Biang A. E. M., Messi L. M., Kamto E. L., Simo L. M., Lavedan P., Vedrenne M., Mbing J. N., Pegnyemb D. E., Haddad Mohamed, Note O. P. (2021). Triterpenoid saponins and others glycosides from the stem barks of Pancovia turbinata Radlk. Carbohydrate Research, 508, 108393 [8 p.]. ISSN 0008-6215.
Titre du document
Triterpenoid saponins and others glycosides from the stem barks of Pancovia turbinata Radlk
Année de publication
2021
Auteurs
Biang A. E. M., Messi L. M., Kamto E. L., Simo L. M., Lavedan P., Vedrenne M., Mbing J. N., Pegnyemb D. E., Haddad Mohamed, Note O. P.
Source
Carbohydrate Research, 2021,
508, 108393 [8 p.] ISSN 0008-6215
In our continuing search of saponins from the plant of Sapindaceae family, phytochemical investigation of the stem barks of Pancovia turbinata Radlk., led to the isolation and structural characterization of two new triterpenoid saponins, named turbinatosides A-B (1-2), one new farnesyl glycoside, named turbinoside A (3), one new coumarin glucoside, named panturboside A (4), together with a known saponin (5). The structures of the new compounds were established, using extensive analysis of NMR techniques, mainly 1D NMR (H-1, C-13, and DEPT) and 2D NMR (COSY, NOESY, HSQC, HSQC-TOCSY and HMBC) experiments, HRESIMS and by comparison with the literature data, as 3-O-beta-D-xylopyranosyl-(1 -> 3)-alpha-L-arabinopyranosyl-(1 -> 4)-beta-D-glucopyranosyl-(1 -> 3)-alpha-L-rhamnopyranosyl-(1 -> 2)-alpha-L-arabinopyranosylhederagenin 28-O-beta-D-glucopyranosyl ester (1), 3-O-alpha-L- arabinopyranosyl-(1 -> 4)-beta-D-glucopyranosyl-(1 -> 3)-alpha-L-rhamnopyranosyl-(1 -> 2)-alpha-L-arabinopyr-anosylhederagenin 28-O-beta-D-xylopyranosyl-(1 -> 4)-beta-D-glucopyranosyl ester (2), 1-O-{beta-D-glucopyranosyl-(1 -> 3)-alpha-L-rhamnopyranosyl-(1 -> 2)-[alpha-L-rhamnopyranosyl-(1 -> 6)]-beta-D-glucopyranosyl}-(2E,6E)-farnes-1,12-diol (3), and 5-O-beta-D-glucopyranosyl-5,6,7-trihydroxy-8-methoxycoumarin (4), respectively. Our findings highlight the presence of -(3)Rha-(2)Ara-(3)hederagenin oligosaccharidic sequence usually described in saponins from Sapindoideae subfamily of Sapindaceae family, as well as farnesol glycosides, and represent therefore a valuable contribution to the chemotaxonomy of the Sapindoideae subfamily.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Sciences du monde végétal [076]
Localisation
Fonds IRD [F B010082768]
Identifiant IRD
fdi:010082768
