Maghamesin, a new prenylated flavanone from lam. (moraceae).

The chemical investigation of the methanol root extract of Lam. led to the isolation of a new prenylated flavanone, 5,7,4'-trihydroxy-3'-(3-methylbuta-1,3-dienyl)-5'-(3-methylbut-2-enyl)flavanone, trivially named maghamesin (), together with nine known compounds, 5-hydroxy-3',4',5',7-tetramethoxy-8-prenylflavanone (), cycloheterophyllin (), cyclomorusin (), isobavachalcone (), -isoferulic acid (), 24-methylenecycloartan-3α-ol (), stigmasterol (), -sitosterol () and -sitosterol-3---D-glucopyranoside (). The structures of the isolates were elucidated by extensive spectroscopic and spectrometric analyses (1D and 2D NMR, ESI-MS) and by comparison with previously reported data.