Synthesis and Structure−Activity Relationships of 3,7-Dimethyl-1-propargylxanthine Derivatives, A2A-Selective Adenosine Receptor Antagonists
摘要:
A series of 8-substituted derivatives of 3,7-dimethyl-1-propargylxanthine (DMPX) was synthesized and investigated as A(2A) adenosine receptor antagonists. Different synthetic strategies for the preparation of DMPX derivatives and analogues were explored. A recently developed synthetic procedure starting from 3-propargyl-5,6-diaminouracil proved to be the method of choice for the preparation of this type of xanthine derivatives. The novel compounds were investigated in radioligand binding studies at the high-affinity adenosine receptor subtypes A(1) and A(2A) and compared with standard A(2A) adenosine receptor antagonists. Structure-activity relationships were analyzed in detail. 8-Styryl-substituted DMPX derivatives were identified that exhibit high affinity and selectivity for A(2A) adenosine receptors, including 8-(m-chlorostyryl)-DMPX (CS-DMPX, K-i A(2A) = 13 nM, 100-fold selective), 8-(m-bromostyryl)-DMPX (BS-DMPX, K-i A(2A) = 8 nM, 146-fold selective), and 8-(3,4-dimethoxystyryl)-DMPX (K-i A(2A) = 15 nM, 167-fold selective). These and other novel compounds are superior to the standard A(2A) adenosine receptor antagonists KF17837 (4) and CSC (5) with respect to A(2A) affinity and/or selectivity.
Synthesis of paraxanthine analogs (1,7-disubstituted xanthines) and other xanthines unsubstituted at the 3-position: structure-activity relationships at adenosine receptors
作者:Christa E. Mueller、Dan Shi、Malcolm Manning、John W. Daly
DOI:10.1021/jm00074a015
日期:1993.10
paraxanthine analogs (1,7-disubstituted xanthines) and 1,8-disubstituted xanthines, were developed. Silylation of 1-substituted xanthines followed by alkylation at the 7-position provides a facile route to paraxanthine analogs. Regioselective alkylation of tris(trimethylsilyl)-6-aminouracil provides 3-substituted 6-aminouracils, which are converted to 1,8-disubstituted xanthines by standard procedures
Disclosed are novel compounds of the general formula (Ia), and pharmaceutically acceptable salts, isomers, diastereomers or enantiomers thereof
and their use as medicines, for example in the treatment of dopamine-related movement disorders.
[EN] 8-ETHINYLXANTHINE DERIVATIVES AS SELECTIVE A2A RECEPTOR ANTAGONISTS<br/>[FR] DÉRIVÉS 8-ÉTHYNYLXANTHINE EN TANT QU'ANTAGONISTES SÉLECTIFS DU RÉCEPTEUR 2A
申请人:SANOL ARZNEI SCHWARZ GMBH
公开号:WO2008077557A1
公开(公告)日:2008-07-03
[EN] Disclosed are novel compounds of the general formula (Ia), and pharmaceutically acceptable salts, isomers, diastereomers or enantiomers thereof (Ia) and their use as medicines, for example in the treatment of dopamine-related movement disorders. [FR] La présente invention concerne de nouveaux composés de formule générale (Ia), et leurs sels, isomères, diastéréomères ou enantiomères pharmaceutiquement acceptables ainsi que leur utilisation en tant que médicaments, par exemple dans le traitement de troubles du mouvement liés à la dopamine.