An optically active carboxylic acid derivative represented by the general formula
wherein R represents a normal alkyl group having l to 20 carbon atoms, m and n represent 0 or l but are not l at the same time, X represents a hydrogen or halogen atom, Y represents a hydrogen or fluorine atom, provided that when Y is a hydrogen atom, X is a halogen atom, and that when n is 0, Y is a hydrogen atom, and Q* represents an optically active alkyl or l-alkoxyethyl group having an asymmetric carbon atom.
由通式表示的光学活性
羧酸衍
生物
其中 R 代表具有 l 至 20 个碳原子的普通烷基,m 和 n 代表 0 或 l,但不同时为 l,X 代表氢原子或卤素原子,Y 代表氢原子或
氟原子,条件是当 Y 为氢原子时,X 为卤素原子,当 n 为 0 时,Y 为氢原子,Q* 代表具有不对称碳原子的光学活性烷基或 l-烷氧基乙基。