Different cases can be distinguished. (i) Intra- or inter-molecular H-bonding involving the reactive –OH moiety will depress the antioxidant activity if the –OH acts as H-bond donor, while the opposite will g
Amongst the alkylation, diazoesters, alcohols, and alkenes are used as alkylating sources, and the reactions are mostly established with expensive and deleterious 4d and 5d transition metal catalysts (Scheme 1a) [13–21]. However, the employment of challenging alkyl halides as coupling partners in...
phenoxide dianion and higher phenoxide anions are distinguished from the corresponding phenol or other aromatic hydroxyl compounds in that one or more of the phenolic or other aromatic hydroxyl groups are deprotonated in the former. The phenoxide anion can be generally represented by the formula ##STR...
The olive leaf bioactive compounds most associated with such properties are biophenols belonging to the groups of simple phenolic alcohols, such as hydroxytyrosol and tyrosol, flavonoids, such as luteolin 7-O-glucoside, rutin, apigenin 7-O-glucoside and luteolin 4-O-glucoside, and secoiridoids, ...