4-substituted pyrazolo[3,4-d]pyrimidine derivatives

Details 4-substituted pyrazolo[3,4-d]pyrimidine derivatives 4-substituted pyrazolo[3,4-d]pyrimidine derivatives

1989-11-22

1991-03-19

Rizzo, Nicholas S.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

544256, 544262, C07D48704, A61K 31415

Patent

active

050011278

ABSTRACT:
4-Substituted pyrazolo[3,4-d]pyrimidine derivatives and a method of synthesis for the derivatives are described. The 4-substituted pyrazolopyrimidine derivatives are useful as cardiotonic agents and antiarrhythmic agents.

REFERENCES:
patent: 4460303 (1980-12-01), Furikawa et al.
patent: 4460986 (1984-07-01), Berthold
patent: 4714698 (1987-12-01), Roch et al.

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