Patent ID: 7659265

Claim:
A compound of formula I of the structure: wherein: R 1 and R 2 are, independently, H, C 1 to C 6 alkyl, or substituted C 1 to C 6 alkyl; or R 1 and R 2 are fused to form a ring comprising —CH 2 (CH 2 ) n CH 2 —, —CH 2 CH 2 C(CH 3 ) 2 CH 2 CH 2 —, —O(CH 2 ) p CH 2 —, —O(CH 2 ) q O—, —CH 2 CH 2 OCH 2 CH 2 —, or —CH 2 CH 2 NR 6 CH 2 CH 2 —; n is 1 to 5; p is 1 to 4; q is 1 to 4; R 3 is H, OH, NH 2 , CN, halogen, C 1 to C 6 alkyl, substituted C 1 to C 6 alkyl, C 2 to C 6 alkenyl, substituted C 2 to C 6 alkenyl, C 2 to C 6 alkynyl, substituted C 2 to C 6 alkynyl, or COR A ; R A is H, C 1 to C 6 alkyl, substituted C 1 to C 6 alkyl, C 1 to C 6 alkoxy, substituted C 1 to C 6 alkoxy, C 1 to C 6 aminoalkyl, or substituted C 1 to C 6 aminoalkyl; R 4 is H, C 1 to C 6 alkyl, substituted C 1 to C 6 alkyl, C 1 to C 6 alkoxy, substituted C 1 to C 6 alkoxy, C 1 to C 6 aminoalkyl, or substituted C 1 to C 6 aminoalkyl; R 5 is C 1 to C 6 alkyl, substituted C 1 to C 6 alkyl, or COR A ; R 6 is H or C 1 to C 6 alkyl; X is S; Q is O or S; or a pharmaceutically acceptable salt thereof.