(+)-Laburnamine, a Natural Selective Ligand and Partial Agonist for the α4β2 Nicotinic Receptor Subtype
作者:Bruno Tasso、Federica Novelli、Fabio Sparatore、Francesca Fasoli、Cecilia Gotti
DOI:10.1021/np3007028
日期:2013.4.26
(+)-Laburnamine (1), a rare alkaloid extracted from Laburnum anagyroides seeds (∼4 mg from 1 kg), was shown to bind with high affinity (Ki, 293 nM) to the α4β2 nicotinic receptor subtype, which is, respectively, 126 and 136 times higher than to the α3β4 (Ki 37 μM) and α7 subtypes (Ki 40 μM). When its ability to release [3H]-dopamine from striatal slices was tested in a functional assay, compound 1
(+) - Laburnamine(1),从提取的罕见生物碱毒豆种子(约为4毫克来自1千克)中,示出以高亲和力结合(ķ我,293纳米)到α4β2烟碱样受体亚型,其为,分别比α3β4(K i 37μM )和α7亚型(K i 40μM)高126倍和136倍。在功能分析中测试了其从纹状体切片中释放[ 3 H]-多巴胺的能力时,化合物1表现为部分激动剂,EC 50为5.8μM,E max为尼古丁的43%。在同一试验中与尼古丁一起孵育时,1 阻止达到最大的效果。