(2R,3S)-3-amino-1-((S)-6-ethyl-2,2-spirocyclopentylchroman-4-ylamino)-4-phenylbutan-2-ol; dihydrochloride salt 、
6-(2-fluorophenyl)-3-methyl-5-oxo-1,2,3,5-tetrahydroindolizine-8-carboxylic acid 、
三氟乙酸 在
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
N,N-二甲基甲酰胺 为溶剂,
生成 N-((2S,3R)-4-((S)-6-ethyl-2,2-spirocyclopentylchroman-4-ylamino)-3-hydroxy-1-phenylbutan-2-yl)-6-(2-fluorophenyl)-5-oxo-1,2,3,5-tetrahydroindolizine-8-carboxamide; trifluoroacetate salt