Novel 1-(azacyclyl)-3-arylsulfonyl-1H-pyrrolo[2,3-b]pyridines as 5-HT6 agonists and antagonists
作者:Hassan Elokdah、David Li、Geraldine McFarlane、Ronald C. Bernotas、Albert J. Robichaud、Ronald L. Magolda、Guo Ming Zhang、Deborah Smith、Lee E. Schechter
DOI:10.1016/j.bmc.2007.06.024
日期:2007.9
additional nitrogen in the indole ring provides 1-aminoethyl-3-arylsulfonyl-1H-pyrrolo[2,3-b]pyridines 2 with both enhanced 5-HT(6) affinity and cyclase activity, many acting as 5-HT(6) agonists. We constrained the basic side chain as part of a ring to make 1-(azacyclyl)-3-arylsulfonyl-1H-pyrrolo[2,3-b]pyridines incorporating a pyrrolidinyl 3 or piperidinyl 4 ring system. Preparation of compounds 3 and
1-Aminoethyl-3-arylsulfonyl-1H-吲哚1是5-HT(6)受体配体,在5-HT(6)环化酶测定中具有适度的活性。在吲哚环中引入额外的氮可提供具有增强的5-HT(6)亲和力和环化酶活性的1-氨乙基-3-芳基磺酰基-1H-吡咯并[2,3-b]吡啶2,其中许多可作为5-HT (6)激动剂。我们将基本侧链限制为环的一部分,以使1-(氮杂环基)-3-芳基磺酰基-1H-吡咯并[2,3-b]吡啶并入吡咯烷基3或哌啶基4环系统。化合物3和4的制备需要合成关键中间体1-(吡咯烷-3-基)-1H-吡咯并[2,3-b]吡啶7和1-(哌啶-3-基)-1H-吡咯并[ 2,3-b]吡啶8。中间体7通过7-氮杂吲哚的烷基化制备,而中间体8需要交替合成。显示系列3和4的化合物对5-HT(6)受体具有高结合亲和力。在5-HT(6)受体的体外功能活性取决于各种功能,包括芳基磺酰基的选择,芳基磺酰基的