenyl group (wherein the C2-7 alkenyl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group), a C2-7 alkynyl group (wherein the C2-7 alkynyl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group), a halogen atom, a hydroxyl group, an aryl group, a heteroaryl group, a cyano group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, which may be substituted with —OR11 or —NR12R13, an aryl group, an aryl C1-6 alkyl group, and a heteroaryl group), —S(O),R14 (wherein n represents an integer between 0 and 2), a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more groups selected from an aryl group, a heteroaryl group, —OR11, —NR12R13, and a halogen atom), a 4- to 7-membered hetero ring group (wherein the hetero ring group may be substituted with one or more substituents selected from Group D), an aryloxy group, a heteroaryloxy group, and a C2-6 alkylenedioxy group; wherein R11, R12, R13, and R14 are independently selected from a hydrogen atom, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, an amino group, a C1-6 alkylamino group, a di(C1-6 alkyl)amino group, an aryl group, and a heteroaryl group), an aryl group, and a heteroaryl group; or R12 and R13, together with nitrogen to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom;
R1 represents a hydrogen atom, or a C1-8 alkyl group that may be substituted with one or more substituents selected from Group B;
R2 represents a C1-8 alkyl group substituted with one or more substituents selected from Group B; or R2 represents —COOR3, —COR4, —COSR5, —CONR6R7, —NR22R23, —NR═CR24R25; or R1 and R2, together with a nitrogen atom to which they are bonded, may form a 4- to 10-membered hetero ring containing at least one nitrogen atom (wherein the hetero ring may be substituted with one or more substituents selected from Group C); wherein
R3 represents a hydrogen atom, a C1-8 alkyl group, a C2-7 alkenyl group, a C2-7 alkynyl group (wherein the alkyl group, alkenyl group, and alkynyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a hydroxyl group, a C1-6 alkoxy group, and a phenyl group), a C3-8 cycloalkyl group, an aryl group, and a heteroaryl group), a C3-8 cycloalkyl group, an aryl group, or a heteroaryl group;
R4 is selected from a hydrogen atom, a C1-8 alkyl group that is substituted with one or more R20s, 1-naphthyl group, 2-naphthyl group, and a heteroaryl group;
R5 is selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
R20 represents a hydroxyl group, a halogen atom, an aryl group, a heteroaryl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a halogen atom, an aryl group, and a heteroaryl group), an aryloxy group, a heteroaryloxy group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, an aryl group, an aryl C1-6 alkyl group, a heteroaryl group, and —COOR21), or a 4- to 7-membered hetero ring group containing at least one nitrogen atom (wherein the hetero ring group may be substituted with a C1-8 alkyl group);
R21 represents a C1-8 alkyl group, an aryl C1-6 alkyl group, or an aryl group;
R6 and R7 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
R22 and R23 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
R24 and R25 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
Group B consists of a halogen atom, a C1-6 alkylcarbonyl group, a C1-6 alkylaminocarbonyl group, a C1-6alkoxycarbonyl group, an aryl group (wherein the aryl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, a C1-8 haloalkyl group, a hydroxyl group, a C1-6 alkoxy group, and a C1-6 haloalkoxy group), a heteroaryl group, —OR31, and —NR32R33; wherein
R31, R32, and R33 are independently selected from a hydrogen atom, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, an aryl group, an amino group, a C1-6 alkylamino group, and a di(C1-6 alkyl)amino group), an aryl group, a heteroaryl group, and —COOR34; wherein R34 represents a C1-8 alkyl group, an aryl C1-6 alkyl group, or an aryl group; or
R32 and R33, together with a nitrogen atom to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom (wherein the hetero ring group may be substituted with one or more groups selected from Group D);
Group C consists of an aryl group, a heteroaryl group, a C1-6 alkylcarbonyl group, a C1-6 alkylaminocarbonyl group, a C1-6 alkoxycarbonyl group, a hydroxyl group, a C1-8 alkyl group, a C1-6 alkoxy group (wherein the alkyl group and alkoxy group may be substituted with one or more substituents selected from a halogen atom, an aryl group, a heteroaryl group, —NR41R42, and —OR43), an aryloxy group, and a heteroaryloxy group; wherein
R41, R42, and R43 are independently selected from a hydrogen atom, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, an amino group, a C1-6 alkylamino group, and a di(C1-6 alkyl)amino group), an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group; or
R41 and R42, together with a nitrogen atom to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom; and
Group D consists of a halogen atom, an aryl group, a heteroaryl group, an aryloxy group, a heteroaryloxy group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, a hydroxy C1-6 alkyl group, a C1-6 alkoxy C1-6 alkyl group, a C1-6 alkylamino C1-6 alkyl group, a di(C1-6 alkyl)amino C1-6 alkyl group, an aryl group, an aryl C1-6alkyl group, and a heteroaryl group), a hydroxyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, a C1-6 alkylamino group, and di(C1-6 alkyl)amino group), a C1-6 alkoxycarbonyl group, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, a C1-6 alkoxycarbonyl group, an amino group, an aryl group, a heteroaryl group, a C1-6 alkylamino group, and a di(C1-6 alkyl)amino group;
or a pharmaceutically acceptable salt of said compound.

2. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein Y3 represents —NR1R2.

3. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein
Y1, Y2, and Y4 represent a hydrogen atom;
Y3 represents —NR1R2;
X represents an aryl group or a heteroaryl group, and the aryl group may be substituted with one or more substituents selected from Group A;
Group A consists of a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom and —NR12R13) a halogen atom, a hydroxyl group, an aryl group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group and an aryl group), —SR14, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more groups selected from —OR11 and a halogen atom), and a 4- to 7-membered hetero ring group (wherein the nitrogen atom of the hetero ring group may be substituted with one or two substituents selected from a C1-8 alkyl group and a C1-6 alkoxycarbonyl group); wherein
R11, R12, R13, and R14 are independently selected from a hydrogen atom, a C1-8 alkyl group, and an aryl group; or R12 and R13, together with nitrogen to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom;
R1 represents a hydrogen atom, or a C1-8 alkyl group that may be substituted with one or more substituents selected from Group B;
R2 represents a C1-8 alkyl group substituted with one or more substituents selected from Group B, —COOR3, —COR4, —COSR5, —CONR6R7, —NR22R23, or —N═CR24R25; or R1 and R2, together with a nitrogen atom to which they are bonded, may form a 4- to 10-membered hetero ring containing at least one nitrogen atom (wherein the hetero ring may be substituted with one or more substituents selected from Group C); wherein
R3 represents a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a hydroxyl group, a C1-6 alkoxy group, and a phenyl group), a C3-8 cycloalkyl group, an aryl group, and a heteroaryl group), a C2-7 alkenyl group, a C2-7 alkynyl group, a C3-8 cycloalkyl group, an aryl group, or a heteroaryl group;
R4 is selected from a hydrogen atom, a C1-8 alkyl group that is substituted with one or more R20s, 1-naphthyl group, 2-naphthyl group, and a heteroaryl group, and R5 is selected from a C1-8 alkyl group and an aryl group;
R20 represents a hydroxyl group, a halogen atom, an aryl group, a heteroaryl group, a C1-6 alkoxy group, an aryloxy group, an aryl C1-6 alkoxy group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, an aryl group, and —COOR21), or a 4- to 7-membered hetero ring group containing at least one nitrogen atom (wherein the hetero ring group may be substituted with a C1-8 alkyl group);
R21 represents a C1-8 alkyl group, an aryl C1-6 alkyl group, or an aryl group;
R6 and R7 are independently selected from a hydrogen atom, a C1-8 alkyl group, and an aryl group;
R22, R23, R24, and R25 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl group, and a heteroaryl group;
Group B consists of a halogen atom, a C1-6 alkoxycarbonyl group, an aryl group, —OR31, and —NR32R33; wherein
R31, R32, and R33 are independently selected from a hydrogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, a heteroaryl group, and —COOR34; wherein R34 represents a C1-8 alkyl group, an aryl C1-6 alkyl group, or an aryl group; or
R32 and R33, together with a nitrogen atom to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom; and
Group C consists of a C1-6alkoxycarbonyl group, a hydroxyl group, a C1-8 alkyl group, an aryl C1-6 alkoxy C1-8 alkyl group, a hydroxy C1-8 alkyl group, an aryloxy group, and a heteroaryloxy group.

4. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein R1 and R2, together with a nitrogen atom to which they are bonded, form a 4- to 10-membered hetero ring containing at least one nitrogen atom, wherein the hetero ring may have a substituent selected from Group C.

5. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein Y2 or Y3 represents a morpholinyl group, an azetidinyl group, a pyrrolidinyl group, or piperidinyl group, and the hetero ring group may be substituted with one or more substituents selected from a hydroxyl group and a hydroxy C1-6 alkyl group.

6. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein Y2 or Y3 represents a morpholinyl group, an azetidinyl group, a pyrrolidinyl group, a 3-hydroxypyrrolidinyl group, a 2-hydroxymethylpyrrolidinyl group, a 3-hydroxymethylpyrrolidinyl group, a piperidinyl group, a 3-hydroxypiperidinyl group, a 4-hydroxypiperidinyl group, a 2-hydroxymethylpiperidinyl group, a 3-hydroxymethylpiperidinyl group, a 4-hydroxymethylpiperidinyl group, or a 4-hydroxy-4-hydroxymethylpiperidinyl group.

7. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein
R1 represents a hydrogen atom or a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from Group B); and
R2 represents a C1-8 alkyl group substituted with one or more substituents selected from Group B, —COOR3, or —COCH2NHCOOR21.

8. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein
R1 represents a hydrogen atom; and
R2 represents —COOR3, —COSR5, —CONR6R7, or —COR4.

9. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein R2 represents —COOR3.

10. The compound, or pharmaceutically acceptable salt thereof according to claim 9, wherein R3 represents a C1-8 alkyl group, a C2-7 alkenyl group, or a C2-7 alkynyl group (wherein the alkyl group, alkenyl group, and alkynyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, or a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a hydroxyl group, a C1-6 alkoxy group, and a phenyl group)).

11. The compound, or pharmaceutically acceptable salt thereof according to claim 10, wherein R3 represents a C1-8 alkyl group that is substituted with one or more hydroxyl groups, a C2-7 alkenyl group that is substituted with one or more hydroxyl groups, or a C2-7 alkynyl group that is substituted with one or more hydroxyl groups.

12. The compound, or pharmaceutically acceptable salt thereof according to claim 11, wherein R3 represents a C1-6 alkyl group that is substituted with one or more hydroxyl groups.

13. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein Y2 or Y3 represents a bis(hydroxy C1-6 alkyl)amino group, a methyl(hydroxy C1-6alkyl)amino group, a hydroxy C1-6 alkylamino group, a methyl(morpholinyl C1-6 alkyl)amino group, an amino C1-6 alkylamino group, a C1-6alkoxycarbonylamino group, or a hydroxy C1-6 alkoxycarbonylamino group.

14. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein Y2 or Y3 represents a bis(2-hydroxyethyl)amino group, a methyl(2-hydroxyethyl)amino group, a 2-hydroxyethylamino group, a methyl(2-morpholin-4-ylethyl)amino group, a methyl(2-aminoethyl)amino group, or a 2-hydroxyethyloxycarbonylamino group.

15. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein X represents a phenyl group or a heteroaryl group, and the phenyl group or heteroaryl group may be substituted with one or more substituents selected from Group A.

16. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein X represents a phenyl group, and the phenyl group may be substituted with one or more substituents selected from Group A.

17. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein
X represents a phenyl group or a heteroaryl group, and the phenyl group or heteroaryl group may be substituted with one or more substituents selected from Group A; and
Group A consists of a C1-8 alkyl group that is substituted with one or more halogen atoms, an aryl group, a C1-6 alkylthio group, a di(C1-6 alkyl)amino group, a 4- to 7-membered hetero ring group containing at least one nitrogen atom, a C1-8 alkyl group, a C2-7 alkenyl group, a C2-7 alkynyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more halogen atoms), and a hydroxyl group.

18. The compound, or pharmaceutically acceptable salt thereof according to claim 1, wherein X represents a phenyl group, and the phenyl group may be substituted with one or more substituents selected from an ethyl group, a trifluoromethyl group, a trifluoromethoxy group, a methylthio group, a methoxy group, a chloro group, a phenyl group, a dimethylamino group, a morpholinyl group, a piperidinyl group, and a pyrrolidinyl group.

