Spirochromanon derivatives

1. The compound, or a salt thereof, wherein the compound is represented by a general formula (I-1):

wherein Ar 1 represents a group formed from an aromatic ring selected from a group consisting of benzene, pyrazole, isoxazole, pyridine, indole, 1H-indazole, 1H-furo[2,3-c]pyrazole, 1H-thieno[2,3-c]pyrazole, benzimidazole, 1,2-benzisoxazole, imidazo[1,2-a]pyridine, imidazo[1,5-a]pyridine and 1H-pyrazolo[3,4-b]pyridine, having Ar 2 , and optionally having one or two or more substituents selected from R 3 ;

Ar 2 represents an aromatic group selected from a group consisting of a phenyl group, a furyl group, a thienyl group, a pyrazolyl group, a thiazolyl group, an oxazolyl group, an isoxazolyl group, a 1,2,4-triazolyl group, a 1,2,4-oxadiazolyl group, a 1,3,4-oxadiazolyl group, a tetrazolyl group, a pyridyl group, a pyrazinyl group, a pyrimidinyl group, an indolyl group and a benzo[b]thienyl group, optionally having a substituent selected from a group consisting of a halogen atom, a nitro group, a cyano group, a hydroxyl group, a C1-C6 alkyl group, a halo-C1-C6 alkyl group, a hydroxy-C1-C6 alkyl group, a cyclo-C3-C6 alkyl group, a C2-C6 alkenyl group, a C1-C6 alkoxy group, a halo-C1-C6 alkoxy group, a C1-C6 alkylthio group, a C2-C7 alkanoylamino group, a C1-C6 alkylcarbamoyl group, a cyclo-C3-C6 alkylcarbamoyl group, a (C1-C6 alkoxy-C1-C6 alkyl)carbamoyl group, a C1-C6 alkoxycarbonyl group, a C1-C6 alkylsulfonyl group, a C1-C6 alkylsulfonylamino group and a tetrazolyl group;

R 1 represents a group of -Q 1 -N(R a )-Q 2 -R b ;

or heterocyclic group optionally having a substituent selected from a group consisting of a halogen atom, a hydroxyl group, an oxo group, a thioxo group, a C1-C6 alkyl group, a halo-C1-C6 alkyl group, a hydroxy-C1-C6 alkyl group, a C2-C7 alkanoyloxy-C1-C6 alkyl group, a C1-C6 alkoxy group, a halo-C1-C6 alkoxy group, a formyl group, a carboxyl group, a C2-C7 alkanoyl group, a C2-C7 alkoxycarbonyl group, a C1-C6 alkylsulfonyl group and a group of —CO—N(R c )R d ; or a C1-C6 alkyl group or a C2-C6 alkenyl group having the aryl or heterocyclic group;

R 20 represents a hydrogen atom, a halogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group;

R 3 represents a halogen atom, a nitro group, a cyano group, a hydroxyl group, a carboxyl group, a C2-C6 alkenyl group, a cyclo-C3-C6 alkyl group, or a group of —N(R e )R f ;

a phenoxy group, a C1-C6 alkoxy group, a C2-C7 alkoxycarbonyl group, a C1-C6 alkylthio group, a cyclo-C3-C6 alkyloxy group, a cyclo-C3-C6 alkyloxycarbonyl group, a cyclo-C3-C6 alkyl-C1-C6 alkoxy group, a cyclo-C3-C6 alkylthio group or a cyclo-C3-C6 alkyl-C1-C6 alkylthio group, optionally substituted with a halogen atom or a hydroxyl group, wherein the cyclo-C3-C6 alkyl group in the cyclo-C3-C6 alkyloxy group, the cyclo-C3-C6 alkyloxycarbonyl group, the cyclo-C3-C6 alkyl-C1-C6 alkoxy group, the cyclo-C3-C6 alkylthio group or the cyclo-C3-C6 alkyl-C1-C6 alkylthio group may be interrupted by an oxygen atom, a sulfur atom or an imino group;

