(2R,3S)-4-(tert-Butyl-dimethyl-silanyloxy)-3-[(R)-5-(tert-butyl-dimethyl-silanyloxy)-4-(tert-butyl-dimethyl-silanyloxymethyl)-1-hydroxy-pent-3-enyl]-7-methoxy-2,3,8-trimethyl-2,3-dihydro-naphtho[1,2-b]furan-6,9-dione 在
4 A molecular sieve 、
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 1.5h,
以73%的产率得到(2R,3S)-3-((R)-1,5-Dihydroxy-4-hydroxymethyl-pent-3-enyl)-4-hydroxy-7-methoxy-2,3,8-trimethyl-2,3-dihydro-naphtho[1,2-b]furan-6,9-dione