3-Amino-4-phenyl-1H-pyrazolo[3,4-b]pyridines and salts thereof

摘要

Compounds of the formula wherein R1 is mono- or di-substituted amino, where the substituents are selected from the group consisting of alkyl of 1 to 6 carbon atoms, cyclohexyl, allyl and benzyl; unsubstituted, mono-substituted or di-substituted pyrrolidino, piperidino, hexamethyleneimino, morpholino, piperazino, thiomorpholino, 1-oxido-thiomorpholino or 1,1-dioxido-thiomorpholino, where the substituents are selected from the group consisting of methyl, hydroxymethyl, hydroxyl, phenyl and benzyl; 1,2,5,6-tetrahydropyridino; 1,2,3,4-tetrahydroisoquinolino; indolino; or 3,6-ethylene-hexamethyleneimino; R2 is hydrogen, methyl or benzyl; and R3 is hydrogen, halogen, alkyl of 1 to 3 carbon atoms or alkoxy of 1 to 3 carbon atoms; and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as antiphlogistics and antithrombotics.