Patent ID: 6953789

Claim:
A compound represented by Formula: wherein ring A and ring B may be same or different and each is an optionally substituted homocyclic or heterocyclic ring, wherein the substituents on ring A and ring B may be bound to each other and taken together with ring A, ring B and X 2 to form a condensed ring, each R 1 may be same or different and is a hydrogen atom, an optionally substituted hydrocarbon group, an acyl group, an optionally substituted heterocyclic group or SR 2 , wherein R 2 is a hydrogen atom, an optionally substituted hydrocarbon group, an acyl group or an optionally substituted heterocyclic group, X 1 is a bond, an optionally substituted divalent C 1-3 aliphatic hydrocarbon group or —NR 3 —, wherein R 3 is a hydrogen atom, an optionally substituted hydrocarbon group or an acyl group, X 2 is a bond, an optionally substituted divalent C 1-3 aliphatic hydrocarbon group, —NR 4 —, —O— or —S(O) p —, wherein R 4 is a hydrogen atom, an optionally substituted hydrocarbon group or an acyl group, and wherein p is 0, 1 or 2, each Y may be same or different and is a hydrogen atom, an optionally substituted hydrocarbon group, a halogen atom, a carboxyl group, an acyl group, an optionally substituted hydroxy group, an optionally substituted amino group, SR 5 , an oxo group, a thioxo group, an optionally substituted imino group, a nitro group or a cyano group, wherein R 5 is a hydrogen atom, an optionally substituted hydrocarbon group, an acyl group or an optionally substituted heterocyclic group, each m may be same or different and is 0 or 1, n is 3, q 1 is an integer of 1 to 2n+4, q 2 is an integer of 0 to 2n+3, and the sum of q 1 and q 2 is 2n+4, provided that when ring B is a nitrogen-containing heterocyclic ring then X 2 binds to a position capable of being substituted except for a nitrogen atom on ring B, or a salt thereof.