(3R)-3-[(1,1-dimethylethoxycarbonyl)amino]4-(2-benzyloxy-5-fluorophenyl)butanoic acid 、
2-(trifluoromethyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine hydrochloride 在
N-羟基-7-氮杂苯并三氮唑 、
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
二氯甲烷 为溶剂,
以86%的产率得到7-[(3R)-3-[(1,1-dimethylethoxycarbonyl)amino]-4-(2-benzyloxy-5-fluorophenyl)butanoyl]-2-(trifluoromethyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine