Patent ID: 7423180

Claim:
A 1,3-bis(3-amino-4-hydroxyphenyl)adamantane derivative according to formula (I): wherein R 1 and R 2 each independently represent a halogen atom, a hydroxyl group, a C1-C10 alkyl group, a C1-C10 alkoxyl group, a carboxyl group, or an alkoxycarbonyl group having a C1-C10 alkyl group; m is an integer of 0 to 3; n is an integer of 0 to 14; when m is 2 or more, a plurality of R 1 s may be identical to or different from one another; and when n is 2 or more, a plurality of R 2 s may be identical to or different from one another; with the proviso that the case where the following three conditions are met is excluded: R 2 is methyl and present at a bridgehead; m is 0; and n is 2.