Three new flavonoid glycosides from the aerial parts of Graptophyllum grandulosum Turril (Acanthaceae) |
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| Institution: | 1. Faculty of Science, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon;2. Service Commun d’Analyses, Institut de Chimie Moléculaire de Reims (ICMR), CNRS UMR 7312, Bat. 18 B.P. 1039, 51687 Reims Cedex 2, France;3. Groupe Isolement et Structure, Institut de Chimie Moléculaire de Reims (ICMR), CNRS UMR 7312, Bat. 18 B.P. 1039, 51687 Reims Cedex 2, France;1. Department of Chemistry, University of Douala, Faculty of Sciences, 24157 Douala, Cameroon;2. Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, United Kingdom;3. Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, 33501 Bielefeld, Germany;1. Chulabhorn Research Institute, Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand;2. Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand;1. CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China;2. Southwest University for Nationalities, Chengdu 610041, PR China;3. Syngenta Jealott’s Hill International Research Centre, Berkshire RG42 6EY, UK;1. College of Pharmacy, Guizhou University, Guiyang 550025, Guizhou, PR China;2. The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, Guizhou, PR China;3. The Key Laboratory of Chemistry for Natural Products of Guizhou Medical University, Guiyang 550002, Guizhou, PR China;4. Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou 571158, Hainan, PR China;1. Key Laboratory of Tobacco Chemistry of Yunnan Province, China Tobacco Yunnan Industrial Co., Ltd, Kunming, PR China;2. School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Nature Products, Kunming, PR China |
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| Abstract: | Grandulosides A-C, three new flavonoid glycosides, were isolated from the aerial parts of Graptophyllum grandulosum Turill and identified as chrysoeriol-7-O-β-d-apiofuranosyl-(1 → 2)-β-d-xylopyranoside (1), chrysoeriol-7-O-4′′′-O-acetyl-β-d-apiofuranosyl-(1 → 2)]-β-d-xylopyranoside (2) and 7-O-α-l-rhamnopyranosyl-(1 → 6)-β-d-(4′′-Sodium hydrogeno sulfate) glucopyranoside (3). Four known compounds, chrysoeriol-7-O-β-d-xyloside (4), isorhamnetin-3-O-α-l-rhamnopyranosyl-(1 → 6)-β-d-glucopyranoside (5), luteolin-7-O-β-d-apiofuranosyl-(1 → 2)-β-d-xylopyranoside (6) and sucrose (7) were also obtained. The structures of these compounds were established by interpretation of their spectral data, mainly HR-TOFESIMS, 1D-NMR (1H, 13C) and 2D-NMR (COSY, NOESY, HSQC and HMBC) and by comparison with the literature data. |
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| Keywords: | Flavonoid glycosides Granduloside |
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