Benzofuran derivatives from Eupatorium fortunei.

A pair of epimers of benzofuranols and a benzofuran glucoside were isolated from a traditional Chinese medicine Eupatorium fortunei. Their structures and the relative stereochemistry were elucidated on the basis of the spectral analysis and chemical transformation as 3beta, 6-dimethyl-2, 3-dihydrobenzofuran-2alpha-ol; 3beta, 6-dimethyl-2, 3-dihydrobenzofuran-2beta-ol and 3beta, 6-dimethyl-2, 3-dihydrobenzofuran 2beta-O-beta-D-glucopyranoside.