(1R,3S,6S,7S,8aS)-3-(tert-Butyl-dimethyl-silanyloxymethyl)-1-hydroxy-4-oxo-hexahydro-pyrrolo[1,2-a]pyrazine-2,6,7-tricarboxylic acid 2-benzyl ester 6-tert-butyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙醇 为溶剂,
反应 24.0h,
以58%的产率得到tert-butyl (3S,6S,7S,9S)-(tert-butyldimethylsilanyloxymethyl)-7-carboxy-4-oxooctahydropyrrolo[1,2-a]pyrazine-6-carboxylate