Planta Med 2013; 79(16): 1565-1571
DOI: 10.1055/s-0033-1350808
Natural Product Chemistry
Original Papers
Georg Thieme Verlag KG Stuttgart · New York

Two New Flavonol Glycosides and a Metabolite Profile of Bryophyllum pinnatum, a Phytotherapeutic Used in Obstetrics and Gynaecology

Karin Fürer
1   Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
2   Department of Obstetrics, University Hospital Zurich, Zürich, Switzerland
,
Melanie Raith
1   Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
,
Rudolf Brenneisen
3   Department of Clinical Research, University of Bern, Bern, Switzerland
,
Monica Mennet
4   Weleda AG, Arlesheim, Switzerland
,
Ana Paula Simões-Wüst
5   Research Department, Paracelsus Hospital Richterswil, Richterswil, Switzerland
,
Ursula von Mandach
2   Department of Obstetrics, University Hospital Zurich, Zürich, Switzerland
,
Matthias Hamburger
1   Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
,
Olivier Potterat
1   Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
› Author Affiliations
Further Information

Publication History

received 28 February 2013
revised 11 June 2013

accepted 11 August 2013

Publication Date:
26 September 2013 (online)

Abstract

Bryophyllum pinnatum is a succulent perennial plant native to Madagascar which is used in anthroposophical medicine to treat psychiatric disorders and as a tocolytic agent to prevent premature labour. We performed a metabolite profiling study in order to obtain a comprehensive picture of the constituents in B. pinnatum leaves and to identify chromatographic markers for quality control and safety assessment of medicinal preparations. Preliminary HPLC-PDA-ESIMS analyses revealed that flavonoid glycosides were the main UV-absorbing constituents in the MeOH extract of B. pinnatum. Two phenolic glucosides, syringic acid β-D-glucopyranosyl ester (1) and 4′-O-β-D-glucopyranosyl-cis-p-coumaric acid (2), as well as nine flavonoids (3-11) including kaempferol, quercetin, myricetin, acacetin, and diosmetin glycosides were unambiguously identified by 1H and 2D NMR analysis after isolation from a MeOH extract. The flavonol glycosides quercetin 3-O-L-arabinopyranosyl-(1 → 2)-α-L-rhamnopyranoside 7-O-D-glucopyranoside (3) and myricetin 3-O-L-arabinopyranosyl-(1 → 2)-α-L-rhamnopyranoside (4) were new natural products. With the aid of HPLC-PDA-APCIMS and authentic references isolated from the related species B. daigremontianum, the presence of four bufadienolides, bersaldegenin-1-acetate (12), bryophyllin A (13), bersaldegenin-3-acetate (14), and bersaldegenin-1,3,5-orthoacetate (15) was detected in B. pinnatum.

Supporting Information

 
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