Patent ID: 7138533

Claim:
A compound represented by the formula: wherein Ar 1 represents wherein A ring represents a benzene ring which may have 1 to 4 substituents selected from (i) halogen, (ii) C 1-6 alkoxy, (iii) halogenoC 1-6 alkoxy, (iv) amino, (v) (mono or di) C 1-6 alkylamino, (vi) 1-pyrrolidinyl, (vii) piperidino, (viii) 1-piperazinyl, (ix) N-methyl-1-piperazinyl, (x) N-acetyl-1-piperazinyl, (xi) morpholino, (xii) hexamethyleneimino, (xiii) imidazolyl, (xiv) C 1-6 alkyl which may be substituted with carboxy optionally esterified with C 1-6 alkyl, (xv) lower alkyl-carbonylamino, (xvi) lower alkylsulfonylamino, (xvii) aminosulfonyl, (xviii) (mono or di) C 1-6 alkylaminosulfonyl, (xix) 5- to 7-membered cyclic amino-sulfonyl, (xx) carbamoyl, (xxi) (mono or di) C 1-6 alkylcarbamoyl, (xxii) 5- to 7-membered cyclic amino-carbonyl and (xxiii) cyano, L 1 represents a C 4-6 alkylene group which may have 1 to 4 substituents selected from halogen atom, nitro, cyano, optionally halogenated C 1-6 alkoxy and hydroxy; L 2 represents a C 2-4 alkylene group which may have 1 to 4 substituents selected from halogen atom, hydroxy, oxo and phenyl; R represents (i) hydrogen atom, (ii) C 1-4 alkyl group which may have 1 to 3 substituents selected from halogen atom and hydroxy or (iii) C 7-16 aralkyl group; X represents a bond, an oxygen atom or NH; and Ar 2 represents a C 6-10 aryl group which may have 1 to 5 substituents selected from halogen atom, C 1-6 alkyl group, halogenoC 1-6 alkyl, hydroxy, C 1-6 alkoxy, halogenoC 1-6 alkoxy, nitro, amino, cyano, carbamoyl, amino which may be substituted with carbamoyl or formyl, each of which is optionally substituted with C 1-6 alkyl, C 1-3 alkylenedioxy, aminocarbonyloxy group which may be substituted with C 1-6 alkyl, 5- to 7-membered cyclic amino-carbonyloxy, aminosulfonyl, mono-C 1-6 alkylaminosulfonyl and di-C 1-6 alkylaminosulfonyl, or a salt thereof.