(4aS,8aS)-8-[(Z)-2-((1aR,3aS,5S,7aS,7bS)-5-Hydroxy-1a,4,4,7a-tetramethyl-octahydro-1-oxa-cyclopropa[a]naphthalen-7b-yl)-vinyl]-2,2,7-trimethyl-1,3,4,5,6,8a-hexahydro-2H-naphthalene-4a-carboxylic acid methyl ester 在
吡啶 、
臭氧 、
二甲基硫 作用下,
以
二氯甲烷 为溶剂,
反应 4.0h,
以80%的产率得到(1aS,3aS,7aR,7bR)-1a,6,6-Trimethyl-7b-[(Z)-2-((1aR,3aR,7aS,7bS)-1a,4,4,7a-tetramethyl-5-oxo-octahydro-1-oxa-cyclopropa[a]naphthalen-7b-yl)-vinyl]-octahydro-1-oxa-cyclopropa[a]naphthalene-3a-carboxylic acid methyl ester