New Compounds from the Roots of Corsican <i>Calicotome Villosa</i> (Poir.) Link.: Two Pterocarpans and a Dihydrobenzofuran

Abstract

Three new compounds, a dihydrobenzofuran (coumaran) derivative (compound 1) and two pterocarpans (compounds 2 and 3) were isolated from a root extract of Calicotome villosa growing wild in Corsica. Their structures were elucidated using 1D and 2D NMR spectroscopy and MS/MS as 2-(1-methylethenyl)-5-hydroxy-6-carbomethoxy-2,3-dihydro-benzofuran, 4,9-dihydroxy-3-methoxy-2-dimethylallylpterocarpan, and 4,9-dihydroxy-3′,3′-dimethyl-2,3-pyranopterocarpan.

Keywords

• <i>Calicotome villosa</i>
• root extract
• pterocarpan
• dihydrobenzofuran
• 1D and 2D NMR