A new series of heteroaromatic GBR 12935 [1-[2-(diphenylmethoxy)ethyl]-4-(3-phenylpropyl)-piperazine] (I) and GBR 12909 [1-[2-[bis(4-fluorophenyl)methoxy]ethyl]-4-(3-phenylpropyl)piperazine] (2) analogs was synthesized and evaluated as dopamine transporter (DAT) ligands. Analogs 5-16, in which the benzene ring in the phenylpropyl side chain of the GBR molecule had been replaced with a thiophene, furan, or pyridine ring, exhibited high affinity and selectivity for the DAT vs serotonin transporter (SERT) and stimulated locomotor activity in rats in a manner similar to the parent compound 2. In cocaine and food self-administration studies in rhesus monkeys, both thiophene-containing (6 and 8) and pyridine-containing (14 and 16) derivatives displayed potency comparable to 2 in decreasing the cocaine-maintained responding at the doses tested (0.8, 1.7, and 3 mg/kg). However, these compounds did not produce the degree of separation between food- and cocaine-maintained responding that was seen with 2. Among the bicyclic fused-ring congeners 17-38, the indole-containing analog of 2, 22, showed the greatest affinity for binding to the DAT, with IC50 = 0.7 nM, whereas the corresponding indole-containing derivative of 1, 21, displayed the highest selectivity (over 600-fold) at this site vs the SERT site.

中文翻译：

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1- [2-（二苯基甲氧基）乙基]-和1- [2- [双（4-氟苯基甲氧基）乙基] -4-（3-苯基丙基）哌嗪的杂芳族类似物（GBR 12935和GBR 12909）亲和性多巴胺再摄取抑制剂。

新系列的杂芳族GBR 12935 [1- [2-（二苯基甲氧基）乙基] -4-（3-苯丙基）-哌嗪]（I）和GBR 12909 [1- [2- [双[4-（4-氟苯基）甲氧基]]合成了乙基] -4-（3-苯基丙基）哌嗪]（2）类似物，并将其评估为多巴胺转运蛋白（DAT）配体。类似物5-16，其中GBR分子的苯丙基侧链中的苯环已被噻吩，呋喃或吡啶环取代，对DAT相对于血清素转运蛋白（SERT）表现出高亲和力和选择性，并刺激了自发活动在大鼠中的作用方式类似于母体化合物2。在可卡因和恒河猴的食物自给药研究中，含噻吩的（6和8）和含吡啶的（14和16）衍生物在降低剂量方面都显示出与2相当的效价。在测试剂量下可卡因维持的反应（0.8、1.7，和3 mg / kg）。但是，这些化合物并未产生食品和可卡因维持的响应之间的分离度，这种分离程度是在2中观察到的。在双环稠环同类物17-38中，含吲哚的类似物2，22显示出最大的亲和力与DAT的结合，IC50 = 0.7 nM，而相应的1,21含吲哚的衍生物在该位点相对于SERT位点显示出最高的选择性（超过600倍）。