Results 171 to 180 of about 3,827 (196)

Antifungal limonoids from the fruits of Khaya senegalensis

Fitoterapia, 2004
Investigation of the fruits of Khaya senegalensis resulted in the isolation of three new mexicanolide limonoids containing a rare conjugated diene lactone system named seneganolide A (1), 2-hydroxyseneganolide A (2) and 2-acetoxyseneganolide A (3). Two known limonoids, 3-deacetyl-7-deacetoxy-7-oxokhivorin (4) and methyl 6-hydroxyangolensate (5), were ...
Samir A M, Abdelgaleil, Tetsuo, Iwagawa, Matsumi, Doe, Munehiro, Nakatani   +3 more
openaire   +2 more sources

Three New Modified Limonoids from Khaya senegalensis

Journal of Natural Products, 2002
Three new rings B/D opened limonoids, two rearranged phragmalin limonoids named khayanolides D and E (1 and 2), and one limonoid glucoside named khayanoside (3) were isolated as insect antifeedants from the stem bark of Egyptian Khaya senegalensis. The structures of these compounds were established by spectroscopic methods, including 2D NMR and CD.
Munehiro, Nakatani, Samir A M, Abdelgaleil, Shihata M I, Kassem, Ken, Takezaki, Hiroaki, Okamura, Tetsuo, Iwagawa, Matsumi, Doe   +6 more
openaire   +2 more sources

Antimicrobial mexicanolide limonoids from the seeds of Khaya senegalensis

Journal of Asian Natural Products Research, 2021
Three new mexicanolide limonoids were obtained from the 90% ethanol extract of the seeds of Khaya senegalensis. Their structures were elucidated as senegalenines A-C (1-3) by analysing their 1D/2D NMR and MS spectroscopic analysis. In addition, the isolated limonoids were tested in vitro for antimicrobial potentials against 5 pathogenic microorganisms.
Yue-Hong, Jiang, Ting-Jun, Jiang, Xiao-Feng, Lv, Xiao-Fei, Yu, Wei-Qun, Chi   +4 more
openaire   +2 more sources

ChemInform Abstract: Tetranortriterpenoids from Khaya senegalensis.

ChemInform, 1998
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
T. R. GOVINDACHARI, G. N. K. KUMARI
openaire   +1 more source

Khayseneganins A–H, Limonoids from Khaya senegalensis

Journal of Natural Products, 2012
Eight new limonoids, khayseneganins A-H (1-8), and 31 known limonoids were isolated from the leaves and twigs of Khaya senegalensis. The structures of the new compounds were elucidated by 2D-NMR spectroscopy and mass spectrometry, and the absolute configuration of 1 was determined by the CD exciton chirality method.
Chun-Mao, Yuan, Yu, Zhang, Gui-Hua, Tang, Ying-Tong, Di, Ming-Ming, Cao, Xiao-Ying, Wang, Guo-Ying, Zuo, Shun-Lin, Li, Hui-Ming, Hua, Hong-Ping, He, Xiao-Jiang, Hao   +10 more
openaire   +2 more sources

Anticancer activity of limonoid from Khaya senegalensis

Phytotherapy Research, 2007
AbstractTwo limonoids were isolated from the methanol extract of Khaya senegalensis (Meliaceae), and their structures were identified as 3α,7α‐dideacetylkhivorin (1) and 1‐O‐acetylkhayanolide B (2) on the basis of MS and NMR spectral data. Complete assignments of 1H and 13C chemical shifts for compounds 1 and 2 were achieved by means of 1D and 2D NMR ...
Huaping, Zhang, Xi, Wang, Feng, Chen, Xiao M, Androulakis, Michael J, Wargovich   +4 more
openaire   +2 more sources

Khayanolides from African mahogany Khaya senegalensis (Meliaceae): A revision

Phytochemistry, 2009
Five khayanolides (1-O-acetylkhayanolide B 1, khayanolide B 2, khayanolide E 3, 1-O-deacetylkhayanolide E 4, 6-dehydroxylkhayanolide E 5) were isolated from the stem bark of African mahogany Khaya senegalensis (Meliaceae). Their structures and absolute configurations were determined through extensive spectroscopic analyses including MS, NMR, and single-
Huaping, Zhang, Junjie, Tan, Don, Vanderveer, Xi, Wang, Michael J, Wargovich, Feng, Chen   +5 more
openaire   +2 more sources

Senegalensions A–C, Three Limonoids from Khaya senegalensis

Chemistry – An Asian Journal, 2012
NSFC [30830114]; Ministry of Science and Technology [2009CB522300, 2009CB940900]; Young Academic and Technical Leader Raising Foundation of Yunnan Province [2010CI047]
Chun-Mao, Yuan, Yu, Zhang, Gui-Hua, Tang, Shun-Lin, Li, Ying-Tong, Di, Li, Hou, Jie-Yun, Cai, Hui-Ming, Hua, Hong-Ping, He, Xiao-Jiang, Hao   +9 more
openaire   +2 more sources

Neomassaria khayae sp. nov., a novel pleosporalean species on Khaya senegalensis from Guangdong Province, China

Phytotaxa, 2023
Khaya senegalensis is a tropical plant native to Africa and grown as an ornamental plant in Southern China. During our sample collection in Guangdong Province, China, a saprobic Dothideomycetes was collected from a dead stem of K. senegalensis. The collection was identified as a neomassaria-like species based on the morphology.
YUNHUI YANG, CHUNFANG LIAO, ISHARA S. MANAWASINGHE, ANTONIO ROBERTO GOMES DE FARIAS, ZHANGYONG DONG   +4 more
openaire   +1 more source

Extractives from the seed of Khaya senegalensis

Journal of the Chemical Society C: Organic, 1967
An examination of the seed of Khaya senegalensis A. Juss has given the known compounds khivorin and 7-deacetoxy-7-oxokhivorin, together with 3-deacetylkhivorin and a compound which is probably 7-deacetoxy-3-deacetyl-7-oxokhivorin. Examination of the nuclear magnetic resonance spectrum of 3-deacetylkhivorin shows that it is a 1α-7α-diacetoxy-3α-hydroxy ...
E. K. Adesogan, J. W. Powell, D. A. H. Taylor   +2 more
openaire   +1 more source