A highly stereocontrolled 1,2-cis-α-glycosidation reaction under conditions mild enough for acid-labile alcohols has been developed using benzyl-protected glycopyranosyl diethyl phosphites as glycosyl donors in the presence of 2,6-di-tert-butylpyridinium iodide and tetrabutylammonium iodide.
在
2,6-二叔丁基吡啶鎓
碘化物和四丁基
铵碘化物存在下,以苄基保护的
吡喃糖基
二乙基膦酸盐为糖基供体,开发出了一种高度立体可控的 1,2-顺式-δ-糖苷化反应,其条件温和,足以适用于酸亲和醇。