New oleanane saponins from Schefflera kwangsiensis |
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| Institution: | 1. Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People''s Republic of China;2. JNU-HKUST Joint Laboratory for Neuroscience & Innovative Drug Research, Jinan University, Guangzhou 510632, People''s Republic of China;3. College of Pharmacy, Wannan Medical College, Wuhu 241000, People''s Republic of China;1. State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, 100029 Beijing, PR China;2. Institute of Chemical Sciences, Gomal University, Dera Ismail Khan, KP, Pakistan;1. Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China;2. Yunnan Academy of Tobacco Science, China Tobacco Yunnan Industrial Co., Ltd., Kunming 650106, PR China;1. Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;2. Department of Microbiology and Natural Products Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;3. National Center for Genetic Engineering and Biotechnology (BIOTEC), Thailand Science Park, Klong Luang, Pathumthani 12120, Thailand;1. Department of Chemistry, University of Nairobi, P.O. Box 30197-00100, Nairobi, Kenya;2. Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam, Germany;3. Global Emerging Infections Surveillance (GEIS) Program, United States Army Medical Research Unit-Kenya (USAMRU-K), Kenya Medical Research Institute (KEMRI) – Walter Reed Project, Kisumu and Nairobi, Kenya;1. Department of Organic Chemistry, Faculty of Science, The University of Yaoundé I, P.O. Box 812, Yaounde, Cameroon;2. Institute of Medical Research and Medicinal Plant Studies, Ministry of Scientific Research and Innovation, P.O. Box 6163, Yaoundé, Cameroon;3. Department of Chemistry, University of Botswana, Private Bag 00704, Gaborone, Botswana;4. Department of Chemistry, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, Scotland |
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| Abstract: | Four new oleanane-type triterpenoid saponins, schefflesides I–L (1–4), were isolated from the aerial parts of Schefflera kwangsiensis. Their structures were established as oleanolic acid 3-O-β-d-glucopyranosyl (1 → 2) α-l-arabinopyranosyl (1 → 4)]-β-d-(6-O-methyl) glucuronopyranoside (1), 22α-hydroxyoleanolic acid 3-O-α-l-arabinopyranosyl (1 → 4)-β-d-glucuronopyranoside (2), hederagenin 3-O-α-l-arabinopyranosyl (1 → 4)-β-d-glucuronopyranoside (3) and oleanolic acid 28-O-β-d-glucopyranosyl (1 → 2)-β-d-glucuronopyranosyl ester (4) by spectroscopic analyses (HRESIMS, 1D and 2D NMR) and chemical methods. |
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| Keywords: | Araliaceae Triterpenoid saponin |
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