甲醇 、
tert-butyl (3S,5S)-3-allyl-3-((tert-butoxycarbonyl)amino-15N)-5-isopropyl-2,4-dioxopyrrolidine-1-carboxylate 在
sodium tetrahydroborate 作用下,
反应 0.5h,
以85%的产率得到methyl (2S,3R,4S)-3-hydroxy-5-methyl-4-[(2-methylpropan-2-yl)oxycarbonylamino]-2-[(2-methylpropan-2-yl)oxycarbonyl(15N)amino]-2-prop-2-enylhexanoate