Results 151 to 160 of about 4,751 (200)

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
openaire   +2 more sources

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
openaire   +2 more sources

Phragmalin Limonoids from Chukrasia tabularis

ChemInform, 2004
Six phragmalin limonoids, named tabulalin and tabulalides A-E, were isolated from the root bark of Chukrasia tabularis (Meliaceae). Their structures were determined by spectroscopic methods, and their antifeedant properties evaluated.
Munehiro, Nakatani, Samir A M, Abdelgaleil, Mona M G, Saad, Ruo C, Huang, Matsumi, Doe, Tetsuo, Iwagawa   +5 more
openaire   +2 more sources

Limonoid biosynthesis 3: Functional characterization of crucial genes involved in neem limonoid biosynthesis

Phytochemistry, 2021
Neem (Azadirachta indica L.) is well known for its medicinal, agricultural, and pesticidal applications since ages. The secondary metabolites, limonoids, confer these biological properties, wherein over 150 different limonoids have been reported from neem.
Avinash, Pandreka, Patil S, Chaya, Ashish, Kumar, Thiagarayaselvam, Aarthy, Fayaj A, Mulani, Date D, Bhagyashree, Shilpashree H, B, Cheruvathur, Jennifer, Sudha, Ponnusamy, Dinesh, Nagegowda, Hirekodathakallu V, Thulasiram   +10 more
openaire   +2 more sources

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
openaire   +2 more sources

New limonoids and quinolone alkaloids with cytotoxic and anti-platelet aggregation activities from Evodia rutaecarpa (Juss.) Benth.

Fitoterapia, 2021
One new limonoid, named 19-hydroxy methyl isoobacunoate diosphenol (1); one new degraded limonoid, named 9α-methoxyl dictamdiol (9); two new quinolone alkaloids, 1-methyl-3-[(7E,9E,12Z)-7,9,12-pentadecadienyl]-4(1H)-quinolone (11) and 1-methyl-3-[(7E,9E ...
Jing Qin, Chao-Nan Liao, Wei-Wei Chen, Hong-You Li, J. Su, Xing-de Wu, Jiang-bo He, Gao-hong Zhang   +7 more
semanticscholar   +1 more source

A limonoid from Trichilia estipulata

Phytochemistry, 2000
The limonoid 21,24,25,26,27-pentanor-15,22-oxo-7alpha,23-dihydroxy-apotirucalla(eupha)-1-en-3-one was isolated from the dichloromethane extract of the stem bark of Trichilia estipulata. Its structure was established by spectroscopic methods (UV, EIMS, 1H and 13C NMR, HMQC and HMBC).
D A, Cortez, J B, Fernandes, P C, Vieira, M F, da Silva, A G, Ferreira   +4 more
openaire   +2 more sources

Limonoids from Turraea floribunda (Meliaceae)

Phytochemistry, 2004
Six novel limonoids and limonoid derivatives, turraflorins D-I along with the known turraflorins A and B have been isolated from seed of the South African Turraea floribunda (Meliaceae).
Kathryn, McFarland, Dulcie A, Mulholland, Leigh-Anne, Fraser   +2 more
openaire   +2 more sources

Development of Sclareol- and Sclareolide-Based Chemoenzymatic Approaches to Ring Intact and Seco Limonoids.

Journal of the American Chemical Society
The limonoids are a family of tetranortriterpenoids that share a steroid-like ring system with a conserved 3'-substituted furan moiety. The family exhibits a high degree of structural diversity arising from extensive oxidations and skeletal ...
Fang Chen, Jian Li, Hans Renata
semanticscholar   +1 more source

Limonoid derivatives from Astrotrichilia voamatata

Phytochemistry, 2000
The stem bark of Astrotrichilia voamatata (Meliaceae) has yielded the novel limonoids voamatins C and D. These compounds represent a new type of pentanortriterpenoid and are unique in containing a ring A cyclic ether.
D A, Mulholland, M, Randrianarivelojosia, C, Lavaud, J M, Nuzillard, S L, Schwikkard   +4 more
openaire   +2 more sources