Patent ID: 6451988
Filing Date: 2002-09-17
Classification: C07D

Abstract:
A naphthol derivative represented by general formula (1): wherein each Y1 and Y2 is selected from the group consisting of carboxyl, esterified carboxyl, amidated carboxyl groups and a group represented by general formula (2): whereinX1 is â€”Oâ€”, â€”Sâ€” or â€”NHâ€”, Z is an optionally substituted aromatic or heterocyclic group having conjugated double bonds, provided that at least one of Y1 and Y2 is the group of formula (2);Q is selected from the group consisting of optionally branched alkyl and alkoxy groups each having 1-6 carbon atoms, halogen atom, nitro and nitroso groups; m is an integer of 0-3 R is selected from the group consisting of hydrogen atom, alkaline metal atom, optionally substituted and optionally branched alkyl and acyl groups each having 1-20 carbon atoms, and phenylalkyl group; or a salt thereof.