Results 161 to 170 of about 1,302 (207)

Machining characteristics of khaya senegalensis and anogeisus leiocarpus

Ghana Journal of Forestry, 2012
Khaya senegalensis (Kuntunkuri) and Anogeisus leiocarpus (Kane) have been found to be in abundance in the Savannah Zone of Ghana where other Ghanaian primary species are scarcely available. In contribution to the promotion of these species, the turning, shaping, boring and sanding properties were studied.
Owusu, Francis Wilson, Ayarkwa, Joshua
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limonoids from Khaya senegalensis

Phytochemistry, 1998
A new limonoid was isolated from the bark of Khaya senegalensis and identified as 2,6-dihydroxyfissinolide. The assignments of some signals in the (13)C NMR spectrum of fissinolide have been reversed and the signals of the (1)H NMR spectrum of methyl 3beta-acetoxy-6-hydroxy-1-oxomeliac-14-enoate have been assigned.
Khalid, Sami, Friedrichsen, Gerda, Kharazmi, Arsalan, Theander, Thor, Olsen, Carl, Brøgger Christensen, S   +5 more
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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
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Limonoids and Triterpenoids from Khaya senegalensis

Journal of Natural Products, 2010
Seven new limonoids (1-7), named khayalenoids C-I, three new triterpenoids (8-10), named senegalenes A-C, and eight known limonoids have been isolated from stems of Khaya senegalensis. The structures of these compounds were elucidated on the basis of spectroscopic analyses.
Tao, Yuan, Chuan-Rui, Zhang, Sheng-Ping, Yang, Jian-Min, Yue   +3 more
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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
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Limonoids from leaves of Khaya senegalensis

Phytochemistry, 1997
Abstract The leaves of Khaya senegalensis yielded two new limonoids. These compounds were identified on the basis of spectroscopic analysis as methyl 1α-acetoxy-3β,6,8α-trihydroxy-2α-methoxy-2β,14β-epoxy-[4.2.1 10,30 .1 1,4 ]-tricyclomeliac-7-oate and methyl 1α-acetoxy-6,8α,14β,30β-tetrahydroxy-3-oxo [3.3.1 10,2 .1 1,4 ]-tricyclomeliac-7-oate ...
Lis R.V. Olmo, M.Fátima das G.F. da Silva, Edson Rodrigues Fo., Paulo C. Vieira, João B. Fernandes, Antônio L. Pinheiro, Evaldo F. Vilela   +6 more
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Two new compounds fromKhaya senegalensis

Journal of Asian Natural Products Research, 2013
Two new compounds, khayseneganin I (1) and 2α,3α,16β-trihydroxy-20-acetoxy-20(R)-pregnane (2), along with six known compounds, 2α,3α,20-trihydroxy-16β-acetoxy-20(R)-pregnane (3), 2α,3β-dihydroxypregnan-16-one-2β,19-hemiketal (4), (+)-catechin (5), ivorenolide A (6), luteolin-7-O-α-l-rhamnoside (7), and ( - )-5'-methoxy-isolariciresinol-2a-O-β-d ...
Chun-Mao, Yuan, Gui-Hua, Tang, Xiao-Ying, Wang, Yu, Zhang, Feng, Guo, Jin-Hua, Liao, Tao, Zou, Guo-Ying, Zuo, Hui-Ming, Hua, Hong-Ping, He, Xiao-Jiang, Hao   +10 more
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LONG TERM STORAGE OFKHAYA SENEGALENSISSEEDS

International Tree Crops Journal, 1999
SUMMARY Khaya senegalensis (Desr.) A. Juss. is an African mahogany species from dry tropical zones. The present study aims at defining the optimum storage conditions in order to retain the viability of seeds of this species in the long term. Monitoring has been going on for four years.
Danthu, P., Gaye, A., Sarr, A.
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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
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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
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