Pyridine-2-carboxylic acid [(3S,6S,12R,15S,16R,19S,22S)-3-(4-dimethylamino-benzyl)-12-ethyl-4,16-dimethyl-2,5,11,14,18,21,24-heptaoxo-19-phenyl-17-oxa-1,4,10,13,20-pentaaza-tricyclo[20.4.0.0
6,10]hexacos-15-yl]-amide 以
硫酸 为溶剂,
以80%的产率得到(3S,6S,12R,15S,16R,19S,22S)-15-amino-3-[[4-(dimethylamino)phenyl]methyl]-12-ethyl-4,16-dimethyl-19-phenyl-17-oxa-1,4,10,13,20-pentazatricyclo[20.4.0.06,10]hexacosane-2,5,11,14,18,21,24-heptone