Thieno[3,2-<i>b</i>]- and Thieno[2,3-<i>b</i>]pyrrole Bioisosteric Analogues of the Hallucinogen and Serotonin Agonist <i>N</i>,<i>N</i>-Dimethyltryptamine
作者:Joseph B. Blair、Danuta Marona-Lewicka、Arthi Kanthasamy、Virginia L. Lucaites、David L. Nelson、David E. Nichols
DOI:10.1021/jm980692q
日期:1999.3.1
The synthesis and biological activity of 6-[2-(N, N-dimethylamino)ethyl]-4H-thieno[3,2-b]pyrrole (3a) and 4-[2-(N, N-dimethylamino)ethyl]-6H-thieno[2,3-b]pyrrole (3b), thienopyrroles as potential bioisosteres of N,N-dimethyltryptamine (1a), are reported. Hallucinogen-like activity was evaluated in the two-lever drug discrimination paradigm using LSD- and DOI-trained rats. Neither 3a nor 3b substituted
6- [2-(N,N-二甲基氨基)乙基] -4H-噻吩并[3,2-b]吡咯(3a)和4- [2-(N,N-二甲基氨基)乙基]的合成及生物活性据报道,-6H-噻吩并[2,3-b]吡咯(3b)是潜在的N,N-二甲基色胺(1a)的生物异构体。在使用LSD和DOI训练的大鼠的两杆药物歧视范例中评估了致幻剂样活性。3a和3b都不能代替LSD或DOI达到50 micromol / kg的剂量。相比之下,在接受LSD训练的大鼠中1a被完全取代。然而,3a和3b完全取代了5-HT1A激动剂LY293284((-)-(4R)-6-乙酰基-4-(di-n-丙基氨基)-1,3,4,5-四氢苯并[c,d ]吲哚)。3a和3b均引起短暂的“ 5-羟色胺综合征”和流涎,这是5-HT1A受体激活的指示。在克隆的人5-HT2A受体3b具有约3a亲和力的两倍。但是,在克隆的人5-HT2B和5-HT2C受体上,3a的亲和力约