Abstract
Paracetamol is a more potent antioxidant than salicylic acid on the several oxidative stress-forced models. A possible mechanism of hydroxylation by the hydroxyl radicals and their antioxidant properties was performed by molecular modeling using quantum chemical calculations at the B3LYP level of theory. The calculation was made in gas phase and water using PCM method. The electron abstraction for hydroxylated paracetamol derivatives is more favored than hydroxylated salicylic acid derivatives. The increase in antioxidant capacity is more observed for hydroxylated derivatives of the paracetamol than salicylic acid. Some hydroxylated derivatives of paracetamol and salicylic acid were more reactive than trolox by hydrogen transfer. Their antioxidant capacity can be increased by number and position of the hydroxyl group.
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