(2R,8S)-4-benzyloxy-8-methanesulfonyloxymethyl-2-methyl-1-oxo-6-(5,6,7-trimethoxy-1H-indole-2-carbonyl)-1,2,3,6,7,8-hexahydro-3,6-diaza-as-indacene-2,3-dicarboxylic acid 3-benzyl ester 2-methyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙醇 、
乙酸乙酯 为溶剂,
反应 8.0h,
以87%的产率得到methyl (2R*,8S*)-1,2,3,6,7,8-hexahydro-4-hydroxy-8-(methanesulfonyloxy)methyl-2-methyl-1-oxo-6-<(5,6,7-trimethoxy-1H-indole-2-yl)carbonyl>benzo<1,2-b;4,3-b'>dipyrrole-2-carboxylate