a C1-C6 alkyl group optionally having a substituent selected from a group consisting of a halogen atom, a hydroxyl group, a cyclo-C3-C6 alkyl group and a C1-C6 alkoxy group; or

a phenyl group, a 1,2,4-triazolyl group or a tetrazolyl group optionally having a substituent selected from a group consisting of a halogen atom, a nitro group, a hydroxyl group, a C1-C6 alkyl group, a halo-C1-C6 alkyl group, a hydroxy-C1-C6 alkyl group, a cyclo-C3-C6 alkyl group, a C2-C6 alkenyl group, a C1-C6 alkoxy group, a halo-C1-C6 alkoxy group and a C1-C6 alkylthio group;

Q 1 and Q 2 are a single bond, R a is a hydrogen atom, and R b is a heteroaromatic group optionally substituted with a C1-C6 alkyl group optionally having a substituent selected from a group consisting of a halogen atom, a C1-C6 alkoxy group, a carbamoyl group and a C2-C7 alkoxycarbonyl group;

R c , and R d , each independently represent a hydrogen atom, a C1-C6 alkyl group, or a halo-C1-C6 alkyl group;

R e and R f each independently represent a hydrogen atom, a C1-C6 alkyl group, or a halo-C1-C6 alkyl group, or taken together, they may form a C2-C5 alkylene group optionally interrupted by an oxygen atom, a sulfur atom or an imino group; and

U represents a methine group.

2. The compound as claimed in claim 1 , or a salt or ester thereof, which is the following:

(1) 1′-{[4-(Benzo[b]thiophen-2-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)-spiro[chroman-2,4′-piperidin]-4-one,

(2) 1′-{[2,6-Bis(4-fluorophenyl)pyridin-4-yl]carbonyl}-6-(tetrazol-5-yl)-spiro[chroman-2,4′-piperidin]-4-one,

(3) 1′-{[2-Methoxy-6-phenylpyridin-4-yl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one.

(4) 1′-{[3-(1H-indol-5-yl) 5 -methoxyphenyl]carbonyl}-6-(tetrazol-5-yl)-spiro[chroman-2,4′-piperidin]-4-one,

(5) 1′-{[2,6-Dimethoxybiphenyl-4-yl]carbonyl}-6-(tetrazol-5-yl)-spiro[chroman-2,4′-piperidin]-4-one,

(6) 1′-{[2,6-Dimethoxybiphenyl-4-yl]carbonyl}-6-(tetrazol-5-yl)-spiro[chroman-2,4′-piperidin]-4-one sodium salt,

(7) 1′-{[3-Pyrrolidin-1-yl-5-(1,2,4-triazol-3-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one sodium salt,

(8) 6-[(1-Methyl-1H-pyrazol-5-yl)amino]-1′-{[2-phenyl-6-(tetrazol-5-yl)pyridin-4-yl]carbonyl}spiro[chroman-2,4′-piperidin]-4-one,

(9) [5-(4-Oxo-1′-{[3-(pyrrolidin-1-yl-5-(1,2,4-triazol-3-yl)phenyl]carbonyl}-spiro[chroman-2,4′-piperidin]-6-yl)-tetrazol-2-yl]methyl-2,2-dimethylpropanoate,

(10) [5-(1′-{[2,6-Dimethoxybiphenyl-4-yl]carbonyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)-tetrazol-2-yl]methyl-2,2-dimethylpropanoate,

(11) 1′-{[3-Ethoxy-5-(tetrazol-5-yl)phenyl]carbonyl}-6-[(1-methyl-1H-pyrazol-5-yl)amino]spiro[chroman-2,4′-piperidin]-4-one sodium salt,

(12) 1′-{[3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(14) 6-(1-Methyl-1H-pyrazol-4-yl)-1′-{[5-(tetrazol-5-yl)biphenyl-3-yl]carbonyl}spiro[chroman-2,4′-piperidin]-4-one,

(15) 1′-{[3-Ethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(16) 6-[(1-Methyl-1H-pyrazol-5-yl)amino]-1′-{[3-(pyrrolidin-1-yl)-5-(tetrazol-5-yl)phenyl]carbonyl}spiro[chroman-2,4′-piperidin]-4-one,

