Patent ID: 7960483

Claim:
An adamantane derivative, represented by formula (I): wherein: m represents an integer of 2 to 4; k represents an integer of 0 to (16−m); W represents a group selected from an alkyl group, a halogen atom, a hydroxyl group, and ═O formed by two W's taken together; X is attached to a bridge-head carbon of the adamantane skeleton, and X represents a group represented by formula (II), (III), or (IV): wherein R 2 to R 4 each independently represent a C 1 to C 10 hydrocarbon group which may contain an oxygen atom or a sulfur atom, a represents an integer of 1 to 4, b represents an integer of 0 to 6, and c represents an integer of 0 to 8; and Y represents a group represented by formula (V) or formula (VI): wherein R 1 represents a methyl group or an ethyl group.