An efficient α-sialylation method for many primary hydroxyl acceptors that include 6-OH glycosides has been developed. 7,8-Di-O-picoloyl sialyl glycoside was used as the glycosyl donor, and α-glycoconjugation was controlled by using the 7,8-di-O-picoloyl moiety in CH2Cl2. The methodology was successfully applied to the total synthesis of ganglioside Hp-s1 possessing neuritogenic activity.
已经开发出一种有效的α-
唾液酸化方法,用于许多包含6-OH糖苷的伯羟基受体。使用7,8-二-O-
吡啶甲基
唾液酸苷作为糖基供体,并且通过在CH 2 Cl 2中使用7,8-二-O-
吡啶甲基吡啶基部分来控制α-糖基缀合。该方法已成功应用于具有神经生成活性的
神经节苷脂Hp-s1的全合成。