Patent ID: 7807687

Claim:
A pyrido[3,2-h]quinazoline of the following structure 8: wherein: u is a single bond or double bond; R 1 and R 2 are selected independently from a, substituted or unsubstituted, aryl, heteroaryl, alkyl of the formula CHR 2 , or an alkyl of the formula CR 3 ; R 3 is selected from H, or a, substituted or unsubstituted, C 1 -C 20 alkyl, C 1 -C 20 aryl, or C 1 -C 20 heteroaryl; and R 4 is selected from H, or a, substituted or unsubstituted, C 1 -C 20 alkyl, aryl, heteroaryl, NH 2 , NHR, NR 2 , N-alkylaryl, N-aryl 2 , carbazolyl, dibenzazepinyl, or CN; wherein, in each instance, R is independently a C 1 -C 20 alkyl.