(17) 5-(4-Oxo-1′-{[5-(tetrazol-5-yl)biphenyl-3-yl]carbonyl}-spiro[chroman-2,4′-piperidin]-6-yl)pyridine-3-carboxamide sodium salt,

(18) 1′-{[3,5-Diethoxy-4-(1H-pyrazol-4-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(19) 1′-{[3,5-Diethoxy-4-(1H-pyrazol-4-yl)phenyl]carbonyl}-6-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)spiro[chroman-2,4′-piperidin]-4-one,

(20) 1′-{[3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-6-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)spiro[chroman-2,4′-piperidin]-4-one,

(22) 1′-{[3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-6-(5-oxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)spiro[chroman-2,4′-piperidin]-4-one,

(23) 1′-{[3,5-Diethoxy-4-isoxazol-4-ylphenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(24) 5-(1′-{[2,6-Dimethoxybiphenyl-4-yl]carbonyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)pyridine-3-carboxylic acid,

(25) 5-(1′-{[3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)pyridine-3-carboxylic acid,

(26) 5-(1′-{[3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)pyridine-3-carboxylic acid sodium salt,

(27) [5-(1′-{[3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)-2H-tetrazol-2-yl]methyl 2,2-dimethylpropanoate,

(29) 1′-{[3-Ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(30) 1′-{[3-Ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one sodium salt,

(31) 1′-{[3,5-Diethoxy-4-(6-fluoropyridin-3-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(32) 1′-{[3,5-Diethoxy-4-(2-fluoropyridin-4-yl)phenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(33) 1′-{[4-(2-Methyl-1,3-oxazol-5-yl)-3,5-dimethoxyphenyl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(34) Sodium 5-(1′-{[3,5-diethoxy-4-(6-fluoropyridin-3-yl)phenyl]carbonyl}-4-oxo-spiro[chroman-2,4′-piperidin]-6-yl)pyridine-3-carboxylate,

(35) Sodium 5-(1′-{[3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)pyridine-2-carboxylate,

(36) Sodium 2-(1′-{[3,5-diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl]carbonyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)pyridine-4-carboxylate,

(37) 4-(1′-{(3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl)carbonyl}) oxospiro[chroman-2,4′-piperidin]-6-yl)pyridine-2-carboxylic acid,

(38) 1′-{[1-(1-Methylethyl)-6-phenyl-1H-pyrazolo[3,4-b]pyridin-4-yl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(39) 1′-[(1,3-Diphenyl-1H-thieno[2,3-c]pyrazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(40) 1′-{[1-Cyclopropyl-4-(tetrazol-5-yl)-1H-indol-6-yl]carbonyl}-6-[(1-methyl-1H-pyrazol-5-yl)amino]spiro[chroman-2,4′-piperidin]-4-one,

(42) 1′-{([1-Cyclopropyl-4-(tetrazol-5-yl)-1H-indol-6-yl]carbonyl}-6-(1-methyl-1H-pyrazol-4-yl)spiro[chroman-2,4′-piperidin]-4-one,

(43) 1′-[(3-Cyclopropyl-1-pyridin-2-yl-1H-thieno[2,3-c]pyrazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(44) 1′-{[1-Cyclopropyl-4-(tetrazol-5-yl)-1H-indol-6-yl]carbonyl}-6-[6-(methyloxy)pyridin-3-yl]spiro[chroman-2,4′-piperidin]-4-one,

(45) 1′-{[1-Cyclopropyl-4-(tetrazol-5-yl)-1H-indol-6-yl]carbonyl}-6-(6-oxo-1,6-dihydropyridin-3-yl)spiro[chroman-2,4′-piperidin]-4-one,

(46) 3-(1′-{[1-Cyclopropyl-4-(tetrazol-5-yl)-1H-indol-6-yl]carbonyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)benzamide,

