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• W2529014779 abstract "Eight curcumin derivatives were synthesized by esterification of its phenol groups with first and second generation polyester dendrons (dendronization) or glutaric anhydride (glutarization), in a systematic scheme where mono and disubstitutions were carried out. The dendronization of curcumin (CUR) affects the fragmentation patterns in mass spectra, particularly for the disubstituted OH-terminated second generation derivative (labeled as 2C2), undergoing the cleavage of one of the aromatic rings. This fact may be related to the antioxidant capacity of 2C2, evaluated following its reaction with superoxide (O2•-) by cyclic voltammetry (CV). As opposed to CUR and the rest of its derivatives that react with O2•- via proton transfer reactions, 2C2 reacts with O2•- mainly by hydrogen atom transfer. 2C2 radical scavenging activity versus O2•- is higher than the one observed for CUR. From DFT calculations, independently of the substitution on CUR, the frontier molecular orbitals remain nearly unaltered as compared to CUR. On the other hand, when CUR is dendronized, the electric dipole moment notably changes as a function of the nature of the terminal groups." @default.
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• W2529014779 date "2016-10-01" @default.
• W2529014779 modified "2023-10-16" @default.
• W2529014779 title "Systematic Derivatization of Curcumin and its Effect on Antioxidant Capacity and Action Mechanism. Cyclic Voltammetry and DFT as Tools of Analysis" @default.
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• W2529014779 doi "https://doi.org/10.1002/slct.201600992" @default.
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