General procedure for synthesizing 2-amino-3-[(2-biphenyl-4-yl)-2-oxoethyl]-1-R-1H-benzimidazolium bromides 2

2-Amino-3-[2-(biphenyl-4-yl)-2-oxoethyl]-1-butyl-1H-benzimidazolium bromide (2c)

2-Amino-3-[(2-biphenyl-4-yl)-2-oxoethyl)]-1-[2-(dimethylamino)ethyl-1H-benzimidazolium bromide (2d)

2-Amino-3-[(2-biphenyl-4-yl)-2-oxoethyl)]-1-[2-(diethylamino)ethyl-1H-benzimidazolium bromide (2e)

2-Amino-3-[(2-biphenyl-4-yl)-2-oxoethyl)]-1-[2-(morpholino)ethyl-1H-benzimidazolium bromide (2f)

Synthesis of 2-(biphenyl-4-yl)-9-[2-(dimethylamino)ethyl]-9H-imidazo[1,2-а]benzimidazole hydrochloride (1d)

Inhibition of LPO

ABTS •+ radical cation decolorization

Inhibition of Hb-H 2 O 2 -induced luminol chemiluminescence

Statistical data processing