tert-butyl (R)-2-((S)-1-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-1-hydroxy-2-methoxy-2-oxoethyl)-5-oxo-2,5-dihydro-1H-pyrrole-1-carboxylate 在
甲醇 、 sodium tetrahydroborate 作用下,
反应 2.75h,
以3.23 g的产率得到methyl (S)-2-[(R)-1-tert-butoxycarbonyl-5-oxopyrrolidin-2-yl]-2-[(S)-2,2-dimethyl-1,3-dioxolan-4-yl]-2-hydroxyacetate