2-trimethylsilylethyl (E)-4-[bis(2,2,2-trifluoroethoxy)phosphoryl]-2-methylbut-2-enoate 、
prop-2-enyl (E,2R,3R,4R,5S,6S)-3,5-diacetyloxy-4,6,8-trimethyl-9-oxo-2-[(4R,5R,6S)-2,2,5-trimethyl-6-[(2S)-1-oxopropan-2-yl]-1,3-dioxan-4-yl]-9-[2,5,8-tris(methoxymethoxy)-3,7-dimethyl-4-prop-2-enoxy-6-(2-trimethylsilylethoxycarbonylamino)naphthalen-1-yl]non-7-enoate 在
正丁基锂 作用下,
以
乙醚 为溶剂,
以47%的产率得到prop-2-enyl (E,2R,3R,4R,5S,6S)-3,5-diacetyloxy-4,6,8-trimethyl-9-oxo-2-[(4R,5R,6R)-2,2,5-trimethyl-6-[(2R,3Z,5E)-6-methyl-7-oxo-7-(2-trimethylsilylethoxy)hepta-3,5-dien-2-yl]-1,3-dioxan-4-yl]-9-[2,5,8-tris(methoxymethoxy)-3,7-dimethyl-4-prop-2-enoxy-6-(2-trimethylsilylethoxycarbonylamino)naphthalen-1-yl]non-7-enoate