Hydroxycinnamic Acid Antioxidants: An Electrochemical Overview

Table 2

Hydroxyhydrocinnamic acids and ester derivatives.

	R1	R2	R3
Hydrocaffeic acid	OH	H	H
Hexyl hydrocaffeate	OH	H	CH2(CH2)4CH3
Hydroferulic acid	OCH3	H	H
Hexyl hydroferulate	OCH3	H	CH2(CH2)4CH3