Biflavonoids in Hypericum perforatum1; Part 1. Isolation of I3, II8-Biapigenin.
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.
Berghöfer
R
R
Institut für Pharmazeutische Biologie, Deutschhausstraße 17S D-3550 Marburg/Lahn, Federal Republic of Germany.
Hölzl
J
J