methyl (C1,C2-13C2)-<(2,4-dimethoxybenzyl)oxy>acetate 、 1-O-tert-butyl 2-O-[(1E,3S,4S,5S,7S,8R,9E,12S,14S,15R,16S,18R)-15-[tert-butyl(dimethyl)silyl]oxy-14,16-dimethoxy-7-[(4-methoxyphenyl)methoxy]-1-[(1R,3R,4R)-3-methoxy-4-tri(propan-2-yl)silyloxycyclohexyl]-2,4,10,12,18-pentamethyl-19-oxo-8-prop-2-enyl-5-tri(propan-2-yl)silyloxynonadeca-1,9-dien-3-yl] (2S)-piperidine-1,2-dicarboxylate 在
lithium diisopropyl amide 作用下,
生成