Patent ID: 7067537

Claim:
A compound represented by the formula: wherein n is an integer of 1 to 5, R 1c is a carbamoyl group optionally having substituents selected from the group consisting of a C 1-6 alkyl and a C 6-14 aryl, or an alkylsulfonyl group optionally having halogen atom as a substituent, or two R 1c substituting adjacent carbon atoms are bonded to designate a C 1-2 alkylenedioxy group, and when n is not less than 2, R 1c in the number of n are the same or different, m is an integer of 1 to 5, R 2 is 1) a hydrogen atom, 2) a C 1-4 aliphatic hydrocarbon group optionally having substitutents selected from the group consisting of halogen atom, a hydroxy and carboxy, 3) a carboxyl group optionally esterified by C 1-6 alkyl group, 4) a carbamoyl group optionally having substitutents selected from a C 1-6 alkyl and a C 6-14 aryl, 5) an amino group optionally having substitutents selected from the group consisting of a C 1-6 alkyl, a C 6-14 aryl, a formyl, a C 1-6 alkyl-carbonyl, a C 1-4 aryl-carbonyl, a C 1-6 alkoxy-carbonyl, a C 1-6 alkylsulfonyl and a C 6-14 arylsulfonyl, 6) an unsubstituted C 1-6 alkylthio, optionally halogenated C 1-6 alkylthio or a C 7-16 aralkylthio, or 7) an optionally halogenated C 1-6 alkoxy group or a C 1-6 alkoxy-carbonyl-C 1-6 alkoxy group, or two R 2 substituting adjacent carbon atoms may be bonded to form 8) a saturated or unsaturated divalent C 3-5 carbon chain, and when m is not less than 2, R 2 in the number of m may be the same or different, and R 3 is 1) a hydrogen atom, 2) a halogen atom, 3) a C 1-4 aliphatic hydrocarbon group optionally having sub stituents selected from the group consisting of halogen atom, a hydroxy and carboxy or 4) a carboxyl group optionally esterified by C 1-6 alkyl group, or a salt thereof.