methyl (4S,5R)-5-[3-(2,5-dimethylpyrrol-1-yl)-2,5-dimethoxyphenyl]-5-methoxy-4-methylpentanoate 在
(4aR,7S,8aR)-9,9-dimethylhexahydro-4a,7-methanobenzo
oxazireno<2,3-b>thiazol-3,3-dioxide 、 lithium diisopropyl amide 作用下,
以
四氢呋喃 为溶剂,
反应 0.83h,
生成 methyl (2S,4S,5R)-5-[3-(2,5-dimethylpyrrol-1-yl)-2,5-dimethoxyphenyl]-2-hydroxy-5-methoxy-4-methylpentanoate 、 (2S,4S,5R)-5-[3-(2,5-Dimethyl-pyrrol-1-yl)-2,5-dimethoxy-phenyl]-2-hydroxy-5-methoxy-4-methyl-pentanoic acid methyl ester