6-{2,2-di-tert-butyl-6-[4-(tert-butyldimethylsilanyloxy)-(3R)-3-methylbutyl]-(4S,6S)-[1,3,2]dioxasilinan-4-yl}-(5S)-5-(4-methoxybenzyloxy)-(E)-hex-2-enoic acid methyl ester 在
甲醇 、 camphor-10-sulfonic acid 作用下,
反应 2.5h,
以93%的产率得到6-[2,2-di-tert-butyl-6-(4-hydroxy-(3R)-3-methylbutyl)-(4S,6S)-[1,3,2]dioxasilinan-4-yl]-(5S)-5-(4-methoxybenzyloxy)-(E)-hex-2-enoic acid methyl ester