Patent ID: 6919358

Claim:
A compound which has the structure wherein X x is a carbon chain which is selected from alkylene of 1, 2, 3 or 4 carbon atoms, alkenylene of 2, 3 or 4 carbon atoms, allenyl or alkynylene of 2, 3 or 4 carbon atoms; X m is a carbon chain which is selected from alkylene of 1 or 2 carbon atoms, alkenylene of 2 carbon atoms or alkynylene of 2 carbon atoms; X n is a carbon chain which is selected from alkylene of 1 or 2 carbon atoms, alkenylene of 2 carbon atoms or alkynylene of 2 carbon atoms; Q is C; A is O; Z is O; R 1 is H or lower alkyl; X is N; R 2 is H, alkyl, alkoxy, halogen, amino or substituted amino; R 2a , R 2b and R 2c are the same or different and are selected from H or alkyl; R 3 is alkyl, arylalkyl, alkoxyarylalkyl, arylalkoxyarylalkyl, or alkylaryloxyarylalkyl; Y is CO 2 R 4 where R 4 is H or alkyl, or a prodrug ester, or stereoisomers thereof, a prodrug ester thereof, or a phamaceutically acceptable salt thereof.