5-(Pyridinyl)-1H-pyrazolo[3,4-b]pyridine-3-amines, their use as

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...

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546119, 546257, 546258, C07D47102, A61K 31415

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active

042646030

ABSTRACT:
1-R-5-PY-6-Q-1H-pyrazolo[3,4-b]pyridin-3-amines or pharmaceutically-acceptable acid-addition salts thereof, which are useful as cardiotonics, are prepared by reacting a 2-halo-5-PY-6-Q-nicotinonitrile with 1-R-hydrazine, where R is hydrogen, lower-alkyl, lower-hydroxyalkyl, 2,3-dihydroxypropyl or lower-alkoxyalkyl, Q is hydrogen or lower-alkyl, and PY is 4- or 3-pyridinyl or 4- or 3-pyridinyl having one or two lower-alkyl substituents. Also shown are cardiotonic compositions and method for increasing cardiac contractility using said compounds or salts.

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