8-methoxy-6-carboxy-3,4-dihydrocarbostyril 、 (3R)-5-[(2S)-3-amino-1,1,1-trifluoro-2-hydroxypropan-2-yl]-7-(4-fluorophenyl)-3-methyl-2H-furo[2,3-c]pyridine-3-carboxamide 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
以72 %的产率得到(3R)-7-(4-fluorophenyl)-3-methyl-5-[(2S)-1,1,1-trifluoro-2-hydroxy-3-[(8-methoxy-2-oxo-3,4-dihydro-1H-quinoline-6-carbonyl)amino]propan-2-yl]-2H-furo[2,3-c]pyridine-3-carboxamide