(S)-2-methoxy-3-methylbutanoic acid 、 (10S,13S)-13-amino-10-propan-2-yl-8,37,40-trioxa-4,11,22,34,39-pentazadecacyclo[27.6.1.12,5.16,9.115,19.118,21.07,20.020,24.023,28.033,36]tetraconta-1(35),2,4,6,9(39),15(38),16,18,23(28),24,26,29(36),30,32-tetradecaen-12-one 在
1-羟基苯并三唑 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 18.0h,
以48%的产率得到(2S)-2-methoxy-3-methyl-N-[(10S,13S)-12-oxo-10-propan-2-yl-8,37,40-trioxa-4,11,22,34,39-pentazadecacyclo[27.6.1.12,5.16,9.115,19.118,21.07,20.020,24.023,28.033,36]tetraconta-1(35),2,4,6,9(39),15(38),16,18,23(28),24,26,29(36),30,32-tetradecaen-13-yl]butanamide