Pyrazines, pyrimidines and pyridazines useful in the treatment of senile
申请人:Merck Sharp & Dohme Limited
公开号:US05260293A1
公开(公告)日:1993-11-09
The present invention provides pyrazines, pyridazines or pyrimidines, or salts or prodrugs thereof, substituted on one of the ring carbon atoms thereof 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.
Synthesis and muscarinic activity of quinuclidinyl- and (1-azanorbornyl)pyrazine derivatives
作者:Leslie J. Street、Raymond Baker、Tracey Book、Austin J. Reeve、John Saunders、Timothy Willson、Rosemarie S. Marwood、Shailendra Patel、Stephen B. Freedman
DOI:10.1021/jm00080a014
日期:1992.1
been explored. Optimal muscarinic agonist activity was observed for unsubstituted pyrazines in the azanorbornane series. The exo-1-azanorbornane 18a is one of the most efficacious and potent centrally active muscarinic agonists known. Studies on the 3-substituted derivatives have provided evidence of the preferred conformation of these ligands for optimal muscarinicactivity. Substitution at C6 gave