**Abbreviations**

LDL, low-density lipoprotein; SAR, structure and activity relationships; NDGA, nordihy‐ droguaiuretic acid; DPPH, 1,1-diphenyl-2-picrylhydrazyl; EDTA, ethylenediaminetetraace‐ tic acid; IC50, the half maximal inhibitory concentration; DCC, *N*,*N'* dicyclohexylcarbodiimide; gallic acid, 3,4,5-trihydroxybenzoic acid; gallate, 3,4,5 trihydroxybenzoate; protocatechuic acid, 3,4-dihydroxybenzoic acid; protocatechuates, 3,4 dihydroxybenzoate; 13-HPOD, 13(*S*)-hydroperoxy-9*Z*,11*E*-octadienoic acid; ESR, electron spin resonance; *K*<sup>i</sup> , inhibition constant; *K*<sup>m</sup> , Michaelis constant; *V*max, maximum velocity; log *P*, partition coefficient
