2-amino-5,6-dihalo-3,4-dihydroquinazolines with blood platelet reducing properties

Abstract

Compounds of formula (E) (wherein X and Y, which may be the same or different, each represents Cl, Br or F) and tautomers thereof have been found to have enhanced platelet count reducing properties. Also provided are methods for synthetically making the compounds of formula (E) and pharmaceutically acceptable addition salts thereof and a method of reducing the platelet count in patient by administering to the patient a platelet reducing effective amount of a compound of formula (E) preferably together with a pharmaceutically acceptable carrier. A pharmaceutical composition is also provided which contains a compound of formula (E) as the active ingredient together with pharmaceutically acceptable excipients. Further provided is a compound of formula (E) for use in therapy and the use of a compound of formula (E) for preparing a medicament for reducing platelet count in a patient.

Dependencies are inferred from the claim text.