Results 81 to 90 of about 159 (121)
Some of the next articles are maybe not open access.
Phragmalin Limonoids fromChukrasia tabularisvar.velutina
Planta Medica, 2011Two new C-15-acyl phragmalin limonoids, velutinalides A and B, featuring a C-16/C-30 δ-lactone ring, and a new structurally related natural product, R310B8, were isolated from the leaves of Chukrasia tabularis var. velutina. Their structures were elucidated on the basis of extensive spectroscopic data analyses and by comparison of their NMR data with ...
Xue-Lian Chen, Hai-Li Liu, Yue-Wei Guo
openaire +2 more sources
Nortriterpenoids from Chukrasia tabularis var. velutina
Journal of Natural Products, 2007Five new limonoids, tabularisins E-I ( 1- 5), and a new dinorcycloartane, (24 R)-28,29-dinor-cycloartane-3beta,24,25-triol ( 6), together with three known compounds, were isolated from the twigs and leaves of Chukrasia tabularis var. velutina. Their structures were elucidated primarily on the basis of spectroscopic methods.
Chuan-Rui, Zhang +5 more
openaire +2 more sources
Antimutagenic and Antioxidant Characteristics of Chukrasia tabularis A Juss Extracts
International Journal of Toxicology, 2010The current study aims to evaluate the antioxidative and antimutagenic activities of methanol extract and different fractions of Chukrasia tabularis leaves. The antioxidative potential was evaluated using 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) cation and superoxide anion radical-scavenging assay.
Rajbir, Kaur +3 more
openaire +2 more sources
Limonoids and triterpenoids from the stems of Chukrasia tabularis A. Juss.
Phytochemistry Letters, 2019Abstract Three new limonoids named chuktabrin L (1), meliasenin Y (2), 11α-acetoxy-20,21,22,23-tetrahydro-23-oxoazadirone (3) and one new triterpenoid, named hispidol C (4), together with one known compound hispidol B (5) were isolated from the stems of Chukrasia tabularis A. Juss.
Yancui Wang +6 more
openaire +1 more source
Naturwissenschaften, 2008
Polyphenols and polyphenol-rich fractions of plants have been reported to have protective effects against lipid peroxidation, most probably by serving as scavengers of free radicals and/or by chelating metal ions. In the present study, the effect of different extracts/subfractions of Chickrassy (Chukrasia tabularis) on peroxyl radical mediated damage ...
Rajbir, Kaur +3 more
openaire +2 more sources
Polyphenols and polyphenol-rich fractions of plants have been reported to have protective effects against lipid peroxidation, most probably by serving as scavengers of free radicals and/or by chelating metal ions. In the present study, the effect of different extracts/subfractions of Chickrassy (Chukrasia tabularis) on peroxyl radical mediated damage ...
Rajbir, Kaur +3 more
openaire +2 more sources
Phytochemistry, 2021
Six undescribed 1,8,9-phragmalin limonoid orthoesters (chukorthoesters A-F, 1-6) and two undescribed mexicanolide-type limonoids (ivorenoids H and I, 7 and 8), together with ten known limonoids, were isolated from the seeds of common wood-source and greening plants Chukrasia tabularis A. Juss.
Heng, Li +8 more
openaire +2 more sources
Six undescribed 1,8,9-phragmalin limonoid orthoesters (chukorthoesters A-F, 1-6) and two undescribed mexicanolide-type limonoids (ivorenoids H and I, 7 and 8), together with ten known limonoids, were isolated from the seeds of common wood-source and greening plants Chukrasia tabularis A. Juss.
Heng, Li +8 more
openaire +2 more sources
Phytochemistry Letters, 2021
Abstract Three new triterpenoids (1–3), including two new 19 (10 → 9β) abeo-tirucallane derivatives (1–2) and a new tirucallane-type triterpenoid (3), together with two known tirucallane-type triterpenoids (4–5) were isolated from the ethanol extract of the fruits of Chukrasia tabularis.
Jia-Meng Hu +10 more
openaire +1 more source
Abstract Three new triterpenoids (1–3), including two new 19 (10 → 9β) abeo-tirucallane derivatives (1–2) and a new tirucallane-type triterpenoid (3), together with two known tirucallane-type triterpenoids (4–5) were isolated from the ethanol extract of the fruits of Chukrasia tabularis.
Jia-Meng Hu +10 more
openaire +1 more source
Australasian Plant Pathology, 2020
Chukrasia tabularis is a rare and valuable tree in the mahogany family (Meliaceae) which has been planted with fruit trees in home gardens in Vietnam more than 60 years. Recently, households have become concerned with sporadic trees wilting and dying. In this study we explore this new tree decline.
N. M. Chi +10 more
openaire +1 more source
Chukrasia tabularis is a rare and valuable tree in the mahogany family (Meliaceae) which has been planted with fruit trees in home gardens in Vietnam more than 60 years. Recently, households have become concerned with sporadic trees wilting and dying. In this study we explore this new tree decline.
N. M. Chi +10 more
openaire +1 more source
Management of Hypsipyla robusta Moore (Pyralidae) damage in Chukrasia tabularis A. Juss (Meliaceae)
International Journal of Tropical Insect Science, 2021Chukrasia tabularis is a high-value tree in the mahogany family and in Vietnam is grown in home gardens and small plantations. One to 3-year old trees are susceptible to shoot tip damage from larvae of Hypsipyla robusta which feed inside the stem. With the recent expansion of C.
N. M. Chi +8 more
openaire +1 more source
Four new limonoids from the seeds of Chukrasia tabularis A. Juss.
Phytochemistry Letters, 2017Abstract Two new C-15 enolic acyl phragmalin-type limonoid orthoesters ( 1 - 2 ) which possessed a C-15-propionyl phragmalin skeleton and two new mexicanolide-type limonoids ( 3 - 4 ) were isolated from the ethanol extract of seeds of Chukrasia tabularis A. Juss.
Li Yi +5 more
openaire +1 more source