Peptide deformylase inhibitors

A compound according to formula (I):

• wherein:
• X is O;
• n is an integer 1 or 2;
• Ar is an aryl group selected from the group consisting of azaindolyl, pyrazinyl, isoxazolyl, oxazolyl, thiazolyl, isothiazolyl, imidazolyl and isoquinolinyl;
• such that Ar may be optionally substituted with one, two, or three substituents selected from the group consisting of optionally substituted alkyl or cycloalkyl of one to nine carbons, halo, alkoxy of one to nine carbons, hydroxy, amino, hydroxyalkyl of one to nine carbons, alkoxyalkyl, wherein the alkyl and alkylene groups are independently of one to nine carbons, optionally substituted aryl or optionally substituted heteroaryl, carboxy, and alkoxycarbonyl.