Cyclopropyl-carbamic acid (4aR,5R,6R,7R)-7-(tert-butyl-dimethyl-silanyloxy)-3,4a,5-trimethyl-2-oxo-2,4,4a,5,6,7-hexahydro-naphtho[2,3-b]furan-6-yl ester 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
以99%的产率得到Cyclopropyl-carbamic acid (4aR,5R,6R,7R)-7-hydroxy-3,4a,5-trimethyl-2-oxo-2,4,4a,5,6,7-hexahydro-naphtho[2,3-b]furan-6-yl ester