19. A compound represented by the following formula IV:



wherein X represents a phenyl group or a heteroaryl group, and the phenyl group or heteroaryl group may be substituted with one or more substituents selected from Group A; and L represents a fluorine atom, a bromine atom, or an iodine atom that is bonded to the 6- or 7-position on an isoquinolone ring;
Group A consists of a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, an aryl group, a heteroaryl group, —OR11, and —NR12R13), a C2-7 alkenyl (wherein the C2-7 alkenyl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group), a C2-7 alkynyl group (wherein the C2-7 alkynyl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group), a halogen atom, a hydroxyl group, an aryl group, a heteroaryl group, a cyano group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, which may be substituted with —OR11 or —NR12R13, an aryl group, an aryl C1-6 alkyl group, and a heteroaryl group), —S(O)nR14 (wherein n represents the integer between 0 and 2), a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more groups selected from an aryl group, a heteroaryl group, —OR11, —NR12R13, and a halogen atom), a 4-to 7-membered hetero ring group (wherein the hetero ring group may be substituted with one or more substituents selected from Group D), an aryloxy group, a heteroaryloxy group, and a C1-6 alkylenedioxy group; wherein R11, R12, R13, and R14 are independently selected from a hydrogen atom, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, an amino group, a C1-6 alkylamino group, a di(C1-6alkyl)amino group, an aryl group, and a heteroaryl group), an aryl group, and a heteroaryl group; or R12 and R13, together with nitrogen to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom;
Group D consists of a halogen atom, an aryl group, a heteroaryl group, an aryloxy group, a heteroaryloxy group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, a hydroxyl C1-6 alkyl group, a C1-6 alkoxy C1-6 alkyl group, a C1-6 alkylamino C1-6 alkyl group, a di(C1-6alkyl)amino C1-6 alkyl group, an aryl group, an aryl C1-6 alkyl group, and a heteroaryl group), a hydroxyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, a C1-6 alkylamino group, and di(C1-6alkyl)amino group), a C1-6 alkoxycarbonyl group, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, a C1-6 alkoxycarbonyl group, an amino group, an aryl group, a heteroaryl group, a C1-6 alkylamino group, and a di(C1-6alkyl)amino group.

20. A method for producing the compound according to claim 1, which comprises amination of a compound represented by the following formula IV:



wherein X represents a phenyl group or a heteroaryl group, and the phenyl group or heteroaryl group may be substituted with one or more substituents selected from Group A; and L represents a fluorine atom, a bromine atom, or an iodine atom that is bonded to the 6- or 7-position on an isoquinolone ring;
Group A consists of a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, an aryl group, a heteroaryl group, —OR11, and —NR12R13), a C2-7 alkenyl (wherein the C2-7 alkenyl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group), a C2-7 alkynyl group (wherein the C2-7 alkynyl group may be substituted with one or more substituents selected from a halogen atom, a C1-8 alkyl group, an aryl C1-6 alkyl group, an aryl group, and a heteroaryl group), a halogen atom, a hydroxyl group, an aryl group, a heteroaryl group, a cyano group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, which may be substituted with one or two substituents selected from a C1-8 alkyl group, which may be substituted with —OR11, —NR12R13, an aryl group, an aryl C1-6 alkyl group, and a heteroaryl group), —S(O)nR14 (wherein n represents the integer between 0 and 2), a C1-6alkoxy group (wherein the alkoxy group may be substituted with one or more groups selected from an aryl group, a heteroaryl group, —OR11, —NR12R13, and a halogen atom), a 4-to 7-membered hetero ring group (wherein the hetero ring group may be substituted with one or more substituents selected from Group D), an aryloxy group, a heteroaryloxy group, and a C1-6alkylendioxy group; wherein R11, R12, R13, and R14 are independently selected from a hydrogen atom, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, an amino group, a C1-6 alkylamino group, a di(C1-6alkyl)amino group, an aryl group, and a heteroaryl group), an aryl group, and a heteroaryl group; or R12 and R13, together with nitrogen to which they are bonded, may form a 4- to 7-membered hetero ring containing at least one nitrogen atom; Group D consists of a halogen atom, an aryl group, a heteroaryl group, an aryloxy group, a heteroaryloxy group, an amino group (wherein the nitrogen atom of the amino group may be substituted with one or two substituents selected from a C1-8 alkyl group, a hydroxyl C1-6 alkyl group, a C1-6 alkoxy C1-6 alkyl group, a C1-6 alkylamino C1-6 alkyl group, a di(C1-6alkyl)amino C1-6 alkyl group, an aryl group, an aryl C1-6 alkyl group, and a heteroaryl group), a hydroxyl group, a C1-6 alkoxy group (wherein the alkoxy group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, a C1-6 alkylamino group, and di(C1-6alkyl)amino group), a C1-6 alkoxycarbonyl group, a C1-8 alkyl group (wherein the alkyl group may be substituted with one or more substituents selected from a halogen atom, a hydroxyl group, a C1-6 alkoxy group, a C1-6 alkoxycarbonyl group, an amino group, an aryl group, a heteroaryl group, a C1-6 alkylamino group, and a di(C1-6alkyl)amino group.

21. A pharmaceutical composition, which comprises, as an active ingredient, the compound, or pharmaceutically acceptable salt thereof according to claim 1.