7-(tert-butyl-dimethyl-silanyloxy)-8-(3,4-dihydroxy-phenyl)-4-methoxy-bicyclo[3.3.1]non-3-ene-2,9-dione 在
Celite 、 silver carbonate 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以96%的产率得到(1S,5R,7S,8R)-(+)-7-(tert-butyl-dimethyl-silanyloxy)-8-(3,4-dioxo-cyclohexa-1,5-dienyl)-4-methoxy-bicyclo[3.3.1]non-3-ene-2,9-dione