(1R,5S,6R,7R)-3,3-ethylenedioxy-7-benzoyloxy-6-formylbicyclo[3,3,0]octane 、
2-oxo-3,3-trimethyleneoct-5-ynephosphonic acid dimethyl ester 生成 (1R,5S,6R,7R)-3,3-Ethylenedioxy-7-benzoyloxy-6-(2-bromo-3-oxo-4,4-trimethylenenon-1-en-6-ynyl]bicyclo[3.3.0]octane