(5S)-2-((4R)-4-hydroxypyrrolidin-2-yl)-5-methyl-5-(4-(4-methylthiazol-5-yl)phenyl)-1,5-dihydro-4H-imidazol-4-one hydrochloride 、
3-methyl-2-(1-methyl-1H-pyrazol-4-yl)butanoic acid 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
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
生成 (S)-2-((2R,4R)-4-hydroxy-1-((S)-3-methyl-2-(1-methyl-1H-pyrazol-4-yl)butanoyl)pyrrolidin-2-yl)-5-methyl-5-(4-(4-methylthiazol-5-yl)phenyl)-1,5-dihydro-4H-imidazol-4-one 、 (S)-2-((2S,4R)-4-hydroxy-1-((R)-3-methyl-2-(1-methyl-1H-pyrazol-4-yl)butanoyl)pyrrolidin-2-yl)-5-methyl-5-(4-(4-methylthiazol-5-yl)phenyl)-1,5-dihydro-4H-imidazol-4-one 、 (S)-2-((2R,4R)-4-hydroxy-1-((R)-3-methyl-2-(1-methyl-1H-pyrazol-4-yl)butanoyl)pyrrolidin-2-yl)-5-methyl-5-(4-(4-methylthiazol-5-yl)phenyl)-1,5-dihydro-4H-imidazol-4-one 、 (S)-2-((2S,4R)-4-hydroxy-1-((S)-3-methyl-2-(1-methyl-1H-pyrazol-4-yl)butanoyl)pyrrolidin-2-yl)-5-methyl-5-(4-(4-methylthiazol-5-yl)phenyl)-1,5-dihydro-4H-imidazol-4-one