Results 171 to 180 of about 2,725 (219)

Limonoids from Azadirachta excelsa

Phytochemistry, 1998
Activity-directed fractionation of a stem extract of Azadirachta excelsa using KB (human oral epidermoid carcinoma) cells led to the isolation of four meliacin-type limonoids. Two of these constituents were novel, namely, 2,3-dihydronimbolide and 3-deoxymethylnimbidate, and these were purified along with the known compounds, nimbolide and 28 ...
B, Cui, H, Chai, H L, Constant, T, Santisuk, V, Reutrakul, C W, Beecher, N R, Farnsworth, G A, Cordell, J M, Pezzuto, A D, Kinghorn   +9 more
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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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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
openaire   +2 more sources

The trivial names of citrus limonoids

Food Chemistry, 2017
abstract
LENTINI, Giovanni, Habtemariam, Solomon
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Melanogenesis‐Inhibitory Activities of Isomeric C‐seco Limonoids and Deesterified Limonoids

Chemistry & Biodiversity, 2016
Treatment of eight C‐seco limonoids including six of salannin‐type, 1 – 6, and two of nimbin‐type, 7 and 8, with a combination of BF3 · Et2O and iodide ion yielded the isomeric C‐seco derivatives, i.e., six isosalannins, 1a – 6a, and two isonimbins, 7a and 8a, respectively.
Toshihiro, Akihisa, Maiko, Horiuchi, Masahiro, Matsumoto, Eri, Ogihara, Kenta, Ishii, Jie, Zhang   +5 more
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Limonoids with anti-inflammatory activity: A review

Phytochemistry, 2022
The natural limonoids distributed mainly in the Meliaceae and Rutaceae plants are known for their unique and complex structure with high degree oxidation and cyclic rearrangement. However, these compounds exhibit a broad range of biological activities such as insecticidal, antibacterial, antifungal, antimalarial, antioxidant, anticancer, antiviral, and
Erina, Hilmayanti, , Nurlelasari, Unang, Supratman, Kazuya, Kabayama, Atsushi, Shimoyama, Koichi, Fukase   +5 more
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Biosynthesis of limonoids in Citrus

Phytochemistry, 1977
Limonoids represent a group of chemically related triterpenes found in the Rutaceae and Meliaceae. Bitterness due to limonoids in a variety of citrus juices is a major problem in the citrus industry. Among 38 limonoids isolated from Citrus and its hybrids, limonin, a bitter member of the group, occurs widely in citrus juices and is the major cause of ...
Shin Hasegawa, John E. Hoagland
openaire   +1 more source

Limonoids from Cipadessa baccifera

Journal of Natural Products, 2020
Eighteen new limonoids, including eight methyl angolensates (1-8) and 10 cipadesins (9-18), were isolated from the leaves of Cipadessa baccifera. Their structures were characterized by means of spectroscopic data analyses, single-crystal X-ray diffraction, and quantum chemistry computational methods. The C-6 configurations in those compounds possessing
Jin-Hai Yu, Hua Zhang, Bin Zhou, Flavia M. Zimbres, Seema Dalal, Qun-Fang Liu, Maria B. Cassera, Jian-Min Yue   +7 more
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Evolution of limonoids in the Meliaceae

Biochemical Systematics and Ecology, 1984
Abstract The structural types of limonoids or meliacins can be characterized in terms of complexity by their position along biosynthetic routes on a biogenetic map, as well as by their basic skeletal specialization and state of oxidation. Genera of the Melioidease, one major subfamily of the Meliaceae, contain meliacins formed along several ...
M.Fatima Das G.F. Da Silva, Otto R. Gottlieb, David L. Dreyer   +2 more
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Distribution of limonoids in the rutaceae

Phytochemistry, 1972
Abstract Chemical studies on Choisya arizonica, C. mollis, C. ternata, Esenbeckia hartmanii, Hesperethusa crenulata, Eremocitrus glauca, Triphasia trifolia, Coleonema album and Pamburus missionis are described with special reference to the limonoid bitter principles.
David L. Dreyer, Michael V. Pickering, P. Cohan   +2 more
openaire   +1 more source