Acetic acid (1R,1aS,4R,4aR,7aS,7bR)-4,7-dimethyl-1-(4-methyl-pentyl)-1a,2,3,4,4a,5,7a,7b-octahydro-1H-cyclobuta[de]naphthalen-1-ylmethyl ester 在
chromium trioxide-pyridine complex 作用下,
以
二氯甲烷 为溶剂,
以10 g的产率得到Acetic acid (1R,1aS,4R,4aR,7aS,7bR)-4,7-dimethyl-1-(4-methyl-pentyl)-5-oxo-1a,2,3,4,4a,5,7a,7b-octahydro-1H-cyclobuta[de]naphthalen-1-ylmethyl ester