A series of high-performance polyimide copolymer (co-PI) fibers containing phenylenebenzoxazole moiety with one hydroxyl group are synthesized based on the copolymerization of 3,3′,4,4′-biphenyl 3,3′,4,4′-biphenylanhydride (BPDA) witetracarboxylicmonomers, namely, p-phenylenedianhydridePDA) and 5-anino-2-(2-hydroxy-4-aminoBPDAene)-benzoxazole (p-mHBOA), through a twithtwo methodiamine
The structure of CAPE, including a hydrophobic/aromatic moiety with a hydroxyl group, is consistent with known Nrf2 activators, which are thought to react with Keap1 (Kelch ECH-associating protein 1; the cytoplasmic Nrf2 regulator), thereby releasing Nrf2 for translocation to the nucleus [68].
These results demonstrated that using facile synthetic routes to constructing PDIs molecules with hydroxyl moiety was a useful strategy for designing high performance fluoride recognization.
Most of the compounds with hydroxyl moiety either at the meta or para position of 2- or 6-phenyl ring in combination with thienyl or furyl group at 4-position of central pyridine displayed significant topoisomerase II inhibitory activity and cytotoxicity.
DPPH radical scavenging activity evaluation showed that compounds with hydroxyl and pyrrole moieties had antioxidant effects.
Hydroxyl-functionalized CNTs are prepared by reacting fluorinated CNTs with moieties comprising terminal hydroxyl groups and then to obtain organosilane-functionalized polymer-interacting CNTs by reacting the hydroxyl-functionalized CNTs with organofunctionalized silanol (hydrolyzed organoalkoxysilanes) bearing "polymer-interacting" functional moieties.
Ginsenosides, phytosterols from Panax ginseng, are natural cholesterol derivatives with hydroxyl groups and oligosaccharide moieties, so many investigators have studied effects on which these ginsenosides might have against crucial functions of lipid rafts.
The unstable azo (–NN–) linkage of 7a was transformed to more stable carbon-carbon, ether or amide linkages through the synthesis of the 5-hydroxyl-pyridine moieties with substituents at 2 position via a Diels-Alder reaction.
6 AHAs are a group of hydrophilic organic acids which contain a carboxylic acid moiety with an adjacent hydroxyl group in the alpha position.
Structure activity relationship study revealed that indenopyridine compounds with hydroxyl group at 2-phenyl ring in combination with furyl or thienyl moiety at 4-position are important for topoisomerase inhibition.
