(4S)-2-<2,6-dimethyl-4-<<(1,1-dimethylethyl)diphenylsilyl>oxy>-1-oxo-5-heptenyl>-hydrazinecarboxylic acid 2,2,2-trichloroethyl ester 在
lead(IV) acetate 作用下,
以
二氯甲烷 为溶剂,
以68%的产率得到(2R,3S,5R)-<3-<<(1,1-dimethylethyl)diphenylsilyl>oxy>-5-methyl-2-(1-methylethenyl)-6-oxo-1-piperidinyl>-carbamic acid 2,2,2-trichloroethyl ester