SULFUR ATOM-CONTAINING OR OXYGEN ATOM-CONTAINING AMINO ACID DERIVATIVE

摘要

PROBLEM TO BE SOLVED: To provide a compound or a pharmacologically acceptable salt thereof to treat pain.;SOLUTION: There is provided a compound expressed by general formula (I) or a pharmacologically acceptable salt thereof. (In the formula, R¹ represents a hydrogen atom, or the like; X represents an oxygen atom, or the like; and Y represents a methylene group, or the like).;COPYRIGHT: (C)2014,JPO&INPIT