Bronchodilatory azepino(1,2-A)pyrimidine derivatives and acid addition
申请人:Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt
公开号:US04588526A1
公开(公告)日:1986-05-13
The invention relates to new azepino[1,2-a]pyrimidine derivatives--of the general formula ##STR1## wherein p=1, 2 and acid addition salts thereof which can be prepared by (a) reacting a compound of the formula ##STR2## with a compound of the general formula ##STR3## wherein p is as defined above and R.sup.7 is alkoxycarbonyl containing 2 to 5 carbon atoms or carboxamido or (b) reacting a compound of the general formula ##STR4## wherein R.sup.8 is alkyl containing 1 to 4 carbon atoms with a compound of the general formula ##STR5## wherein R.sup.7 is as defined above and if desired converting a compound of the general formula I to acid addition salt thereof or setting it free from the salt thereof. The new compounds show bronchodilatory activity.
New types of bronchodilator agents, bi- and tricyclic nitrogenbridgeheadcompounds with a pyrimidin-4(3H)-one ring, were synthesized and evaluated for bronchodilator activity against serotonin-, histamine-, and acetylcholine-induced spasms in the guinea pig Konzett-Rössler test. The structure-activity relationships are discussed. The effects of some bi- and tricyclic derivatives on the human bronchus