Tetrazole-based inhibitors of the bacterial enzyme N-succinyl-l,l-2,6-diaminopimelic acid desuccinylase as potential antibiotics.
DiPuma T, Thabthimthong T, Kelley EH, Konczak K, Beulke M, Herbert C, S Habeeb Mohammad T, Starus A, Nocek B, Olsen KW, Holz RC, Becker DP.
Based on a hit from a high-throughput screen, a series of phenyltetrazole amides was synthesized and assayed for inhibitory potency against DapE from Haemophilus influenzae (HiDapE). The inhibitory potency was modest but confirmed, with the most potent analog containing an aminothiazole moiety displaying an IC<sub>50</sub> = 50.2 ± 5.0 μM. Docking reveals a potential binding mode wherein the amide carbonyl bridges both zinc atoms in the active site, and the tetrazole forms key hydrogen bonds with Arg330.