(3R,4R)-4-[tert-butyl(dimethyl)silyl]oxy-3-[(3S)-3-[tert-butyl(dimethyl)silyl]oxyoct-1-ynyl]-2-methylidenecyclopentan-1-one 、 alkaline earth salt of/the/ methylsulfuric acid 在
三甲基氯硅烷 作用下,
以
四氢呋喃 为溶剂,
以78%的产率得到7-{(1R,2S,3R)-3-(tert-Butyl-dimethyl-silanyloxy)-2-[(S)-3-(tert-butyl-dimethyl-silanyloxy)-oct-1-ynyl]-5-oxo-cyclopentyl}-heptanoic acid methyl ester