Acetic acid (1R,2R,3S,4S,6R,7R,8S,14R)-6-(4-methoxy-phenylcarbamoyloxy)-2,4,7,14-tetramethyl-9,12-dioxo-4-vinyl-tricyclo[5.4.3.01,8]tetradec-3-yl ester 在
sodium hydroxide 作用下,
以30%的产率得到(4-Methoxy-phenyl)-carbamic acid (1R,2R,3S,4S,6R,7R,8S,14R)-3-hydroxy-2,4,7,14-tetramethyl-9,12-dioxo-4-vinyl-tricyclo[5.4.3.0
1,8]tetradec-6-yl ester