Biflavonoids in<i>Hypericum perforatum</i>¹; Part 1. Isolation of I3, II8-Biapigenin

Abstract

From the Soxhlet extract of HYPERICUM PERFORATUM, biflavonoids have been isolated by column chromatography on Sephadex LH 20 and preparative TLC. The structure of the main compound was elucidated by UV-, (1)H- and (13)C-NMR spectroscopy and MS as I3,II8-Biapigenin.