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Potent, selective, and orally active adenosine A2A receptor antagonists: arylpiperazine derivatives of pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidines.

AbstractAntagonism of the adenosine A2A receptor offers great promise in the treatment of Parkinson's disease. Employing the known pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidine A2A antagonist SCH 58261 as a starting point, we identified the potent and selective (vs. A1) antagonist 11h, orally active in the rat haloperidol-induced catalepsy model. We further optimized this lead to the methoxyethoxyethyl ether 12a (SCH 420814), which shows broad selectivity, good pharmacokinetic properties, and excellent in vivo activity.
AuthorsBernard R Neustadt, Jinsong Hao, Neil Lindo, William J Greenlee, Andrew W Stamford, Deen Tulshian, Ennio Ongini, John Hunter, Angela Monopoli, Rosalia Bertorelli, Carolyn Foster, Leyla Arik, Jean Lachowicz, Kwokei Ng, Kung-I Feng (Affiliation: Department of Chemical Research, , Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, NJ 07033, USA. bernard.neustadt at spcorp.com)
JournalBioorganic & medicinal chemistry letters (Bioorg Med Chem Lett) Vol. 17 Issue 5 Pg. 1376-80 (Mar 1 2007) ISSN: 0960-894X England
PMID17236762 (Publication Type: Journal Article)
Chemical References
  • Piperazines
  • Pyrimidines
  • Receptor, Adenosine A2A
  • piperazine
Topics
  • Administration, Oral
  • Animals
  • Catalepsy (chemically induced, drug therapy)
  • Disease Models, Animal
  • Parkinson Disease (drug therapy)
  • Piperazines (administration & dosage, chemical synthesis, pharmacokinetics)
  • Pyrimidines (administration & dosage, chemical synthesis, pharmacokinetics)
  • Rats
  • Receptor, Adenosine A2A (antagonists & inhibitors)
  • Structure-Activity Relationship
  • Substrate Specificity
  • Treatment Outcome