L-Valine, N-[(1,1-dimethylethoxy)carbonyl]-3-hydroxy-N-methyl-,(1R)-2-methyl-1-[(phenylmethoxy)carbonyl]propyl ester 在
palladium dihydroxide 氢气 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
以72%的产率得到(S)-2-(tert-Butoxycarbonyl-methyl-amino)-3-hydroxy-3-methyl-butyric acid (R)-1-carboxy-2-methyl-propyl ester