2-(3-isobutoxyphenyl)acetic acid 、 methyl (R)-2-(8-(trifluoromethyl)-2,3,4,5-tetrahydro-1H-pyrido[2,3-e][1,4]diazepin-5-yl)acetate 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2.36 g的产率得到methyl (R)-2-(4-(2-(3-isobutoxyphenyl)acetyl)-8-(trifluoromethyl)-2,3,4,5-tetrahydro-1H-pyrido[2,3-e][1,4]diazepin-5-yl)acetate