This invention relates to compounds of formula 1, 2 or 3
a pharmaceutically acceptable salt, or solvate thereof, wherein X
1
, Y, R
1
, R
2
, R
3
, R
4
, and R
5
are as defined herein. The compounds are antimicrobial agents that may be used to treat various bacterial and protozoal infections and disorders related to such infections. The invention also relates to pharmaceutical compositions containing the compounds and to methods of treating bacterial and protozoal infections by administering the compounds of formula 1, 2 or 3.
Nusbiarylins, a new class of antimicrobial agents: Rational design of bacterial transcription inhibitors targeting the interaction between the NusB and NusE proteins
antimicrobial target and reported the identification of a first-in-class inhibitor of bacterial ribosomal RNA synthesis with antimicrobial activities. In this paper, derivatives of the hit compound were rationallydesigned based on the pharmacophore model for chemical synthesis, followed by biological evaluations. Some of the derivatives demonstrated the improved antimicrobial activity with the minimum inhibitory