Abstract
Novel antibacterial biaryl oxazolidinones bearing an aza-, an oxa-, or a thiabicyclo[3.1.0]hex-6-yl ring system were synthesized, and their in vitro antibacterial activity and structure-activity relationships (SAR) were evaluated. Most of the synthesized biaryl bicyclo[3.1.0]hex-6-yl oxazolidinones showed good antibacterial activity against the Gram-positive and -negative bacteria tested. Regarding SAR trends among the C-ring subtypes, the pyridyl ring was preferable to the phenyl ring. The results showed that the structural variety of the C-ring has a greater impact on antibacterial activity than that of the B-ring. A cyano group at the D-ring C-6 position plays an important role in the highly potent antibacterial activity.
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