Patent ID: 7820691

Claim:
A compound having the chemical formula: wherein: R 1 is one of: H, lower alk, cycloalk, aryl, arylalkyl; R 2 and R 3 are each independently selected from one of: H, lower alk, cycloalk, aryl, arylalkyl; or R 2 and R 3 are together —(CH 2 ) n — and n is 6, 5 or 4; or R 2 and R 3 are together —CH(lower alkyl)(CH 2 ) n — and n is 5, 4 or 3; R 4 and R 5 are each independently selected from one of: H, NH 2 , OH or lower alk; or R 4 and R 5 are together O, S or NOH; R 6 is independently selected from the group consisting of: hydrogen or F, R 7 and R 8 are independently selected from the group consisting of: hydrogen, F, Cl, or methoxy, wherein at least one of R 6 , R 7 , and R 8 is not hydrogen; R 9 is H; R 10 is one of: H, lower alkyl, cycloalk, aryl, arylalkyl; or pharmaceutically acceptable tautomers thereof.