Furofuran lignans from the bark of Magnolia kobus.

Journal Article

Publication Abstract

A new furofuran lignan (1) along with four knowns (2-5) were isolated from the bark of Magnolia kobus. Their structures were elucidated as (+)-2α-(3',4'-dimethoxyphenyl)-6α-(3"-hydroxy-4",5"-dimethoxyphenyl)-3,7-dioxabicyclo[3.3.0]octane (1), (+)-sesamin (2), (+)-yangambin (3), (+)-kobusin (4) and (+)-eudesmin (5) on the basis of their comprehensive spectroscopic analysis including 2D NMR and by comparison of their spectral data with those of related compounds.