title: Substituent activity relationship studies on new azolo benzoxazepinyl oxazolidinones.
abstract: In an effort to discover potent antibacterials based on the entropically favored 'bioactive conformation' approach, a series of novel tricyclic molecules mimicking the conformationally constrained structure of Linezolid is reported. Based on the initial tricyclic molecule 1, the benzazepine derivative 2 was designed where the tricyclic structure had more flexibility around C-N bond compared to 1. While, the molecule 2 was less active, the molecule 3 showed promising antibacterial activity presumably after having obtained rigidity due to pyrrole ring. The syntheses, SAR studies, and evaluation of 3 as a lead compound are reported.
authors.affiliation: Anti-infective Group, Discovery Research, Dr. Reddy's Laboratories Ltd., Miyapur, Hyderabad 500 049, India.
authors.forename: Jagattaran
authors.initials: J
authors.lastname: Das
authors.forename: M
authors.initials: M
authors.lastname: Sitaram Kumar
authors.forename: D
authors.initials: D
authors.lastname: Subrahmanyam
authors.forename: T V R S
authors.initials: TV
authors.lastname: Sastry
authors.forename: C
authors.initials: C
authors.lastname: Prasad Narasimhulu
authors.forename: C V
authors.initials: CV
authors.lastname: Laxman Rao
authors.forename: M
authors.initials: M
authors.lastname: Kannan
authors.forename: M
authors.initials: M
authors.lastname: Roshaiah
authors.forename: Riti
authors.initials: R
authors.lastname: Awasthi
authors.forename: Santosh N
authors.initials: SN
authors.lastname: Patil
authors.forename: H M
authors.initials: HM
authors.lastname: Sarnaik
authors.forename: N V S
authors.initials: NV
authors.lastname: Rao Mamidi
authors.forename: N
authors.initials: N
authors.lastname: Selvakumar
authors.forename: Javed
authors.initials: J
authors.lastname: Iqbal
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D001552:Benzazepines / Q000737:chemistry; D018716:Molecular Mimicry; D023303:Oxazolidinones / Q000138:chemical synthesis* / Q000494:pharmacology*; D011758:Pyrroles / Q000737:chemistry; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D001552:Benzazepines; D023303:Oxazolidinones; D011758:Pyrroles