New terpenoids from Stachys parviflora Benth |
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| Authors: | Ahmad Viqar Uddin Arshad Saima Bader Sadia Iqbal Shazia Khan Afsar Khan Saleha Suleman Hussain Javid Tareen Rasool Bakhsh Ahmed Amir |
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| Institution: | International Center for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan. vuahmad@cyber.net.pk |
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| Abstract: | Two new triterpenoidal saponins were isolated from the n-butanolic extract of Stachys parviflora (Lamiaceae). Their structures were elucidated on the basis of spectral data as stachyssaponin A; 3beta, 15alpha, 19alpha, 21beta, 22alpha-pentahydroxyolean-12-ene-28-oic acid 3-O-{alpha-L-rhamnopyranosyl-(1 --> 3)-beta-D-glucopyranoside}-22-O-{alpha-L-arabinofuranosyl-(1 --> 3)-beta-D-glucopyranoside} (1) and stachyssaponin B; 2beta, 3beta, 15alpha, 21beta-tetrahydroxyolean-12-ene-28-oic acid 2-O-alpha-L-arabinofuranoside]-3, 21-bis-O-beta-D-glucopyranoside] (2). |
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| Keywords: | NMR 1H‐NMR 13C‐NMR 2D NMR triterpenoidal saponins Stachys parviflora |
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