The present invention is directed to new 4,7-dihydro-pyrazolo[3,4-b]pyridines. The compounds possess Ca2+ -antagonist, antihypertensive, vasodilating and antiangina activity. A process for producing them as well as pharmaceutical compositions containing them are also described.
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(2008/06/13)
Studies on dihydropyridines. II. Synthesis of 4,7-dihydropyrazolo[3,4-b]pyridines with vasodilating antihypertensive activities