4-{4-[5-iodomethyl-2-oxo-1,3-oxazolidine-3-yl]-phenyl}-morpholine-3-one

4-{4-[5-chloromethyl-2-oxo-1,3-oxazoIidine-3-yl]-phenyl}-morpholine-3-one

4-(4-((R)-5-(methanesulfonyloxymethyl)-2-oxooxazolidin-3-yl)phenyl)morpholin-3-one