Category: pyrrolines. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4-Methoxypiperidine, is researched, Molecular C6H13NO, CAS is 4045-24-3, about Design, synthesis and biological evaluation of Tozadenant analogues as adenosine A2A receptor ligands. Author is Renk, Dana R.; Skraban, Marcel; Bier, Dirk; Schulze, Annette; Wabbals, Erika; Wedekind, Franziska; Neumaier, Felix; Neumaier, Bernd; Holschbach, Marcus.
With the aim to obtain potent adenosine A2A receptor (A2AR) ligands, a series of eighteen derivatives of 4-hydroxy-N-(4-methoxy-7-morpholin-4-yl-1,3-benzo[d]thiazol-2-yl)-4-methylpiperidine-1-carboxamide were designed and synthesized. The target compounds were obtained by a chem. building block principle that involved reaction of the appropriate aminobenzothiazole Ph carbamates with either com. available or readily synthesized functionalized piperidines. Ki values for human A2AR ranged from 2.4 to 38 nM, with more than 120-fold selectivity over A1 receptors for all evaluated compounds except 4-Fluoro-4-(hydroxymethyl)-N-(4-methoxy-7-morpholinobenzo[d]thiazol-2-yl)piperidine-1-carboxamide which had a Ki of 361 nM and 18-fold selectivity. The most potent fluorine-containing derivatives exhibited Ki values of 4.9 nM, 3.6 nM and 2.8 nM for the human A2AR. Interestingly, the corresponding values for rat A2AR were found to be four to five times higher. Their binding to A2AR was further confirmed by radiolabeling with 18F and in vitro autoradiog. in rat brain slices, which showed almost exclusive striatal binding and complete displacement by the A2AR antagonist ZM 241385. Authors conclude that these compounds represent potential candidates for the visualization of the A2A receptor and open pathways to novel therapeutic treatments of neurodegenerative disorders or cancer.
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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem