(3aS,4R,6R,6aR)-6-(benzoylamino-(-)-8-phenylmenthoxycarbonyl-methyl)-2,2-dimethyl-tetrahydro-cyclopenta[1,3]dioxole-4-carboxylic acid 、
三甲基硅烷化重氮甲烷 以
甲醇 为溶剂,
反应 0.5h,
以65%的产率得到methyl (3aS,4R,6R,6aR,1'R)-6-(benzoylamino-(-)-8-phenylmenthoxycarbonyl-methyl)-2,2-dimethyl-tetrahydro-cyclopenta[1,3]dioxole-4-carboxylate