Analysis of extracts obtained from shoots, roots and exudates of Brassica alba revealed the presence of 3,5,6,7,8-pentahydroxy-4'-methoxy flavone in shoots, as well as 2',3',4',5',6'-pentahydroxy chalcone and 3,5,6,7,8-pentahydroxy flavone in roots and exudates. Apigenin was also found in the shoots and roots, but not in the root exudates.

Following inoculation with the anthracnose pathogen Colletotrichum sublineolum, seedlings of the sorghum resistant cultivar SC748-5 showed more rapid and elevated accumulation of luteolin than the susceptible cultivar BTx623. On the other hand, apigenin was the major flavone detected in infected BTx623 seedlings. Luteolin was demonstrated to show stronger inhibition of spore germination of C. s...

The effects of eleven flavonoids on lipid peroxidation, protein degradation, deformability and osmotic fragility of human erythrocytes exposed in vitro to 10 mM H2O2 for 60 min at 37 ̊C have been studied. The following flavonoids; quercetin, rutin and morin significantly protected erythrocytes against lipid peroxidation caused by H2O2. This inhibition of lipid peroxidation could be explained by ...

A strategy for analyzing flavone C-glucosides in the leaves of different species of bamboo was developed. Firstly, the flavone C-glycosides were extracted from the bamboo leaves (51 species in 17 genera) with methanol and chromatographed on silica gel 60 plates in automatic developing chamber (ADC2), and a qualitative survey using simple derivatization steps with the NP reagent was carried out....

Flavones are a major class of flavonoids with a wide range of physiological functions in plants. They are constitutively accumulated as C-glycosides and O-linked conjugates in vegetative tissues of grasses. It has long been presumed that the two structural modifications of flavones occur through independent metabolic routes. Previously, we reported that cytochrome P450 93G2 (CYP93G2) functions ...

The known flavone, chrysin (1) and the known flavone glycoside, chrysin-7-O-(β-D-glucopyranoside) (2) together with vomifoliol, loliode and cinnamic acid have been isolated for the first time from the leaves and flowers of Calycotome spinosa (L.). Lamk, theirs structures were established on the basis of spectroscopic technical; H-, C-NMR, 2D NMR and MS (I.E).

Over the past decade, the chemical behavior of flavonoids as antioxidants has become the subject ofintense experimental research. In this paper, we use a quantum-chemical approach to shed light on thereactivity of four poly phenols, Benzoic acid, vanilic acid, gallic acid and flavone . In order to establishthe most efficient theoretical methodology, different methods, either Hartree—Fock-based ...

Flavone analogs are natural compounds of the flavonoid class that have a wide range biological activities. The present study aimed to predict, with aid in silico methodologies, oral bioavailability and pharmacokinetic toxicological analyzes for three flavone analogues (apigenin, chrysin luteonlin). revealed good availability, favorable parameters. Virtual Screening performed predict all did not...

Two flavonids: 5-hydroxy-6,7,4 ́-trimethoxy flavone (salvigenin), 5-hydroxy-7,4 ́-dimethoxy flavone(thitonine) and a labdane type diterpenoid: 8,13-epoxy-14 labdene (manoyl oxide) isolated from the solventextract of the aerial part of Salvia reuterana Boiss.The proposed structure were stablished by 1HNMR,13CNMR, 2DNMR( C-H-Cosy, HMQC),DEPT and Mass spectroscopy and confirmed in accordance withbib...