Substituted 11-oxo-11H-pyrido[2,1-b]quinazolines and method of
申请人:Hoffmann-La Roche Inc.
公开号:US04348396A1
公开(公告)日:1982-09-07
Pyrido[2,1-b]quinazolines of the formulas ##STR1## wherein R.sub.1, R.sub.1 ', R.sub.2, R.sub.2 ', R.sub.3, R.sub.3 ', R.sub.4 and R.sub.10 are as hereinafter set forth, and processes for the preparation thereof, are described. The compounds of formulas I and II are useful as agents in the prevention of allergic reactions.