Patent ID: 8034829

Claim:
A compound according to formula D wherein n is 1; X is C; R 1 , R 2 and R 3 are independently H, NH 2 , NHR 5 , or N(R 5 ) 2 ; R 4 is one or two substituents independently selected from H, 3,4-methylendioxide, halogen, —O—R 5 , and C 1 -C 6 alkyl optionally substituted with —O—R 5 ; R 5 is C 1 -C 6 alkyl; and when there is more than one group R 5 , each of the R 5 groups may be the same or different or a pharmaceutically acceptable salt thereof; with the proviso that the compound is not a compound having R 1 ═R 2 ═R 3 ═H.