(1R,2S)-1-amino-N-(cyclopropylsulfonyl)-2-vinylcyclopropanecarboxamide 、 (1R,12E,22S,25S)-3,23-dioxo-22-propan-2-yl-2-oxa-19-thia-4,21,24,28-tetrazapentacyclo[22.2.1.14,7.117,20.06,11]nonacosa-6,8,10,12,17,20(28)-hexaene-25-carboxylic acid 在
2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 12.0h,
以36 mg的产率得到(1R,12E,22S,25S)-N-((1R,2S)-1-{[(cyclopropylsukfonyl)amino]carbonyl}-2-ethenylcyclopropyl)-22-(1-methylethyl)-3,23-dioxo-2-oxa-19-thia-4,21,24,28-tetraazapentacyclo[22.2.1.1(4,7).1(17,20).0(6,11)]octacosa-6,8,10,12,17,20(28)-hexaene-25-carboxamide