Substituted indoles have been condensed with N-benzyl-4-piperidone to give 3-(1-benzyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-indoles. Under basic conditions, 5-, 6-, and 7- (but not 4-) substituted indoles give reasonable yields of the product. For condensation with 4-substituted indoles, acidic conditions and the presence of at least a 3-fold excess of N-benzyl-4-piperidone are beneficial. Under basic
Multitarget Derivatives of D2AAK1 as Potential Antipsychotics: The Effect of Substitution in the Indole Moiety
作者:Magda Kondej、Tomasz M. Wróbel、Katarzyna M. Targowska‐Duda、Antón Leandro Martínez、Oliwia Koszła、Piotr Stępnicki、Agata Zięba、Alba Paz、Olga Wronikowska‐Denysiuk、Maria I. Loza、Marián Castro、Agnieszka A. Kaczor
DOI:10.1002/cmdc.202200238
日期:2022.8.3
17 derivatives of the virtual hit D2AAK1 were designed, synthesized and evaluated for their affinity for D2, 5-HT1A and 5-HT2A receptors. Two multitarget compounds were chosen for in vivo studies, and their antipsychotic activity was evaluated in rodents. Structure-activity relationship analysis revealed that substitutions at positions C4 and C5 of the indolemoiety were most favourable for the multi-receptor
Substituted Pentacyclic Carbazolones as Novel Muscarinic Allosteric Agents: Synthesis and Structure−Affinity and Cooperativity Relationships
作者:Parviz Gharagozloo、Sebastian Lazareno、Masao Miyauchi、Angela Popham、Nigel J. M. Birdsall
DOI:10.1021/jm010946z
日期:2002.3.1
Two series of pentacyclic carbazolones, 22 and 23, have been synthesized utilizing a facile intramolecular Diels-Alder reaction and are allosteric modulators at muscarinic acetylcholine receptors. Their affinities and cooperativities with acetylcholine and the antagonist N-methylscopolamine (NMS) at M-1-M-4 receptors have been analyzed and compared. All of the synthesized compounds are negatively cooperative with acetylcholine. In contrast, the majority of the compounds exhibit positive cooperativity with NMS, particularly at M-2 and M-4 receptors. The subtype selectivity, in terms of affinity, was in general M-2 > M-1 > M-4 > M-3. The largest increases in affinity produced by a single substitution of the core structure were given by the 1-OMe (22b) and 1-Cl (22d) derivatives. The position of the N in the ring did not appear to be important for binding affinity or cooperativity. Two compounds 22y and 23i, both trisubstituted analogues, were the most potent compounds synthesized, with dissociation constants of 30-100 nM for the M-2 NMS-liganded and unliganded receptor, respectively. The results indicate that the allosteric site, like the primary binding site, is capable of high-affinity interactions with molecules of relatively low molecular weight.