Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, IN 47907, USA.
Beilstein J Org Chem. 2012;8:1705-9. doi: 10.3762/bjoc.8.194. Epub 2012 Oct 8.
A strategy to replace the ethylamine side chain of 2,5-dimethoxy-4-iodoamphetamine (DOI, 1a), and 2,5-dimethoxy-4-bromoamphetamine (DOB, 1b) with a cyclopropylamine moiety was successful in leading to compounds with high affinity at the 5-HT(2) family of receptors; and the more potent stereoisomer of the cyclopropane analogues had the expected (-)-(1R,2S)-configuration. Screening for affinity at various serotonin receptor subtypes, however, revealed that the cyclopropane congeners also had increased affinity at several sites in addition to the 5-HT(2A) and 5-HT(2B) receptors. Therefore, at appropriate doses - although (-)-4 and (-)-5 may be useful as tools to probe 5-HT(2) receptor function - one would need to be mindful that their selectivity for 5-HT(2A) receptors is somewhat less than for DOI itself.
用环丙胺取代 2,5-二甲氧基-4-碘苯丙胺(DOI,1a)和 2,5-二甲氧基-4-溴苯丙胺(DOB,1b)中的乙胺侧链的策略是成功的,导致了对 5-HT(2)受体家族具有高亲和力的化合物;并且环丙烷类似物的更强立体异构体具有预期的(-)-(1R,2S)-构型。然而,在各种 5-羟色胺受体亚型上进行亲和力筛选时,发现除了 5-HT(2A)和 5-HT(2B)受体之外,环丙烷同系物在几个部位也具有更高的亲和力。因此,在适当的剂量下——尽管(-)-4 和(-)-5 可能可用作探测 5-HT(2)受体功能的工具——人们需要注意,它们对 5-HT(2A)受体的选择性略低于 DOI 本身。