New oleanane-type saponins: Leptocarposide B-D,from Ludwigia leptocarpa (Onagraceae) |
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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. The Key Laboratory of Biomedical Engineering, Ministry of Education, Zhejiang University, Hangzhou 310027, PR China;2. Shandong University of Traditional Chinese Medicine, Jinan 250355, PR China;1. Gansu Provincial Key Laboratory of Aridland Crop Science, College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;2. Institute of Crop, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China;1. Department of Physics, Myongji University, Yongin, Gyeonggi-do 449-728, Republic of Korea;2. Department of Chemical Engineering, Myongji University, Yongin, Gyeonggi-do 449-728, Republic of Korea;3. Department of Materials Science and Engineering, Myongji University, Yongin, Gyeonggi-do 449-728, Republic of Korea;1. School of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China;2. Department of Chemistry and Biochemistry, The Ohio State University-Columbus, Columbus, OH 43210, United States;3. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China;1. Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy;2. Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI MAM, Italy |
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| Abstract: | Three new oleanane-type saponins, leptocarposide B-D (1–3), were isolated from the whole plant of Ludwigia leptocarpa (Nutt.) Hara, together with ten known compounds 4–13.The structures of these compounds were determined by interpretation of their spectral data, mainly HR-TOFESIMS, 1D-NMR (1H, 13C) and 2D-NMR (1H–1H COSY, HSQC, HMBC, and NOESY), and by comparison with the literature data. The structures of the new compounds were established as 28-O-β-d-xylopyranosyl-(1 → 4)-α-l-rhamnopyranosyl-(1 → 2)-α-l-arabinopyranosyl-(1 → 3)]-4-O-(3′-hydroxybutanoyloxy-3-hydroxybutanoyloxy)-β-d-fucopyranosyl zanhic acid (1); 3-O-β-d-glucopyranosyl-28-O-β-d-xylopyranosyl-(1 → 4)-α-l-rhamnopyranosyl-(1 → 2)-4-O-(3′-hydroxybutanoyloxy-3-hydroxybutanoyloxy)-β-d-fucopyranosyl medicagenic acid (2); 3-O-β-d-glucopyranosyl-(1 → 4)-β-d-glucopyranosyl-28-O-β-d-xylopyranosyl-(1 → 4)-α-l-rhamnopyranosyl-(1 → 2)-α-l- arabinopyranosyl-(1 → 3)]-4-O-(3′-hydroxybutanoyloxy-3-hydroxybutanoyloxy)-β-d-fucopyranosyl zanhic acid (3). |
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| Keywords: | Onagraceae Triterpenoid glycoside Bidesmoside Leptocarposide Structure elucidation |
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