Patent ID: 8101645

Claim:
A compound of Formula I pharmaceutically acceptable salts, enantiomers or stereoisomers thereof, wherein X is CH, S or N; Y is CH, S or N; L is SO, S(O) 2 or (C 1 -C 4 )alkyl; A is optionally substituted aryl, optionally substituted (C 3 -C 6 )cycloalkyl, optionally substituted heteroaryl, optionally substituted heterocyclyl or optionally substituted aryl-S(O) 2 —Z; wherein Z is N(R 5 ) 2 , optionally substituted (C 1 -C 6 )alkyl, optionally substituted (C 3 -C 6 )cycloalkyl or optionally substituted heterocyclyl; R 1 , R 2 , R 3 and R 4 are independently H or (C 1 -C 4 )alkyl; and R 5 is independently H, (C 1 -C 3 )alkyl, (C 3 -C 6 )cycloalkyl, —CO—(C 1 -C 6 )alkyl, or —CON(R 1 ) 2 ; provided that X and Y are not both S, not both CH 2 and not both N.