Patent ID: 7476672

Claim:
A compound of Formula (Ib): wherein R 5b is hydrogen, (C 1-10 )alkanyl-R 7b or phenyl; R 6b is hydrogen or (C 1-4 )alkanyl-R 7b ; R 7b is hydrogen, OC(O)—R a2 , N(C 1-4 alkanyl) 2 or R a2 ; R a2 is pyrrolidinyl-(R 12b ) q , piperidinyl-(R 12b ) q , morpholinyl-(R 12b ) q or phenyl; (R 12b ) q is hydrogen or (C 1-4 )alkanyl; R 2b is hydrogen or (C 1-4 )alkanyl-R 7b ; R 3b and R 4b are independently hydrogen, (C 1-4 )alkanyl-R 7b , chlorine or fluorine; and, q is 1; and enantiomers, diastereomers, tautomers, solvates, and pharmaceutically acceptable salts thereof.