Abstract: 3-Substituted 3,4-dihydrothieno[2,3-d]pyrimidin-4-one derivatives, production and use thereof. The invention relates to 3,4-dihydrothieno[2,3-d]pyrimidin-4-one derivatives which are substituted in position 3 by 5-membered heteroaryl which may be fused to an aryl or heteroaryl radical, where the heteroaryl and, if appropriate, the fused aryl or heteroaryl radical may have 1, 2 or 3 substituents selected independently of one another from C1-5-alkyl, C1-5-alkoxy, C1-5-alkylthio, halogen, CN, halo-C1-5-alkyl, halo-C1-5-alkoxy, hydroxy, —NH2, —N(R6)2, —NH(R6), aryl, aryloxy, aralkyl, aralkyloxy and heteroaryl, where the substituents aryl, aryloxy, aralkyl, aralkyloxy and heteroaryl may have 1, 2 or 3 substituents selected independently of one another from C1-5-alkyl, C1-5-alkoxy, C1-5-alkylthio, halogen, CN, halo-C1-5-alkyl, halo-C1-5-alkoxy, hydroxy, —NH2, —N(R6)2 and —NH(R6). The preparation and use of these derivatives, especially for therapeutic purposes, e.g.

Abstract: Compounds of the formula I 1

Abstract: Use of pyrimidine derivatives of the formula I where the substituents are as defined in the description, and of their physiologically tolerated salts for producing medicaments for the prophylaxis and treatment of cerebral ischemia and strokes.