Preparation of novel antibacterial agents. Replacement of the central aromatic ring with heterocycles

This paper describes the discovery of anthranilic acid derivatives as potent antibacterial agents against Gram-positive organisms. Discovery of novel antibacterial agents is a significant challenge. We have recently reported on our discovery of novel antibacterial agents in which we have rapidly optimized potency utilizing a parallel chemistry approach. These advanced leads suffer from high affinity for human serum albumin (HSA). In an effort to decrease the affinity for HSA we have prepared a series of heterocyclic analogs, which retained antibacterial activity and demonstrated reduced affinity for HSA.