Acetic acid (Z)-(S)-3-{(2R,3R,5S,6S)-2,5-dimethyl-6-[(2E,4E)-3-methyl-5-((3R,4R,5R,7S)-7-methyl-4-triethylsilanyloxy-1,6-dioxa-spiro[2.5]oct-5-yl)-penta-2,4-dienyl]-tetrahydro-pyran-3-ylcarbamoyl}-1-methyl-allyl ester 在
四丁基氟化铵 、
溶剂黄146 作用下,
以
四氢呋喃 为溶剂,
反应 0.75h,
以85%的产率得到Acetic acid (Z)-(S)-3-{(2R,3R,5S,6S)-6-[(2E,4E)-5-((3R,4R,5R,7S)-4-hydroxy-7-methyl-1,6-dioxa-spiro[2.5]oct-5-yl)-3-methyl-penta-2,4-dienyl]-2,5-dimethyl-tetrahydro-pyran-3-ylcarbamoyl}-1-methyl-allyl ester