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Eremosides A – C,New Iridoid Glucosides from Eremostachys loasifolia
Authors:Bakhat Ali  Rashad Mehmood  Uzma Rasheed Mughal  Abdul Malik  Muhammad Safder  Riaz Hussain  Muhammad Imran  Rasool Bakhsh Tareen
Affiliation:1. International Center for Chemical and Biological Sciences, H.?E.?J. Research Institute of Chemistry, University of Karachi, Karachi‐75270, Pakistan, (phone: +92‐21‐4824926;2. fax: +92‐21‐4819018‐9);3. Department of Botany, University of Balochistan, Sariab Road, Quetta, Pakistan
Abstract:Eremosides A–C ( 1 – 3 ), three new iridoid glucosides, were isolated from the AcOEt‐soluble fraction of the EtOH extract of the whole plant of Eremostachys loasifolia, along with buddlejoside B ( 4 ), 10‐O‐benzoylcatalpol ( 5 ), and pakiside A ( 6 ) reported for the first time from this species. The structures of these compounds were elucidated by spectroscopic data including 2D‐NMR, FAB‐MS, ESI‐MS, as well as by acid and basic hydrolyses.
Keywords:Eremostachys loasifolia  Eremosides A       C  Iridoid glucosides  Glucosides
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