、
(2S,4R)-1-[(2S)-2-(cyclopentyloxycarbonylamino)-3,3-dimethylbutanoyl]-4-(7-methoxy-2-phenylquinolin-4-yl)oxypyrrolidine-2-carboxylic acid 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
N,N-二甲基甲酰胺 为溶剂,
以27%的产率得到(2-amino-2-oxoethyl)-[(1S,2S)-1-[[(2S,4R)-1-[(2S)-2-(cyclopentyloxycarbonylamino)-3,3-dimethylbutanoyl]-4-(7-methoxy-2-phenylquinolin-4-yl)oxypyrrolidine-2-carbonyl]amino]-2-ethenylcyclopropyl]phosphinic acid