Patent ID: 7745646

Claim:
A compound of structural Formula IV or a salt thereof, wherein: R 1 and R 2 are independently selected from the group consisting of —(CH 2 ) s G 1 G 2 G 3 , acyl, acylalkyl, carboxyalkyl, cyanoalkyl, alkoxy, alkoxyalkyl, amidoalkyl, amino, alkyl, alkylalkoxy, aminoalkyl, alkenyl, alkynyl, carboxyl, carboxyalkyl, ether, heteroalkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, heterocycloalkyl, heterocycloalkylalkyl, aralkyl, aryl, guanidine, heteroaryl, heteroaralkyl, and hydroxyalkyl, any of which may be optionally substituted; s is 0-8; G 1 is selected from the group consisting of alkoxy, amino, amido, carbonyl, hydroxy, ether, an amino acid, and null; G 2 is selected from the group consisting of alkyl, alkoxy, amino, aryl, halo, haloalkyl, heterocycloalkyl, heteroaryl, carboxylalkylamino, guanidine, an amino acid, and null, any of which may be optionally substituted; G 3 is selected from the group consisting of alkyl, alkoxy, amino, hydroxy, ether, carboxyl, hydroxamic acid, an amino acid, phosphonate, phosphoamide, and null, any of which may be optionally substituted; when s is 0, G 1 , G 2 , and G 3 may not all together be null; R 3 and R 4 are independently selected from the group consisting of alkoxy, lower alkyl, halogen and hydrogen; R 5 is selected from the group consisting of (CH 2 ) p , C(O)NH, N(R 7 ) and S(O) q ; p is 1,2,3 or 4; q is 0, 1 or 2; R 6 is selected from the group consisting of aryl heteroaryl, either of which may be optionally substituted; R 7 selected from the group consisting of hydrogen and optionally substituted lower alkyl; R 17 is selected from the group consisting of hydrogen, halogen, hydroxyl, lower alkyl, hydroxyalkyl, haloalkyl, alkoxy, haloalkoxy, amino, aminoalkyl and aminoalkoxy.