Patent ID: 7166585

Claim:
A compound of Formula I, and pharmaceutically acceptable salts, hydrates, solvates and prodrugs thereof: wherein R 1 and R 2 are independently selected from the group consisting of OH, OC 1-4 alkyl, and halo; R 3 is C 1-4 alkyl; R 4 is selected from the group consisting of aryl and heteroaryl with both aryl and heteroaryl being unsubstituted or substituted with 1–5 groups independently selected from C 1-4 alkyl, hydroxy-substituted C 1-6 alkyl, OC 1-4 alkyl, OH, CF 3 , OCF 3 , halo, SH, SC 1-4 alkyl, NH 2 , nitro, NHC 1-4 alkyl, N(C 1-4 alkyl)(C 1-4 alkyl), CN, C(O)OH, C(O)OC 1-4 alkyl, C(O)NHC 1-4 alkyl, CH═N—OC 1-4 alkyl, NHC(O)C 1-4 alkyl, OC(O)C 1-4 alkyl, SOC 1-4 alkyl, SO 2 C 1-4 alkyl, SO 2 NHC 1-4 alkyl and SO 2 NH 2 ; R 5 are either both H or together form ═CH 2 ; R 6 and R 7 are both H or are taken together to form a C 3-6 cyloalkyl ring; x is 0–2; and represents a single or a double bond.