Fecha de publicación: 25/08/2005 Fuente: WIPO "miel" Compounds of the formula (I), or a pharmaceutically-acceptable salt, or an in-vivo-hydrolysable ester thereof, (I) R1a is NH(C=W)R5 or (a); W is O or S; R2 and R3 are for example H or F; R1 is for example hydrogen, or halogen; R5 is selected from hydrogen, (2-6C)alkyl (optionally substituted); R6 and R7 are independently selected from hydrogen, and (1-4C)alkyl (optionally substituted); wherein R4 is either a hydroxymethyl substituent on C-4' of the isoxazoline ring; or R4 is a hydroxymethyl substituent on C-5' of the isoxazoline ring and the stereochemistry at C-5' of the isoxazoline ring and at C-5 of the oxazolidinone ring is selected, such that the compound of formula (I) is a single diastereomer; are useful as antibacterial agents; and processes for their manufacture and pharmaceutical compositions containing them are described.