Results 151 to 160 of about 3,678 (193)

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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Limonoids from the stem bark of Khaya grandifoliola

Phytochemistry, 2008
Three limonoids, deacetylkhayanolide E (1), 6S-hydroxykhayalactone (2), and grandifolide A (3), along with three known ones, were isolated from stem bark of the Nigerian medicinal plant Khaya grandifoliola. Their structures were characterized on the basis of the application of spectroscopic methods.
Zhang, Hua, Odekub, Oluwatoyin A., Wanga, Xiao-Ning, Yue, Jian-Min   +3 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 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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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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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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Khaya

2021
R.M. Polhill, B. T. Styles, F. White
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Khaya Witbooi. Rabbit

Social Dynamics, 2019
ABSTRACTIn January 2014 a scandal broke out when a sculpted rabbit was discovered in the ear of a nine-metre-tall statue of Nelson Mandela which stands before the Union Buildings, South Africa’s go...
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Mechanische Eigenschaften von Khaya-Mahagoni

Holz als Roh- und Werkstoff, 1992
Bei Biege und Zugbelastung sowie bei Druck belastung parallel und quer zur Faserrichtung wurden die Elastizitatsmoduln und die Festigkeiten von Khaya sp. bestimmt. Der Druck- und der Zug-Elastizitatsmodul: dies gilt auch fur andere Holzarten, wie herangezogene Literaturwerte zeigen. Nach einem Vorschlag von Bechtel, Norris (1952) wird die Zugfestigkeit
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khaya, n.

2023
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