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

1991-11-25

1995-10-24

Rizzo, Nicholas

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 31545

Patent

active

RE0350729

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 antiarryhythmic agents.

REFERENCES:
patent: 4460586 (1984-07-01), Berthold
patent: 4460590 (1984-07-01), Moller
patent: 4603203 (1986-07-01), Furukawa et al.
patent: 4714698 (1987-12-01), Roch et al.
patent: 4876257 (1989-10-01), Hajos et al.

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