Acetic acid 2-((2R,4R,4aS,5aR,10aS,11aR)-4-hydroxy-5a,9,9-trimethyl-dodecahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-2-ylmethyl)-allyl ester 在
N-甲基吲哚酮 、
四丙基高钌酸铵 作用下,
以
二氯甲烷 为溶剂,
以71%的产率得到Acetic acid 2-((2R,4aR,5aR,10aS,11aR)-5a,9,9-trimethyl-4-oxo-dodecahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-2-ylmethyl)-allyl ester