| abstract |
Pharmacologically valuable basic substituted pyridazines of the general formula I wherein R 1 , R 2 and R 3 are independently hydrogen, halogen, hydroxy, nitro, trifluoromethyl, alkyl, alkoxyalkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, phenyl, alkoxy, hydroxyalkoxy, alkoxyalkoxy, alkenyloxy, alkynyloxy, cycloalkoxy, phenalkoxy , Alkanoyl, acylamino, an -NH-CO-R 9- radical, where R 9 is morpholino, piperidino or 1-pyrrolidinyl, an optionally substituted ureido radical, R 4 is hydrogen or lower alkyl and W is hydrogen, chlorine or bromine , as well as their acid addition salts and their preparation by analogy. |