2-Methylene-7-((2S,3R)-3-vinyl-oxiranyl)-heptanoic acid 1-methyl-allyl ester 、 (S)-1-{(2R,3R,5S)-3-(tert-Butyl-dimethyl-silanyloxy)-5-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-tetrahydro-furan-2-yl}-prop-2-en-1-ol 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
生成 (8S,9S)-9-((S)-1-{(2R,3R,5S)-3-(tert-Butyl-dimethyl-silanyloxy)-5-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-tetrahydro-furan-2-yl}-allyloxy)-8-hydroxy-2-methylene-undec-10-enoic acid 1-methyl-allyl ester