3-(5-乙基-1,2,4-噁二唑-3-基)苯甲酸 、 ethyl 2-(3-aminopropanoylamino)-4-methylthiazole-5-carboxylate 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,
以21%的产率得到ethyl 2-(3-(3-(5-ethyl-1,2,4-oxadiazol-3-yl)benzamido)propanamido)-4-methylthiazole-5-carboxylate