Synthesis and structure–activity relationship of novel conformationally restricted analogues of serotonin as 5-HT6 receptor ligands
摘要:
5-Hydroxytryptamine 6 receptors (5-HT6R) are being perceived as the possible target for treatment of cognitive disorders as well as obesity. The present article deals with the design, synthesis, in vitro binding and structure-activity relationship of a novel series of tetracyclic tryptamines with the rigidized N-arylsulphonyl, N-arylcarbonyl and N-benzyl substituents as 5-HT6 receptor ligands. The chiral sulphonyl derivatives 15a and 17a showed high affinity at 5-HT6R with the K-i of 23.4 and 20.5 nM, respectively. The lead compound from the series 15a has acceptable ADME properties, adequate brain penetration and is active in animal models of cognition like Novel Object Recognition Task (NORT) and water maze.
The Serotonin 5-HT4 Receptor. 2. Structure-Activity Studies of the Indole Carbazimidamide Class of Agonists
摘要:
A number of substituted indole carbazimidamides were prepared and evaluated as 5-HT4 receptor agonists by using the isolated field-stimulated guinea pig ileum preparation. Their selectivity for the 5-HT4 receptor was established by examining their affinity for other 5-HT receptors using radioligand-binding techniques. Several selective and highly potent full as well as partial agonists emerged from this study. For example, 1b,d were found to be the most potent, full 5-HT4 receptor agonists described so far (EC(50) = 0.5 and 0.8 nM, respectively), being 6 and 4 times more potent than serotonin itself. On the other hand, 5b and 1h appeared as partial 5-HT4 receptor agonists in the nonstimulated guinea pig ileum preparation with potencies, evaluated against serotonin action, respectively similar (5b, K-i = 12 nM) to and 300-fold higher (1h, K-i = 0.04 nM) than serotonin.
Compounds are described that are active on PPARs, including pan-active compounds and compounds selective for any one or any two of PPARα, PPARα and PPARδ. Also described are methods of use of the compounds in treating various diseases.
[EN] PPAR ACTIVE COMPOUNDS<br/>[FR] COMPOSES ACTIFS SUR LES PPAR
申请人:PLEXXIKON INC
公开号:WO2007030559A2
公开(公告)日:2007-03-15
[EN] Compounds are described that are active on PPARs, including pan-active compounds and compounds selective for any one or any two of PPARa, PPAR? and PPARd. Also described are methods of use of the compounds in treating various diseases. [FR] L'invention concerne des composés qui sont actifs sur les PPAR, y compris les composés ayant une activité sur pan et des composés sélectifs pour un ou deux quelconques de PPARa, PPAR? et PPARd. L'invention concerne également des procédés d'utilisation de ces composés dans le traitement de diverses maladies.
Subtle Structural Changes across the Boundary between A2AR/A2BR Dual Antagonism and A2BR Antagonism: A Novel Class of 2-Aminopyrimidine-Based Derivatives