Unprecedented furan-2-carbonyl C-glycosides and phenolic diglycosides from Scleropyrum pentandrum |
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| Affiliation: | 1. Chulabhorn Research Institute and Chulabhorn Graduate Institute, Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand;2. The Center of Excellence on Environmental Health, Toxicology and Management of Chemicals, Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand;3. Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand;1. Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, UK;2. Oxford NIHR Biomedical Research Unit, University of Oxford, Oxford OX3 7FZ, UK;1. Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt;2. Department of Pharmacognosy, Faculty of Pharmacy, Damanhour University, Damanhour City, Egypt;1. Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina;2. Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Córdoba, Argentina;3. Departamento de Farmacología, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina;4. Instituto de Farmacología Experimental de Córdoba (IFEC-CONICET), Córdoba, Argentina;5. Unidad de Tecnología Farmacéutica (UNITEFA-CONICET), Córdoba, Argentina;1. Department of Pharmacology, Poona College of Pharmacy, Bharati Vidyapeeth Deemed University, Erandwane, Paud Road, Pune, 411 038, India;2. Indus Biotech Private Limited, 1, Rahul Residency, Off Salunke Vihar Road, Kondhwa, Pune, 411 048, India;1. Centre for Lipid Research, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India;2. Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India;3. Centre for NMR & Structural Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, India;4. Academy of Scientific and Innovative Research, New Delhi, India |
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| Abstract: | Five unprecedented furan-2-carbonyl C-glycosides, scleropentasides A–E, and two phenolic diglycosides, 4-hydroxy-3-methoxybenzyl 4-O-β-d-xylopyranosyl-(1 → 6)-β-d-glucopyranoside and 2,6-dimethoxy-p-hydroquinone 1-O-β-d-xylopyranosyl-(1 → 6)-β-d-glucopyranoside, were isolated from leaves and twigs of Scleropyrum pentandrum together with potalioside B, luteolin 6-C-β-d-glucopyranoside (isoorientin), apigenin 8-C-β-d-glucopyranoside (vitexin), apigenin 6,8-di-C-β-d-glucopyranoside (vicenin-2), apigenin 6-C-α-l-arabinopyranosyl-8-C-β-d-glucopyranoside (isoschaftoside), apigenin 6-C-β-d-glucopyranosyl-8-C-β-d-xylopyranoside, adenosine and l-tryptophan. Structure elucidations of these compounds were based on analyses of chemical and spectroscopic data, including 1D and 2D NMR. In addition, the isolated compounds were evaluated for their radical scavenging activities using both DPPH and ORAC assays. |
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