Patent ID: 7101881

Claim:
A compound of the formula wherein X is a linker group selected from the group consisting of CH 2 , CH 2 CH 2 , C═O, C═OCH 2 , CH 2 C═O, OCH 2 , OCH 2 CH 2 , CH 2 O, and CH 2 CH 2 O, and Y is an alkyl or aryl group, wherein the aryl group is selected from phenyl, or pyridyl; wherein the phenyl may be optionally substituted with one or more substituents independently selected from halogen, trifluoromethyl, OR 2 , morpholinyl, 2-oxo-oxazolidin-3-yl or 2-oxo-pyrrolidin-1-yl; wherein R 2 is selected from the group consisting of alkyl and C 6 –C 14 aryl.