2,4-diamino-7-(4-carboxyphenyl)-5-deaza-6,7,8,9-tetrahydropyrido<3,4-g>pteridine

4-(2-Amino-4-oxo-3,5,7,8-tetrahydro-4H-1,3,6,9-tetraaza-anthracen-6-yl)-benzoic acid

2-amino-7-<4-(tert-butoxycarbonyl)phenyl>-5-deaza-6,7,8,9-tetrahydro-4(3H)-pyrido<3,4-g>pteridinone

2,4-diamino-7-<4-(tert-butoxycarbonyl)phenyl>-5-deaza-6,7,8,9-tetrahydropyrido<3,4-g>pteridine

4-[5-(2,2-Dicyano-vinyl)-4-pyrrolidin-1-yl-3,6-dihydro-2H-pyridin-1-yl]-benzoic acid tert-butyl ester