2-(2,4-difluorophenyl)-3-methylimidazole-4-carboxylic acid 、 (8S,11S)-7-oxa-10,13,17,19-tetrazapentacyclo[15.6.1.
12,6.1
8,11.0
20,24]hexacosa-1(23),2(26),3,5,18,20(24),21-heptaene-12-one 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
二氯甲烷 、
N,N-二甲基甲酰胺 为溶剂,
以23 mg的产率得到(8S,11S)-10-[2-(2,4-difluorophenyl)-3-methylimidazole-4-carbonyl]-7-oxa-10,13,17,19-tetrazapentacyclo[15.6.1.1
2,6.1
8,11.0
20,24]hexacosa-1(23),2(26),3,5,18,20(24),21-heptaen-12-one