(2R,3S,4R)-1-{2-[(1S,2S,5S)-2-(tert-Butyl-dimethyl-silanyloxy)-1-methyl-5-((2R,3R,6S)-3-methyl-1,7-dioxa-spiro[5.5]undec-2-yl)-hexyl]-[1,3]dithian-2-yl}-3-methoxy-5-methyl-hexane-2,4-diol 在
4-二甲氨基吡啶 、 poly(hydrogen fluoride)pyridine 、
三乙胺 作用下,
以
甲苯 为溶剂,
反应 6.0h,
生成 (R)-3-Hydroxy-3-(4-methyl-2,5-dioxo-2,5-dihydro-furan-3-yl)-propionic acid (1R,2S,3R)-3-hydroxy-4-{2-[(1S,2S,5S)-2-hydroxy-1-methyl-5-((2R,3R,6S)-3-methyl-1,7-dioxa-spiro[5.5]undec-2-yl)-hexyl]-[1,3]dithian-2-yl}-1-isopropyl-2-methoxy-butyl ester