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Original Article

Two new steroidal saponins from Tribulus terrestris L.

Original article

, , , , &
Pages 30-35 | Received 14 Jul 2009, Accepted 12 Oct 2009, Published online: 01 Feb 2010
 

Abstract

Two new steroidal saponins were isolated from the fruits of Tribulus terrestris L. Their structures were elucidated by spectroscopic and chemical analysis as (23S,24R,25R)-5α-spirostane-3β,23,24-triol-3-O-{α-l-rhamnopyranosyl-(1 → 2)-[β-d-glucopyranosyl-(1 → 4)]-β-d-galactopyranoside} (1) and (23S,24R,25S)-5α-spirostane-3β,23,24-triol-3-O-{α-l-rhamnopyranosyl-(1 → 2)-[β-d-glucopyranosyl-(1 → 4)]-β-d-galactopyranoside} (2).

Acknowledgement

The authors are grateful to the members of the Analytical Center in Shenyang Pharmaceutical University for the measurements of all spectra.

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