Results 211 to 220 of about 7,068 (252)

A new cytotoxic salannin-class limonoid alkaloid from seeds of Azadirachta indica A. Juss

Chinese Chemical Letters, 2017
A new cytotoxic salannin-class limonoid alkaloid, azadiramide A (1), was isolated from seeds of Azadirachta indica A. Juss. Its structure was elucidated by extensive analysis of spectroscopic data and quantum chemical calculation.
Jianxun Zhu, Xiaofeng Lu, Xiaona Fan, Ruibo Wu, Hongjuan Diao, R. Yu, Hanhong Xu, Jiachen Zi   +7 more
semanticscholar   +1 more source

Degraded limonoids from Melia azedarach

Phytochemistry, 1998
Two new degraded limonoids, azedararide and 12alpha-acetoxy fraxinellone, were isolated together with two known degraded limonoids, fraxinellone and fraxinellonone, as ichthyotoxic substances from the root bark of Melia azedarach. Their structures were elucidated by spectroscopic and chemical means.
Munehiro, Nakatani, Ruo Chun, Huang, Hiroaki, Okamura, Tetsuo, Iwagawa, Kenjiro, Tadera   +4 more
openaire   +2 more sources

Limonoids from Ekebergia pterophylla

Phytochemistry, 1984
Abstract The seed of Ekebergia pterophylla contains limonoids closely related to methyl angolensate, and similar to those of other Ekebergia species. This serves as evidence to support the taxonomic position of the species which has been disputed.
Anne R.H. Taylor, David A.H. Taylor
openaire   +1 more source

Limonoids from Atalantia zeylanica

Phytochemistry, 1994
Abstract A limonoid glucoside and two aglycones, structurally related to the unusual propellane-type limonoid cycloepiatalantin, were isolated from Atalantia zeylanica seeds. The molecular conformation of cycloepiatalantin was determined by X-ray crystallographic analysis.
Raymond D. Bennett, Shin Hasegawa, Rosalind Y. Wong   +2 more
openaire   +1 more source

Limonoids from Astrotrichilia voamatata

Phytochemistry, 1999
The stem bark of Astrotrichilia voamatata (Meliaceae) yielded the novel limonoids voamatin A and voamatin B. The stem bark of Cipadessa boivinina (Meliaceae) yielded sitosterol and stigmast-4-en-3-one, but no limonoids.
Dulcie A. Mulholland, Sianne L. Schwikkard, Milijaona Randrianarivelojosia   +2 more
openaire   +1 more source

Limonoids from Clausena anisata

Journal of Natural Products, 1989
Five tetranortriterpenoids have been isolated from the stem bark and roots of Clausena anisata. The known compounds were identified spectroscopically as limonin, zapoterin and clausenolide. The novel compounds include clausenolide-1-ethyl ether and clausemarin. The isolation of these limonoids from C.
Bonaventure Tchaleu Ngadjui, Johnson Foyere Ayafor, Beibam Lucas Sondengam, Joseph Donald Connolly   +3 more
openaire   +1 more source

Synthesis of the seco-Limonoid BCD Ring System Identifies a Hsp90 Chaperon Machinery (p23) Inhibitor.

Chemistry, 2018
D-Ring-seco-limonoids (tetranortriterpenoids), such as gedunin and xylogranin B display anti-cancer activity, acting via inhibition of Hsp90 and/or associated chaperon machinery (e.g., p23).
David M. Pinkerton, S. Chow, Nada H. Eisa, Kashish Kainth, Timothy J Vanden Berg, Jed M. Burns, L. Guddat, G. Savage, A. Chadli, Craig M. Williams   +9 more
semanticscholar   +1 more source

Limonoids from Melia toosendan

Phytochemistry, 1999
Abstract Four limonoids were isolated from Melia toosendan together with two known limonoids, nimbolinin B and its 1-deacetyl derivative. Among the new limonoids included one skeletal spiro-, one ring- C-seco nimbolinin-type, and two trichilinin-type apo-euphol-triterpenoids derivatives.
Munehiro Nakatani, Motonari Shimokoro, Jian-Bo Zhou, Hiroaki Okamura, Tetsuo Iwagawa, Kenjiro Tadera, Noboru Nakayama, Hideo Naoki   +7 more
openaire   +1 more source

Limonoids from Nymania capensis

Phytochemistry, 1982
Abstract The bark and timber of Nymania capensis contain prieurianin and other complex limonoids, four of which have been identified. The chemical evidence serves to support the taxonomic position of Nymania in the family Meliaceae.
Lesley K. MacLachlan, David A.H. Taylor
openaire   +2 more sources

Limonoid glucosides in citrus

Phytochemistry, 1989
Abstract Citrus contained high concentrations of limonoid glucosides. Four new glucosides, isolated from grapefruit seeds, were identified as limonin 17- O -β- d -glucopyranoside, nomilin 17- O -β- d -glucopyranoside, deacetylnomilin 17- O -β- d -glucopyranoside and obacunone 17- O -β- d -glucopyranoside.
Shin Hasegawa, Raymond D. Bennett, Zareb Herman, Chi H. Fong, Peter Ou   +4 more
openaire   +1 more source