(1R,2S,4S)-5-Benzyloxy-1-[(S)-2-((1S,2R)-3-benzyloxy-1-benzyloxymethyl-1,2-dihydroxy-propyl)-oxiranyl]-1-hydroxy-2,4-dimethyl-pentan-3-one 在
4-甲基苯磺酸吡啶 作用下,
以
甲醇 为溶剂,
反应 14.0h,
以80%的产率得到(1S,3R,4S,5R,6R,7S)-3,4-Bis-benzyloxymethyl-1-((S)-2-benzyloxy-1-methyl-ethyl)-5-hydroxymethyl-7-methyl-2,8-dioxa-bicyclo[3.2.1]octane-4,6-diol