(R)-methoxytrifluoromethylphenylacetyl chloride 、
diethyl (1R,9S,12S,13S,15R)-15-ethenyl-12,15-dihydroxy-4,5-dimethoxy-11-oxo-10-azatetracyclo[8.5.0.01,13.02,7]pentadeca-2,4,6-triene-9,13-dicarboxylate 在
吡啶 、
4-二甲氨基吡啶 作用下,
生成 diethyl (1R,9S,12S,13S,15R)-15-ethenyl-15-hydroxy-4,5-dimethoxy-11-oxo-12-[(2S)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl]oxy-10-azatetracyclo[8.5.0.01,13.02,7]pentadeca-2,4,6-triene-9,13-dicarboxylate