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Debella, A., Haslinger, E., Schmid, M. G., Bucar, F., Michl, G., & Abebe, D., et al. (2000). Triterpenoid saponins and sapogenin lactones from albizia gummifera. Phytochemistry, 53(8), 885–892. |
| Resource type: Journal Article DOI: 10.1016/S0031-9422(99)00464-1 ID no. (ISBN etc.): 319422 BibTeX citation key: Debella2000 View all bibliographic details  |
Categories: General Keywords: A-homo-3a-oxa-olean-12-en-28-oic acid, Albizia gummifera (C.A. Smith), Machaerinic acid lactone glycosides, Mimosaceae, Oleanolic acid glycosides, Stem bark, Stigmasterol glycoside Creators: Abebe, Bucar, Debella, Haslinger, Kunert, Michl, Schmid Collection: Phytochemistry |
| Abstract |
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The structures of two new monodesmosidic and bisdesmosidic triterpenoid saponins (1 and 2) and the known compound $Δ$5-stigmasterol-3-O-$β$-D- glucopyranoside (3) as well as two new oleanane type triterpene lactone glycosides 4, 5 and a new sapogenin lactone 6 isolated from the stem bark of Albizia gummifera C.A. Smith (Mimosaceae) have been elucidated as 3-O-{$β$D- glucopyranosyl(1 → 2)-[$α$-L-arabinopyranosyl(1 → 6)]-$β$-D-glucopyranosyl}- oleanolic acid (1), $β$-D-glucopyranosyl(1 → 2)-$β$-D-glucopyranosyl 3-O-{$β$- D-glucopyranosyl(1 → 2)-[$α$-L-arabinopyranosyl(1 → 6)]-$β$-D- glucopyranosyl}-oleanolate (2), 3$β$-{O-D-glucopyranosyl-(1 → 2)-[0-$α$-L- arabinopyranosyl(1 → 6)]$β$-D-glucopyranosyloxy}-machaerinic acid $γ$-lactone (4), 3$β$-O-$β$-D-glucopyranosiduronic acid (1 → 2)-$β$-D-glucopyranosyloxy]- machaerinic acid $γ$-lactone (5), and A-homo-3a-oxa-5$β$-olean-12-en-3-one-28- oic acid (6), respectively. The complete assignment of the 1H and 13C resonances of 1, 2, 4 and 6 and of the peracetate of 5 were achieved by means of 2D-NMR studies. (C) 2000 Elsevier Science Ltd.
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