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Plant gums of the genus Khaya. Part V. Further studies on Khaya senegalensis gum
Journal of the Chemical Society C: Organic, 1970The fractionation of deacetylated Khaya senegalensis gum has been re-examined. The main component of the gum, polysaccharide A, has been converted into the carboxy-reduced derivative, and oligosaccharides formed on acetolysis of the modified polysaccharide have been shown to include 4-O-rhamnopyranosylgalactose (I), 4-O-galactopyranosylgalactose (II ...
G. O. Aspinall, A. K. Bhattacharjee
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Plant gums of the genus Khaya. Part IV. Major component of Khaya ivorensis gum
Journal of the Chemical Society C: Organic, 1970Fractionation of deacetylated Khaya ivorensis gum affords a major polysaccharide component in essentially homogeneous form. Partial acid hydrolysis of this gives a degraded galacturonan and the following oligosaccharides, 2-O-(α-D-galactopyranosyluronic acid)-L-rhamnose (I), 4-O-(4-O-methylglucopyranosyluronic acid)galactose (II), 4-O ...
G. O. Aspinall, A. K. Bhattacharjee
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Mechanische Eigenschaften von Khaya-Mahagoni
Holz als Roh- und Werkstoff, 1992Bei 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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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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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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Limonoids from Khaya anthotheca(Welw.) C.DC.
Journal of the Chemical Society C: Organic, 1970Khaya anthotheca occurs in two distinct chemical varieties. The timber of one, indigenous to East Africa, yields khivorin and a new compound identified as methyl 3β-isobutyryloxy-1-oxomeliacate, while the seeds yield khivorin, 3-deacetylkhivorin, and a new compound identified as 14β,15β-epoxy-16-oxo-1α,3α,7α-triacetoxy-meliacan.
E. K. Adesogan +2 more
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GRANDIFOLIN FROM KHAYA GRADIFOLIOLA STEM BARK
Nigerian Journal of Natural Products and Medicine, 1998The antimalarial n-hexane fraction of K. grandifoliola stem bark on fractionation gave methyl-6-acetoxy angolensate and novel grandifolin characterized by spectroscopic methods. Key Words: Khaya grandifoliola, Meliaceae, antimalarial activity, grandifolin Nig. J. Nat. Prod. And Med.
Agbedahunsi, JM, Elujoba, AA
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Limonoids from leaves of Khaya senegalensis
Phytochemistry, 1997Abstract 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 +6 more
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Three New Modified Limonoids from Khaya senegalensis
Journal of Natural Products, 2002Three 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 +6 more
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