4-[1-(4-Bromo-2-fluoro-benzyl)-1H-benzoimidazol-2-yl]-3,3-dimethyl-butyric acid ethyl ester

3,3-Dimethyl-4-[1-(4-nitro-benzyl)-1H-benzoimidazol-2-yl]-butyric acid ethyl ester

3,3-Dimethyl-4-[1-(3-trifluoromethyl-benzyl)-1H-benzoimidazol-2-yl]-butyric acid ethyl ester

4-[5,6-Dichloro-1-(4-chloro-benzyl)-1H-benzoimidazol-2-yl]-3,3-dimethyl-butyric acid ethyl ester

3,3-dimethyl-5-oxo-heptanoic acid ethyl ester