Synthesis and muscarinic activities of 1,2,4-thiadiazoles
作者:Angus M. MacLeod、Raymond Baker、Stephen B. Freedman、Shailendra Patel、Kevin J. Merchant、Michael Roe、John Saunders
DOI:10.1021/jm00169a041
日期:1990.7
synthesized by reaction of the lithium enolate of the 3-methoxycarbonyl compounds followed by ester hydrolysis and decarboxylation. The receptor-binding affinity and efficacy of these compounds as muscarinic ligands was assessed by radioligand binding assays using [3H]-N-methylscopolamine and [3H]oxotremorine-M. Optimal agonist affinity was observed for 3'-methyl compounds. Smaller substituents (H) retained
Thiadiazoles useful in the treatment of senile dementia
申请人:Merck Sharpe & Dohme Ltd.
公开号:US05405853A1
公开(公告)日:1995-04-11
A class of novel thiadiazoles, substituted on one of the ring carbon atoms with a non-aromatic azacyclic or azabicyclic ring system, and substituted on the other ring carbon atom with a substituent of low lipophilicity, or a hydrocarbon substituent; are potent muscarinic agonists, and have good CNS penetrability. The compounds are therefore useful in the treatment of neurological and mental illnesses, and are also of benefit in the treatment of severe painful conditions.