| 摘要 |
The present invention provides 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 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 C1-3 aliphatic hydrocarbon group or -NR<3>-, etc, X<2 >is a bond, an optionally substituted divalent C1-3 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, q1 is an integer of 1 to 2n+4, q2 is an integer of 0 to 2n+3, and the sum of q1 and q2 is 2n+4 or a salt thereof.
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