Structure−Selectivity Investigations of D2-Like Receptor Ligands by CoMFA and CoMSIA Guiding the Discovery of D3 Selective PET Radioligands
摘要:
Elucidation of the physiological role of the D-3 receptor and its distribution in the brain using positron emission tomography (PET) is hampered by the lack of bioavailable subtype selective tracer ligands. To develop appropriate D-3 radioligands, we designed an integrative procedure involving the elucidation of structural features determining D-3 selectivity over both congeners D-2 and D-4 by comparative molecular analysis. Thus, we have successfully generated CoMFA and CoMSIA models based on the affinitiy differences of a series of 79 ligands representing a broad range of selectivities. These models yielded highly significant cross-validations (q(cv)(2)(D-3/D-2) = 0.86; q(cv)(2)(D-3/D-4) = 0.92) and excellent predictions of a 16-ligand test set (r(pred)(2) = 0.79-0.93). Exploiting this information, synthesis and receptor binding studies directed us to the fluorinated lead compounds 78 and 79, featuring subnanomolar D-3 affinities and considerable selectivities over D-2 and D-4 and, subsequently, to the subtype selective PET tracers [F-18]78 and [F-18]79.
Compounds with antiplatelet aggregation characteristics for the treatment of cardiovascular and cardiovascular related disease, are described. The methods are directed to administering pharmaceutical compositions comprising a pyridoxine analogue.
Compounds with antiplatelet aggregation characteristics for the treatment of cardiovascular and cardiovascular related disease, are described. The methods are directed to administering pharmaceutical compositions comprising a pyridoxine analogue.
[EN] SUBSTITUTED PYRIDOXINES AS ANTI-PLATELET AGENTS<br/>[FR] PYRIDOXINES SUBSTITUEES COMME AGENTS ANTIPLAQUETTAIRES
申请人:MEDICURE INT INC
公开号:WO2006045203A1
公开(公告)日:2006-05-04
[EN] Compounds with antiplatelet aggregation characteristics for the treatment of cardiovascular and cardiovascular related disease, are described. The methods are directed to administering pharmaceutical compositions comprising a pyridoxine analogue. [FR] L'invention concerne des composés à caractéristiques d'agrégation antiplaquettaires pour le traitement de maladies cardiovasculaires et de maladies associées à ces dernières. Cette invention concerne également des méthodes consistant à administrer des compositions pharmaceutiques comprenant un analogue de la pyridoxine.