The synthetic medium of optical N acylalanines was N (2,6 xylyl) alanine.It was reacted with 1 menthol and prepared into its menthol esters which were purified by TLC, resolved and determined by HPLC.

光学活性杀菌中间体N-（2，6-二甲苯基）-丙酸与l-薄荷醇在催化下，生非对映异构体薄荷醇酯。