methyl 8-oxooctanoate 、
4-[(tert-butyldimethylsilyl)oxy]cyclopent-2-enone 、 alkaline earth salt of/the/ methylsulfuric acid 在
(lithium)2(CN)(methyl)2cuprate 作用下,
以
四氢呋喃 为溶剂,
以51%的产率得到(Z)-8-[(1R,2S,3S)-3-(tert-Butyl-dimethyl-silanyloxy)-2-((E)-4-methyl-4-trimethylsilanyloxy-oct-1-enyl)-5-oxo-cyclopentyl]-8-hydroxy-oct-4-enoic acid methyl ester