{2-[6-((3aR,4R,5S,6aS)-5-Benzenesulfonyl-5-butyl-2,2-dimethyl-tetrahydro-cyclopenta[1,3]dioxol-4-yl)-benzo[1,3]dioxol-5-yl]-ethoxy}-tert-butyl-dimethyl-silane 在
叔丁基锂 作用下,
以
四氢呋喃 、
乙醚 为溶剂,
以13%的产率得到(2S,3R,4S)-(racemate)-5-n-butyl-4-<6-(2-ethyl-t-butyldimethylsilylether)-3,4-methylenedioxyphenyl>-2,3-(isopropylidenedioxy)-5-cyclopentene