Results 121 to 130 of about 2,015 (176)

Limonoids of Teclea ouabanguiensis

Journal of Natural Products, 1986
The stem bark of Teclea ouabanguiensis has yielded six triterpenoids, two of which are new. The known compounds were identified spectroscopically as 7-deacetylazadirone (2), 7-deacetylproceranone (3), tecleanin, (4), and lupeol. The novel compounds include the tetranortriterpenoids, 7-deacetoxy-7-oxoazadirone (1), and ouabanginone (5).
J F, Ayafor, B L, Sondengam, A N, Bilon, J D, Connolly   +3 more
openaire   +2 more sources

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.
Sheng-Ping Yang, Sheng Yin, Chuan-Rui Zhang   +2 more
exaly   +3 more sources

Recent progress in the synthesis of limonoids and limonoid-like natural products

Organic Chemistry Frontiers, 2020
Recent progress in syntheses of limonoids and limonoid-like natural products is reviewed. The current “state-of-art” advance on novel synthetic strategy are summarized and future outlook will be presented.
Shaomin Fu, Bo Liu
openaire   +1 more source

Limonoids from Cedrela sinensis

Phytochemistry, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Kumiko, Mitsui, Masato, Maejima, Haruhiko, Fukaya, Yukio, Hitotsuyanagi, Koichi, Takeya   +4 more
openaire   +2 more sources

Bioavailability of Citrus Limonoids in Humans

Journal of Agricultural and Food Chemistry, 2003
This study utilizes liquid chromatography/mass spectrometry (LC-MS) to analyze the plasma of four groups of four healthy male and female subjects administered high doses of pure limonin glucoside (0.25-2.0 g in 200 mL of buffered water) for the presence of limonin to establish the absorption, metabolism, and bioavailability of citrus limonoids to ...
Gary D, Manners, Robert A, Jacob, Andrew P, Breksa, Thomas K, Schoch, Shin, Hasegawa   +4 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

Phragmalin limonoids from Chukrasia tabularis

Phytochemistry, 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, Matsumi Doe   +2 more
exaly   +3 more sources

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