| abstract |
3-substituted 3,4-dihydro-thieno (2,3-d) pyrimidine-derivatives of formula (I), in which R1 and R2 means a hydrogen atom or a C1-C4-alkyl group, R3 is halogen if necessary atoms, C1-C4-alkyl, trifluormethyl-, trifluormethoxy-, hydroxy-, C1-C4-alkoxy-, amino-, monomethylamino-, dimethyl-amino-, cyano- or nitro groups, phenyl-, means pyridyl-, pyrimidinyl- or pyrazinyl group, this group, if necessary, with the benzol nucleus, which halogen atoms, C1-C4-alkyl-, hydroxy-, trifluormethyl-, C1-C4-alkoxy-, amino-, cyano- or It can be substituted in mono or other form with nitro groups and may contain 1 nitrogen atom if necessary, or may be matched with a 5- or 6-segmented ring which may contain 1-2 oxygen atoms. |