tert-butyl-[3-[(2S,3R)-3-[[(1R,3S,4S,6R,8R,10S,12R,13S)-1-methyl-4-phenylmethoxy-6-(3-phenylmethoxypropyl)-13-triethylsilyloxy-2,7,11-trioxatricyclo[8.5.0.03,8]pentadecan-12-yl]methyl]-3-(4-methylphenyl)sulfonyloxiran-2-yl]propoxy]-diphenylsilane 在
对甲苯磺酸 作用下,
以
氯仿 为溶剂,
反应 3.0h,
以90%的产率得到(2R,4S,4aS,5aR,8S,9R,10aS,11aR)-4-Benzyloxy-2-(3-benzyloxy-propyl)-9-[(2R,3S)-3-[3-(tert-butyl-diphenyl-silanyloxy)-propyl]-2-(toluene-4-sulfonyl)-oxiranylmethyl]-5a-methyl-dodecahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-8-ol