(2R,3R,3aR,6S,7S,7aS)-6β-<(ethoxycarbonyl)ethyl>-2,3-(isopropylidenedioxy)-6-methyl-7-<(phenylsulfonyl)ethyl>octahydrobenzo<3,4-b>furan 在
potassium tert-butylate 作用下,
以
苯 为溶剂,
反应 0.33h,
生成 (4aS,6aR,6bR,9aR,10aS,10bS)-1-Benzenesulfonyl-2-methoxy-4a,8,8-trimethyl-3,4,4a,5,6,6a,6b,9a,10a,10b-decahydro-7,9,10-trioxa-pentaleno[2,1-a]naphthalene