A facile synthetic approach toward six designed analogues (2–7) of linckoside B, a new neuritogenic steroid glycoside isolated from the Okinawan starfish Linckia laevigata, has been developed. The key steroid aglycon was achieved by a dimethylaluminum chloride-mediated ‘ene’ reaction. A versatile strategy was employed for the construction of glycosidic bonds through Schmidt's procedure using a glycosyl trichloroacetimidate donor.
从冲绳海星 Linckia laevigata 中分离出的一种新的致神经甾体苷--linckoside B 的六种类似物(2-7)的简易合成方法已经开发成功。关键的类
固醇苷元是通过
二甲基氯化铝介导的 "烯 "反应生成的。通过施密特程序,使用三
氯乙酰亚
氨酸糖基供体构建糖苷键时,采用了一种多功能策略。