Patent ID: 6291489
Filing Date: 2001-09-18
Classification: A61P,C07D

Abstract:
A compound of the formula ##STR72##wherein:R.sup.1 is selected from the group consisting of nitro, amino and protected amino;R.sup.2 is selected from the group consisting of H, fluoro, chloro, CF.sub.3, nitro, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxy, amino and protected amino;X.sup.1 is OH or a suitable leaving group;racemic mixtures thereof;R enantiomers thereof, wherein said R enantiomers are essentially free of their corresponding S enantiomers; andS enantiomers thereof, wherein said S enantiomers are essentially free of their corresponding R enantiomers.