SEARCH Articles Figures Tables 2- -6,7-dihydro-4//pyrimido isoquinolin-4-ones 3.4- Dihydro-6,7-dimethoxy-isoquinolin 4- pyrimido 6.7- Dimethoxy-3,4-dihydro 6.7- Dimethoxy-4 isoquinoline 9.10- Dimethoxy-2- -6,7-dihydro-4//-pyrimido Isoquinoline 3.4- dihydro-6,7-dimethoxy Pyrimido isoquinolines