Bivalent ligand approach on N-{2-[(3-methoxyphenyl)methylamino]ethyl}acetamide: Synthesis, binding affinity and intrinsic activity for MT1 and MT2 melatonin receptors
作者:Gilberto Spadoni、Annalida Bedini、Pierfrancesco Orlando、Simone Lucarini、Giorgio Tarzia、Marco Mor、Silvia Rivara、Valeria Lucini、Marilou Pannacci、Francesco Scaglione
DOI:10.1016/j.bmc.2011.06.063
日期:2011.8
intrinsic activity at MT1 and MT2 melatonin receptors of new dimeric melatonin receptor ligands in which two units of the monomeric agonist N-2-[(3-methoxyphenyl)methylamino]ethyl}acetamide (1) are linked together through different anchor points. Dimerization of compound 1 through the methoxy substituent leads to a substantial improvement in selectivity for the MT1 receptor, and to a partial agonist behavior
我们报告了新的二聚褪黑素受体配体的MT 1和MT 2褪黑素受体的合成,结合特性和固有活性,其中两个单位的单体激动剂N- 2-[(3-甲氧基苯基)甲基氨基]乙基}乙酰胺(1)通过不同的定位点链接在一起。化合物1通过甲氧基取代基的二聚导致对MT 1受体的选择性大大改善,并导致部分激动剂行为。具有三亚甲基接头的化合物3a对MT 1亚型具有最高的选择性(112倍的选择性),而化合物3d具有最高的选择性。以六亚甲基间隔基为特征的H 2 O,具有最高的MT 1结合亲和力(p K iMT1 = 8.47)和54倍的MT 1选择性。通过二聚化的苯胺氮1废除MT 1和选择性,导致化合物与任一完全激动剂或取决于接头的性质的拮抗剂的行为。