3-(3'',4''-dimethoxybenzoyl)-2-(3',4'-methylenedioxy-α-phenylthiobenzyl)butyrolactone 在
sodium tetrahydroborate 、
正丁基锂 、 trimethoxonium tetrafluoroborate 作用下,
生成
4-benzoyloxy-3-hydroxymethyl-1-(3',4'-methylenedioxyphenyl)-6,7-dimethoxy-1,2,3,4-tetrahydro-2-naphthoic acid γ-lactone