2,6-Disubstituted 5-hydroxy-3(2H)-pyridazinone-4-carboxylic acid ethyl esters were synthesized from α-keto esters via an efficient three-step sequence including hydrazone formation, acylation with ethyl malonyl chloride, and subsequent Dieckmann cyclization.
[EN] AMINOPYRIDOPYRAZINONE DERIVATIVES FOR TREATING NEURODEGENERATIVE DISEASES<br/>[FR] DÉRIVÉS D'AMINOPYRIDOPYRAZINONE POUR LE TRAITEMENT DE MALADIES NEURODÉGÉNÉRATIVES
申请人:LIGAND PHARM INC
公开号:WO2010008775A1
公开(公告)日:2010-01-21
Aminopyridopyrazinone derivatives useful in treating disorders that are mediated by adenosine receptor function, including neurodegenerative diseases and inflammation, are disclosed. Pharmaceutical compositions, methods of treatment and use, involving the disclosed compounds, are also disclosed.
Compounds of formula (I)
1
in which R
2
, X, Y, Cy, L and Lp(D)
n
have the meanings given in the specification, are inhibitors of the serine protease, Factor Xa and are useful in the treatment of cardiovascular disorders.
Compounds of formula (I) in which R
2
, X, Y, Cy, L and Lp(D)
n
have the meanings given in the specification, are inhibitors of the serine protease, Factor Xa and are useful in the treatment of cardiovascular disorders.
1