| abstract |
The present invention provides a compound represented by Formula: n n nwherein ring A and ring B may be same or different and each is an optionally substituted homocyclic or heterocyclic ring and the like, 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 , etc., X 1 is a bond, an optionally substituted divalent C 1-3 aliphatic hydrocarbon group or —NR 3 —, etc, X 2 is a bond, an optionally substituted divalent C 1-3 aliphatic hydrocarbon group, —NR 4 —, —O— or —S(O) p — (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, a cyano group, etc., each m may be same or different and is 0 or 1, n is an integer of 1 to 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 or a salt thereof. |