(E)-(1R,2R,4R,5S,6R,9S,10R)-9,11-Bis-(tert-butyl-dimethyl-silanyloxy)-1-[3-(2,5-dimethyl-pyrrol-1-yl)-2,5-dimethoxy-phenyl]-5-methoxy-2,6,8,10-tetramethyl-undec-7-ene-1,4-diol 、
碘甲烷 在
potassium hydride 作用下,
以
乙二醇二甲醚 为溶剂,
生成
1-{3-[(E)-(1R,2S,4S,5R,6S,9R,10S)-9,11-Bis-(tert-butyl-dimethyl-silanyloxy)-1,4,5-trimethoxy-2,6,8,10-tetramethyl-undec-7-enyl]-2,5-dimethoxy-phenyl}-2,5-dimethyl-1H-pyrrole