、
在
copper diacetate 、
sodium ascorbate 作用下,
以
水 、
叔丁醇 为溶剂,
以59%的产率得到2-[(1S,4S,10S,13R,14S,16S)-14-[[4-[9-[(1S,2R)-1-benzamido-3-[[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-diacetyloxy-2-benzoyloxy-1,9-dihydroxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-15-yl]oxy]-3-oxo-1-phenylpropan-2-yl]oxy-9-oxononyl]triazol-1-yl]methyl]-4-[3-(diaminomethylideneamino)propyl]-2,5,8,11,20-pentaoxo-3,6,9,12,19-pentazatricyclo[11.5.2.016,19]icosan-10-yl]acetic acid