Pyrazines, pyrimidines and pyridazines, useful in the treatment of senile dementia
申请人:MERCK SHARP & DOHME LTD.
公开号:EP0327155A2
公开(公告)日:1989-08-09
The present invention provides pyrazines, pyridazines or pyrimidines, or salts or prodrugs thereof, substituted on one of the ring carbon atoms therefore with a non-aromatic azacyclic or azabicyclic ring system; and independently substituted on each of the other ring carbon atoms with a substituent of low lipophilicity or a hydrocarbon substituent; which compounds stimulate central muscarinic acetylcholine receptors and therefore are useful in the treatment of neurological and mental illnesses.