A new oleanane glycoside from the roots of Astragalus caprinus |
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| Authors: | Mitaine-Offer Anne-Claire Miyamoto Tomofumi Semmar Nabil Jay Maurice Lacaille-Dubois Marie-Aleth |
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| Institution: | Laboratoire de Pharmacognosie, Unité UMIB, EA 3660, Faculté de Pharmacie, Université de Bourgogne, 7 Bd. Jeanne D'Arc, BP 87900, 21079 Dijon Cedex, France. |
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| Abstract: | A novel oleanane-type triterpene saponin (1) together with two known molecules, soyasapogenol B and astragaloside VIII were isolated from the roots of Astragalus caprinus. Their structural elucidation was performed mainly by 2D NMR techniques (COSY, TOCSY, NOESY, HSQC, HMBC) and mass spectrometry. Compound 1 was determined as 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-beta-D-glucuronopyranosyl]-22-O-beta-D-apiofuranosyl-soyasapogenol B. |
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| Keywords: | NMR 2D‐NMR Astragalus caprinus Fabaceae oleanane‐type triterpene saponin |
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