Structure activity relationships of 5-HT2B and 5-HT2C serotonin receptor antagonists: N6, C2 and 5′-Modified (N)-methanocarba-adenosine derivatives
作者:Dilip K. Tosh、Maggie M. Calkins、Marko S. Ivancich、Hailey A. Bock、Ryan G. Campbell、Sarah A. Lewicki、Eric Chen、Zhan-Guo Gao、John D. McCorvy、Kenneth A. Jacobson
DOI:10.1016/j.ejmech.2023.115691
日期:2023.11
(N)-Methanocarba adenosine derivatives were structurally modified to target 5-HT2B serotonin receptors as antagonists, predominantly containing branched N6-alkyl groups. N6-Dicycloalkyl-methyl groups, including their asymmetric variations, as well as 2-iodo, were found to generally favor 5-HT2Rs, while only N6-dicyclohexyl-methyl derivative 35 showed weak 5-HT2AR affinity (Ki 3.6 μM). The highest 5-HT2BR
(N)-甲烷氨基甲酸腺苷衍生物在结构上被修饰为靶向 5-HT2B 5-羟色胺受体作为拮抗剂,主要包含支链 N6-烷基。发现 N6-二环烷基甲基,包括它们的不对称变体,以及 2-碘,通常有利于 5-HT2Rs,而只有 N6-二环己基甲基衍生物 35 表现出弱的 5-HT2AR 亲和力 (K 3.6 μM)。最高的 5-HT2BR 亲和力为 K 11-23 nM(N6-二环丙基-甲基-2-碘 11,2-氯-5′-脱氧-5′-甲基硫代 15 和 N6-((R)-环丁基-环丙基-甲基)-2-碘 43)和 K 73 nM,在 5-HT2CR 下为 36。腺嘌呤核苷及其相应的刚性 (N)-甲烷氨基甲酸酯衍生物的直接比较 (参见 51 和 MRS8099 45) 表明与双环系统的多倍亲和力增强。化合物 43、45 和 48 在 Gq 介导的钙通量测定中是功能性 5-HT2BR (KB 2–3 nM) 和