Microwave assisted synthesis of spirocyclic pyrrolidines – σ1 receptor ligands with modified benzene-N-distance
作者:Annemarie Jasper、Dirk Schepmann、Kirstin Lehmkuhl、Jose Miguel Vela、Helmut Buschmann、Jörg Holenz、Bernhard Wünsch
DOI:10.1016/j.ejmech.2012.04.018
日期:2012.7
Two series of σ1 ligands with a spiro[[2]benzopyran-1,3′-pyrrolidine] (3) and a spiro[[2]benzofuran-1,3′-pyrrolidine] (4) framework were synthesized and pharmacologically evaluated. Several reaction steps were considerably improved by microwave irradiation. The σ1 affinity of the spirocyclic ligands correlates nicely with the benzene-N-distance, i.e. 2 < 3 < 4 < 1. The σ1 affinity of both compound
两个系列的σ 1点的配体与一个螺[[2]苯并吡喃-1,3'-吡咯烷](3)和螺[[2]苯并呋喃-1,3'-吡咯烷](4)框架的合成和药理学评价。微波辐射大大改善了几个反应步骤。所述σ 1螺环配体相关因素很好地与苯亲和力Ñ -distance,即2 < 3 < 4 < 1。所述σ 1既化合物类的亲和力可以用大而增加ñ -取代基(例如2-苯乙基,辛基)。尽管如此,苄基衍生物图4a代表了最有希望的σ 1个配体(ķ我 = 25 nM)的,由于其对高选择性σ 2亚型(> 40倍),NMDA受体和5-HT 6和5-HT 7个受体。此外,4a不会抑制心脏中的hERG通道。