Effect of the rigidification of propranolol, a mixed β-adrenoceptor and 5-HT1AR antagonist
作者:Franchini、Sorbi、Linciano、Brasili、Tait
DOI:10.1691/ph.2019.8878
日期:——
Propranolol is a popular β adrenergic antagonists that, together with pindolol, binds also to serotoninergic receptors, namely 5-HT1A/B. In this work the rigidification of the propranolol structure by locking its hydroxyl group within a 1,3-dioxolane ring was investigated. Constrained derivatives of propranolol were synthesized, fully characterized and tested for their affinity at β-adrenoreceptors and 5-HT1A/B/C receptors using radioligand binding assay. The constrained derivatives were inactive, as expected, at β1/2/3 adrenergic receptors. Although less expected, these derivatives failed to bind also to 5-HT1A/B/C receptors. The rigidification of propranolol is detrimental for 5-HT1AR activity.
普萘洛尔是一种常用的β肾上腺素能拮抗剂,它与吲哚洛尔一起也能与血清素能受体(即 5-HT1A/B)结合。这项研究通过将普萘洛尔结构中的羟基锁定在一个 1,3- 二氧戊环上,对其结构的刚性进行了研究。研究人员合成了普萘洛尔的受限衍生物,对其进行了全面表征,并利用放射性配体结合试验测试了它们与 β 肾上腺素受体和 5-HT1A/B/C 受体的亲和力。正如预期的那样,受约束的衍生物在 β1/2/3 肾上腺素受体上没有活性。这些衍生物也未能与 5-HT1A/B/C 受体结合,但这并不符合预期。普萘洛尔的僵化不利于 5-HT1AR 的活性。