Patent ID: 7038042
Filing Date: 2006-05-02
Classification: C07D

Abstract:
1. A compound represented by the formula: wherein Z is an electron-withdrawing group selected from the group consisting of a) a carboxyl group which may be optionally esterified, b) a group represented by the formula —(CO)NR c) a group represented by the formula —(CO)R d) nitrile group, e) nitro group, f) a group represented by the formula —(SO g) a group represented by the formula —PR h) a group represented by the formula —(PO)(OR i) an optionally substituted aryl group, j) an optionally substituted alkenyl group, k) a halogen atom and l) a nitroso group; ring A is an optionally substituted ring; the combined line of a broken line and and a solid line is a single bond or a double bond; R 3 is a hydrogen atom or an optionally substituted hydrocarbon group; and X is a divalent group is a straight-chain moiety of 4 or more atoms or a salt thereof.