Patent ID: 8211908

Claim:
A compound represented by a general formula: wherein R 1 denotes an optionally substituted C 2 -C 12 alkyl, aryl or heterocyclic group; X 1 denotes an optionally substituted C 2 -C 4 alkylene group; X 2 denotes a group represented by a general formula NR 2 (where R 2 denotes a hydrogen atom, an optionally substituted lower alkyl group or an imino-protecting group) or a bond; X 3 denotes a group represented by a general formula NR 3 or CR 4 R 5 NR 3 (where R 3 denotes a hydrogen atom, an optionally substituted lower alkyl group or an imino-protecting group; and R 4 and R 5 are the same or different and are each a hydrogen atom or an optionally substituted lower alkyl group, or R 4 and R 5 together form an oxo group) or a bond; X 4 denotes an optionally substituted lower alkylene, lower alkenylene or lower alkynylene group or a bond; X 5 denotes an oxygen atom, a sulfur atom, a sulfinyl group, a sulfonyl group, a group represented by a general formula NR 6 (where R 6 denotes a hydrogen atom, an optionally substituted lower alkyl, lower alkenyl or lower alkynyl group or an imino-protecting group) or a bond; Y 1 denotes an optionally substituted bivalent alicyclic hydrocarbon residue or an optionally substituted bivalent alicyclic amine residue; Z 1 , Z 2 and Z 4 are each CH; Z 3 is a nitrogen atom; Z 5 is a group represented by a general formula CR 7d (where R 7d is a halogen atom or an optionally substituted lower alkyl or lower alkoxy group); and Z 6 is a nitrogen atom or CH or a salt thereof.