1 0WX 4-{2-[(cyclohexylmethyl)amino]ethyl}-2-{[2-(morpholin-4-yl)ethyl]amino}-3,7-dihydro-8h-imidazo[4,5-G]quinazolin-8-one 1.000 2 AAQ 6-amino-4-[2-(benzylamino)ethyl]-2-(methylamino)-1,7-dihydro-8h-imidazo[4,5-G]quinazolin-8-one 0.765 3 PK2 6-amino-4-{2-[(cyclohexylmethyl)amino]ethyl}-2-(methylamino)-1,7-dihydro-8h-imidazo[4,5-G]quinazolin-8-one 0.765 4 AEK 4-{2-[(cyclopentylmethyl)amino]ethyl}-2-(methylamino)-3,7-dihydro-8h-imidazo[4,5-G]quinazolin-8-one 0.706