Benzoic acid (2R,3R,5R,7S,8R,9R)-7-[2-(tert-butyl-phenyl-silanyloxy)-ethyl]-2-((S)-1-methoxy-but-3-enyl)-3-(2-methoxy-ethoxymethoxy)-4,4,8-trimethyl-1,6-dioxa-spiro[4.5]dec-9-yl ester 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 2.5h,
以97%的产率得到Benzoic acid (2R,3R,5R,7S,8R,9R)-7-(2-hydroxy-ethyl)-2-((S)-1-methoxy-but-3-enyl)-3-(2-methoxy-ethoxymethoxy)-4,4,8-trimethyl-1,6-dioxa-spiro[4.5]dec-9-yl ester