An optically active lactic acid derivative represented by the following formula (I): ##STR1## wherein R is a saturated or unsaturated hydrocarbon group of a linear, branched or cyclic structure having 4 to 20 carbon atoms; Ra is --CO--Rb or --CH.sub.2 --Rc wherein Rb is a releasable chemically active group, and Rc is a releasable chemically active group; and C with * represents an asymmetric carbon atom.
下面是公式(I)所代表的光学活性
乳酸衍
生物:
##STR1##
其中,R是一种具有4到20个碳原子的直链、支链或环状结构的饱和或不饱和的碳氢基团;Ra是--CO--Rb或--CH.sub.2--Rc,其中Rb是可释放的
化学活性基团,而Rc是可释放的
化学活性基团;C与*表示不对称碳原子。