Piperazino quinazoline bronchodilators

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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A61K 31505

Patent

active

039669360

ABSTRACT:
A series of novel 4-piperazino-6,7-dialkoxyquinazolines and 1-piperazino-6,7-dialkoxyisoquinolines have been prepared, including their acid addition salts. These compounds are useful in therapy as bronchodilators and as smooth muscle relaxants. Methods for their preparation from known compounds are provided.

REFERENCES:
patent: 2593798 (1952-04-01), Robinson
patent: 3723434 (1973-03-01), Cronin

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