7-methoxy-3a-methyl-3-oxo-3,3a,4,5-tetrahydro-2H-cyclopenta[a]naphthalene-1-carboxylic acid methyl ester 在
盐酸 、
亚硝酸异戊酯 作用下,
生成 2-[(Z)-Hydroxyimino]-7-methoxy-3a-methyl-3-oxo-3,3a,4,5-tetrahydro-2H-cyclopenta[a]naphthalene-1-carboxylic acid methyl ester