benzyl (2S,3R,4S)-3,4-dihydroxypyrrolidine-2-carboxylate hydrochloride 、
N-Boc-L-叔亮氨酸 在
N-甲基吗啉 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
DMF (N,N-dimethyl-formamide) 、
二氯甲烷 为溶剂,
以79%的产率得到benzyl (2S,3R,4S)-1-[(2S)-3,3-dimethyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]-3,4-dihydroxypyrrolidine-2-carboxylate