Patent ID: 8653062

Claim:
A compound having Formula I, its enantiomers, diastereoisomers, tautomers or a pharmaceutically acceptable salt thereof, wherein: R 1 is C—R 11 ; R 2 is optionally substituted aromatic heterocycle, optionally substituted non-aromatic heterocycle, optionally substituted cycloalkyl, optionally substituted cycloalkenyl or optionally substituted aryl; R 3 is O or S; R 4 is optionally substituted aryl; R 5 is H, halogen or —OC 1-3 alkyl; R 6 is H; R 7 is H or C 1-6 alkyl; R 8 is H; R 9 is CH or N; R 10 is carboxylic acid; R 11 is H; a is 0, 1, 2 or 3; b is 0, 1, 2 or 3; c is 1; d is 0 or 1; e is 0; f is 1; g is 0; L is CHR 17 or O; R 17 is H or C 1-3 alkyl; and with the proviso that when R 3 is O or S and b is 0 or 1 then L is not O.