(1R,4aS)-6-Formyl-1,4a-dimethyl-5-(4-methyl-3-oxo-pentyl)-1,2,3,4,4a,7,8,8a-octahydro-naphthalene-1-carboxylic acid methyl ester 在
锌 作用下,
生成 (4R,11bS)-9-Hydroxy-9-isopropyl-4,11b-dimethyl-1,2,3,4,4a,5,6,7,9,10,11,11b-dodecahydro-8-oxa-cyclohepta[a]naphthalene-4-carboxylic acid methyl ester