Patent ID: 7897607

Claim:
A compound represented by the formula: A-W—Ar (I) wherein, A is a group represented by the formula: wherein R 1a is (1) an amino which is mono- or di-substituted with (i) a C 1-8 alkyl which may be substituted with a hydroxyl substituted with a C 1-8 alkyl, a C 3-7 cycloalkyl, a phenyl, a 4-methylphenyl, a hydroxyl substituted with a phenyl, a 2-chlorophenyl, a heterocyclic group, a 4-chlorophenyl, a 4-(benzyloxy)phenyl, a 3-methoxyphenyl, a 3-chlorophenyl, a 2′-cyanobiphenyl, a naphthyl, a 2,5-dimethoxyphenyl, a 3-fluoro-5-(trifluoromethyl)phenyl, an acyl, or an esterified or amidated carboxyl, (ii) a C 2-8 alkenyl, (iii) a C 1-10 acyl, or (iv) a C 3-7 cycloalkyl, or (2) a cyclic amino; R 2 is a hydrogen, a C 1-8 alkyl which may be substituted by a cyano or a phenyl; R 2′ is (1) a hydrogen, (2) an acetyl, or (3) a C 1-8 alkyl which may be substituted with a phenyl, a 4-methoxyphenyl or an acetyl; W is a bond; and Ar is a phenyl which is substituted with (i) one or more C 1-8 alkyl which may be substituted with one or more halogen, (ii) one or more alkoxy, (iii) one or more halogen, (iv) one or more benzyloxy, or (v) one or more hydroxy; or a salt thereof.