(2S,4S,7S,8S)-2-((4S,5R,6S)-6-((S)-but-3-yn-2-yl)-2,2,5-trimethyl-1,3-dioxan-4-yl)-7-methoxy-8-((4R,5R,6S)-2,2,5-trimethyl-6-((S,E)-4-methylhex-4-en-2-yl)-1,3-dioxan-4-yl)non-5-yn-4-ol 在
polymer-supported sulfonic acid 作用下,
以
甲醇 为溶剂,
反应 16.0h,
以99%的产率得到(3S,4S,5R,6S,7S,9S,12S,13S,14R,15R,16S,17S,E)-12-methoxy-3,5,7,13,15,17,19-heptamethylhenicosa-19-en-1,10-diyne-4,6,9,14,16-pentaol