(3aS,4R,7R,7aR)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-6-((2R,3R,4R,5R,6R)-3,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-ylmethyl)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6,7-diol 在
sodium tetrahydroborate 、 4 A molecular sieve 、
甲酸铵 、
silver trifluoromethanesulfonate 、 sodium cyanoborohydride 作用下,
以
甲醇 、
乙醇 、
二氯甲烷 为溶剂,
反应 4.0h,
生成
(3aS,4R,6S,7S,7aR)-7-Benzyloxy-4-(tert-butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-6-((2R,3R,4R,5R,6R)-3,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-ylmethyl)-hexahydro-[1,3]dioxolo[4,5-c]pyridine