(47) 1′-[(1,3-Diphenyl-1H-indazol-6-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(48) 1′-{[4-Methoxy-1-phenyl-1H-indol-6-yl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(49) 1′-[(3-Phenyl-1-pyridin-2-yl-1H-thieno[2,3-c]pyrazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(50) 1′-[(3-Chloro-1-phenyl-1H-indol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(51) 1′-[(3-Methyl-1-pyridin-2-yl-1H-thieno[2,3-c]pyrazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(52) 1′-[(3-Methyl-1-pyridin-2-yl-1H-thieno[2,3-c]pyrazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one sodium salt,

(53) 1′-[(2-Cyclopropyl-1-phenyl-1H-benzimidazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(54) 1′-[(1-Methyl-3-phenyl-1H-indol-6-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(55) 1′-[(1-Ethyl-3-phenyl-1H-thieno[2,3-c]pyrazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(56) 1′-[(1-Methyl-3-phenyl-1H-indazol-6-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(57) 1′-[(3-Methyl-1-phenyl-1H-indazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(58) Sodium 5-{1′-[(3-methyl-1-pyridin-2-yl-1H-thieno[2,3-c]pyrazol-5-yl)-carbonyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}pyridine-3-carboxylate,

(59) Sodium 5-(1′-[(3-methyl-1-phenyl-1H-indazol-5-yl)carbonyl]-4-oxo-spiro[chroman-2,4′-piperidin]-6-yl)pyridine-3-carboxylate,

(60) Sodium 4-(1′-[(3-methyl-1-pyridin-2-yl-1H-thieno[2,3-c]pyrazol-5-yl)-carbonyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl)pyridine-2-carboxylate,

(61) 1′-{[3-(Difluoromethyl)-1-pyridin-2-yl-1H-thieno[2,3-c]pyrazol-5-yl]carbonyl}-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one,

(62) Methyl 5-{1′-[3-ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]-4-oxospiro[chromman-2,4′-piperidin]-6-yl}nicotinate,

(63) (5-{1′-[3-ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}-2H-tetrazol-2-yl)methylpivalate,

(64) 4-{1′-[(3-methyl-1-phenyl-1H-indazol-5-yl)carbonyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}-2-pyridinecarboxylic acid,

(65) 2-methyl-5-{1′-[(3-methyl-1-phenyl-1H-indazol-5-yl)carbonyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}nicotinic acid,

(66) 3-carboxy-5-{1′-[4-(1-cyclopropyl-1H-pyrazol-4-yl-3,5-diethoxybenzoyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}pyridinium trifluoroacetate,

(67) 5-(1′-{4-[1-(difluoromethyl)-1H-pyrazol-4-yl]-3,5-diethoxybenzoyl}-4-oxospiro[chroman-2,4′-piperidin]-6-yl)nicotinic acid,

(68) 6-{1′-[3,5-dimethoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}nicotinamide,

(71) Sodium 6-{1′-[3,5-diethoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}nicotinate,

(72) 6-(1,1-dioxido-4-thiomorpholinyl)-1′-[3-ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]spiro[chroman-2,4′-piperidin]-4-one,

(75) 5-{1′-[3-Ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}nicotinic acid,

(76) 6-(4-acetyl-1-piperazinyl)-1′-[3-ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]spiro[chroman-2,4′-piperidin]-4-one,

(77) 6-{1′-[3-ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]-4-oxospiro[chroman-2,4′-piperidin]-6-yl}nicotinamide,

(79) 1′-[3-Ethoxy-5-methoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoyl]-6-(1-methyl-1H-pyrazol-4-yl)spiro[chroman-2,4′-piperidin]-4-one,

(80) 1′-[(3-Methyl-1-phenyl-1H-furo[2,3-c]pyrazol-5-yl)carbonyl]-6-(tetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one, or

(81) Sodium 5-[3-cyclopropyl-5-({6-[(1-methyl-1H-pyrazol-5-yl)amino]-4-oxospiro[chroman-2,4′-piperidin]-1′-yl}carbonyl)-1H-indol-1-yl]tetrazolide.

3. A pharmaceutical composition comprising a therapeutically effective amount of the compound of claim 1 or a salt or ester thereof, and a pharmaceutically acceptable additive.