Patent ID: 8101605

Claim:
A compound of the following structure (I): or a stereoisomer or pharmaceutically acceptable salt thereof, wherein: X is O or S(O) p where p is 0, 1 or 2; R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are independently hydrogen, halogen, hydroxyl, cyano, unsubstituted or substituted alkyl, unsubstituted or substituted alkoxy, —COOR 8 , —NR 9 R 10 , —CONR 11 R 12 , —NR 13 COR 14 or —OSO 2 R 15 ; R 7 is hydrogen; and R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 and R 15 are independently hydrogen, unsubstituted or substituted alkyl or unsubstituted or substituted alkoxy, or R 9 /R 10 or R 11 /R 12 taken together with the nitrogen to which they are attached form a heterocycle.