abstract |
ABSTRACT OF THE DISCLOSURE PYRIMIDOISOQUINOLINE DERIVATIVES Pyrimidoisoguinoline derivatives of the formula: wherein R1 is hydrogen, halogen or lower alkyl, R2 is amino, nitro or acylamino and R3 is carboxy or protect2d carboxy, and methods therefor. The compounds, and pharmaceutically acceptable salts thereof, have activity as antiallergic agents. |