5-苄基异噁唑-3-羧酸 、
(S)-3-amino-1,5-dimethyl-1,3,4,5-tetrahydro-benzo[b][1,4]diazepin-2-one 在
N-甲基吗啉 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
乙腈 为溶剂,
以130 mg的产率得到(S)-5-benzyl-N-(1,5-dimethyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-yl)isoxazole-3-carboxamide