Results 171 to 180 of about 1,932 (191)

Structural studies on plant gums with special reference to khaya ivorensis gum

, 1967
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An insect antifeedant limonoid from seed of khaya ivorensis [PDF]

Phytochemistry, 1992
Abstract A novel limonoid which is an insect antifeedant has been isolated from a methanolic extract of seeds of Khaya ivorensis . Its structure was determined on the basis of one and two-dimensional NMR. spectroscopy and chemical evidence.
Vanucci, C., Lange, G., Lhommet, G., Dupont, B., Davoust, D., Vauchot, B., Clément, Jean-Luc, Brunck, F.   +7 more
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Mexicanolide limonoids from the seeds of Khaya ivorensis with antimicrobial activity

Journal of Asian Natural Products Research, 2022
The methanol extract of the seeds of Khaya ivorensis afforded two new mexicanolide limonoids, ivorensines A and B (1 and 2), together with one known compound, ruageanin D (3). The structures of the isolated compounds were established based on 1 D and 2 D (1H-1H COSY, HMQC, and HMBC) NMR spectroscopy, in addition to high resolution mass spectrometry ...
Tie, Xu, Zhi-Hai, Wang, Ying, Zhao, De-Rong, Sun   +3 more
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Limonoids from Khaya ivorensis

Phytochemistry, 2009
Four limonoids, 1-O-deacetyl-6-deoxykhayanolide E (1), 1-O-deacetyl-2 alpha-hydroxykhayanolide E (2), 3-acetyl-khayalactone (3), 11 alpha-acetoxy-2 alpha-hydroxy-6-deoxy-destigloylswietenine acetate (4), along with 12 known limonoids, were isolated from the stems of Khaya ivorensis.
Bo, Zhang, Sheng-Ping, Yang, Sheng, Yin, Chuan-Rui, Zhang, Yan, Wu, Jian-Min, Yue   +5 more
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Limonoid Extractives from Khaya ivorensis

Journal of the Chemical Society C: Organic, 1970
The timber of Khaya ivorensis contains khivorin, small amounts of swietenolide esters and other limonoids; the seed contains mainly methyl angolensate, and the root bark contains a complex mixture of limonoids. One of the new compounds from the timber, methyl ivorensate, has been found to contain a ring A lactone system, similar to that in nomilin, and
E. K. Adesogan, D. A. H. Taylor
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Antifungal activity of limonoids from Khaya ivorensis

Pest Management Science, 2004
AbstractChemical investigation of the diethyl ether extract of the stem bark of Khaya ivorensis A Chev (Meliaceae) afforded ten limonoids of angolensates, ring D‐opened limonoids and mexicanolides. The structures of the limonoids isolated were determined by comparison of their 1H and 13C NMR data with those reported in the literature.
Samir A M, Abdelgaleil, Fumio, Hashinaga, Munehiro, Nakatani   +2 more
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Methyl angolensate changes in Khaya ivorensis after fungal infection

Phytochemistry, 2009
Khaya ivorensis with and without symptoms of stem and branch cankers, caused by Botryosphaeria rhodina were examined in order to determine whether the secondary metabolites in this plant were associated with a chemical defense response. This study provides evidence that the limonoid methyl angolensate (MA) is present at higher concentrations in K ...
Reche, K., de Souza, G., Trapp, M., Rodrigues-Filho, E., Silva, S., Fernandes, J., Vieira, P., Muller, M., da Silva, M.   +8 more
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Ivorenoids A–F: limonoids from Khaya ivorensis

Tetrahedron, 2014
Abstract Six new limonoids, ivorenoids A–F ( 1 – 6 ), along with ten known analogues, were isolated from an ethanolic extract of the stems of Khaya ivorensis . Their structures were elucidated on the basis of spectroscopic analyses. Compounds 1 and 2 possessed a rare rearranged skeleton of khayanolides and a unique γ-lactone (C-16/C-8) replacing
Wen-Bin Wu, Hua Zhang, Hong-Chun Liu, Shi-Hui Dong, Yan Wu, Jian Ding, Jian-Min Yue   +6 more
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ChemInform Abstract: LIMONOID‐AUSZUEGE AUS KHAYA IVORENSIS

Chemischer Informationsdienst. Organische Chemie, 1970
AbstractNeben Khivorin, 3‐Desacetyl‐ und 7‐Desacetylkhivorin, 6‐Hydroxy‐ und Angolensinsäuremethylester, Sitosterol und Fissinolid wird Ivorensinsäuremethylester (I) und das Steroid (II) aus dem Holz isoliert und identifiziert.
E. K. ADESOGAN, D. A. H. TAYLOR
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Phytoremediation potential of Khaya ivorensis and Cedrela fissilis in copper contaminated soil

Journal of Environmental Management, 2020
Mineral exploration of copper (Cu) in the Amazon has significantly impacted the environment, leading to contamination of large areas that require remediation. Tropical tree species that can immobilize metals and restore plant cover should be selected for phytoremediation programs.
Watilla Pereira, Covre, Wendel Valter da Silveira, Pereira, Deyvison Andrey Medrado, Gonçalves, Orivan Maria Marques, Teixeira, Cristine Bastos do, Amarante, Antonio Rodrigues, Fernandes   +5 more
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