کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1396034 1501170 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New spirocyclic Δ2-isoxazoline derivatives related to selective agonists of α7 neuronal nicotinic acetylcholine receptors
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
New spirocyclic Δ2-isoxazoline derivatives related to selective agonists of α7 neuronal nicotinic acetylcholine receptors
چکیده انگلیسی

A set of structural analogues of spirocyclic quinuclidinyl-Δ2-isoxazolines, characterized as potent and selective α7 nicotinic agonists, was prepared and assayed for binding affinity at α7 and α4β2 neuronal nicotinic acetylcholine receptors (nAChRs). The investigated derivatives (3a–3c, 4a–4c, 5a–5c, 6a–6c, and 7a–7c), synthesized via the 1,3-dipolar cycloaddition of nitrile oxides to suitable dipolarophiles, showed an overall reduced affinity at the α7 subtype when compared with their model compounds. Solely Δ2-isoxazolines 3a, 3b, and 6c maintained a binding affinity in the nanomolar range at the α7 nAChRs (Ki = 230, 420 and 700 nM, respectively). The quaternary ammonium salt 6c retained also a noteworthy α7 vs. α4β2 subtype selectivity, whereas 3a and 3b showed a sharp reduction in selectivity compared with 1a and 1b, their quinuclidinyl higher homologues.

Figure optionsDownload as PowerPoint slideHighlights
► Synthesis of spirocyclic Δ2-isoxazoline derivatives as α7 nAChR ligands.
► Binding studies towards α7, α4β2 and α3β4 nAChR subtypes.
►  Δ2isoxazolines 3a, 3b, and 6c exhibited significant α7 nAChR binding affinity in the nanomolar range.
► Conformational analysis and theoretical assessment of SAR by docking in a model of the α7 nAChR.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Medicinal Chemistry - Volume 46, Issue 12, December 2011, Pages 5790–5799
نویسندگان
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