(S)-6,7-dihydro-1-((E)-3-(2,5-dimethoxyphenyl)acryloyl)-7-methyl-7-vinylisobenzofuran-4-(5H)-one 在
硝酸 、
silver(l) oxide 作用下,
以
1,4-二氧六环 为溶剂,
以65%的产率得到2-{(E)-3-[(4S,7S)-4-(tert-butyl-diphenyl-silanyloxy)-7-methyl-7-vinyl-4,5,6,7-tetrahydro-isobenzofuran-1-yl]-3-hydroxy-propenyl}-[1,4]benzoquinone