We report two antioxidant dendrimers with a surface rich in multiple phenolic hydroxyl groups, benzylic hydrogens, and electron-donating ring substituents that contribute to their potent free radical-quenching properties.
The relative rates of formation of the benzoxazine derivatives are dependent on the substitution pattern of the phenolic rings.
Higher molecular weight compounds were formed by joining phenolic rings by methylene bridges at para,para and ortho,para positions.
Bisphenol A (BPA) which has the chemical name 2,2- 4,4-dihydroxy 2,2- 4,4-dihydroxy 2,2- 4,4-dihydroxyndocrine disruphenylchemical (EEDC) with two unsaturated propanec risgs (Janari et al. 2009).
Following the C-ring fission, dehydroxylation occurs at the two remaining free phenolic rings.
Most of these genes are often induced by the chemicals with phenolic rings or quinone-mediated bactericidal activity.
The chemical structure of hydroxylated diphenylalkanes or bisphenols consists of two phenolic rings joined together through a bridging carbon.
Polyphenols, characterised by one or more phenolic rings, are divided into flavonoids, hydroxycinnamates, hydroxy-benzoates, stilbenes and lignans.
The ligand is completely encased in a predominantly hydrophobic cavity with one of the phenolic rings nicely superimposed to the A-ring of E2 and the other phenolic ring shifted 1.7 Å from the position of the 17 β-hydroxyl group of the E2 D-ring.
In this structure, the cation ring is now closer to the plane of the phenate ring with the two intersecting with an angle of 17.85° and the two phenolic rings making a larger angle of 46.94°.
