The aglycon moiety was readily obtained from . R-glycidol in 0 steps in an overall yield of .8% via the preparation of t以R-缩水甘油和，9-壬二醇为原料，经关键中间体S-环氧庚烷，共0步反应，以总收率.8％制得手性S-药喇叭酸甲酯。