methyl (1S,3S,4R)-4-tert-(butoxycarbonyl)methyl-4-hydroxy-3-(methoxycarbonyl)methyl-1-methyl-2-oxocyclohexanecarboxylate 在
伯吉斯试剂 作用下,
以72%的产率得到(S)-4-tert-Butoxycarbonylmethyl-3-methoxycarbonylmethyl-1-methyl-2-oxo-cyclohex-3-enecarboxylic acid methyl ester