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-HT2 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-HT2A and 5-HT2B receptors. Therefore, at appropriate doses – although (−)-4 and (−)-5 may be useful as tools to probe 5-HT2 receptor function – one would need to be mindful that their selectivity for 5-HT2A receptors is somewhat less than for DOI itself.
一种替代2,5-二甲氧基-4-碘安非他明(DOI,1a)和2,5-二甲氧基-4-溴安非他明(DOB,1b)的乙胺侧链的策略成功地导致具有高亲和力的化合物在5-HT2家族受体上;环丙胺类似物的更有效立体异构体具有预期的(-)-(1R,2S)-构型。然而,在筛选各种5-羟色胺受体亲和力时,发现环丙烷类似物也在5-HT2A和5-HT2B受体以外的几个位点具有增加的亲和力。因此,在适当剂量下 - 尽管(-)-4和(-)-5可能作为探测5-HT2受体功能的工具 - 人们需要注意它们对5-HT2A受体的选择性略低于DOI本身。