A series of novel 4”-O-2-arylbenzimidazolyl derivatives of clarithromycin were synthesized and evaluated. These 4”-O-2-arylbenzimidazolyl derivatives demonstrated excellent activity against erythromycin-susceptible strains and showed remarkably improved activity against erythromycin-resistant strains compared with the references. In particular, compound 7c, which possesses the terminal 2-(2-methoxyphenyl) benzimidazolyl group on the C-4” ...