Substituted isoxazolines and their use as antibacterial agents

摘要

Compounds of the formula (I), or a pharmaceutically-acceptable salt, or an in-vivo-hydrolysable ester thereof, wherein, for example, X is O, S or NH; HET is an optionally substituted C-linked 5-membered heteroaryl ring containing 2 to 4 heteroatoms independently selected from N, O and S; Q is selected from, for example, Q1 and Q2: R² and R³ are independently hydrogen or fluoro; T is selected from a range of groups, for example, an N-linked (fully unsaturated) 5-membered heteroaryl ring system or a group of formula (TC5): wherein Rc is, for example, R¹³CO-, R¹³SO₂- or R¹³CS-; wherein R¹³ is, for example, optionally substituted ( 1 - 10 C)alkyl or R¹⁴C(O)O( 1 - 6 C)alkyl wherein R¹⁴ is optionally substituted ( 1 - 10 C)alkyl; are useful as antibacterial agents; and processes for their manufacture and pharmaceutical compositions containing them are described.