S-苯基硫代苯基砜 、
methyl 2-oxo-7α,10aβ-dimethyl-8β-methoxy-4α-(1-methylethyl)-1,4,5,6,6aα,7,8,9,10,10a-decahydro-2H-naphtho<2,1-c>pyran-7β-carboxylate 在
正丁基锂 、
二异丙胺 作用下,
生成 methyl 2-oxo-7α,10aβ-dimethyl-8β-methoxy-4α-(1-methylethyl)-1β-(phenylthio)-1,4,5,6,6aα,7,8,9,10,10a-decahydro-2H-naphtho<2,1-c>pyran-7β-carboxylate 、 methyl 2-oxo-7α,10aβ-dimethyl-8β-methoxy-4α-(1-methylethyl)-1α-(phenylthio)-1,4,5,6,6aα,7,8,9,10,10a-decahydro-2H-naphtho<2,1-c>pyran-7β-carboxylate