Discovery of New Chemical Entities for Old Targets: Insights on the Lead Optimization of Chromone-Based Monoamine Oxidase B (MAO-B) Inhibitors
作者:Joana Reis、Fernando Cagide、Daniel Chavarria、Tiago Silva、Carlos Fernandes、Alexandra Gaspar、Eugenio Uriarte、Fernando Remião、Stefano Alcaro、Francesco Ortuso、Fernanda Borges
DOI:10.1021/acs.jmedchem.6b00527
日期:2016.6.23
The discovery of new chemical entities endowed with potent, selective and reversible monoamine oxidase-B inhibitory activity is a clinically relevant subject. Therefore, a small library of chromone derivatives was synthesized and screened towards human monoamine oxidase isoforms (hMAO-A and hMAO-B). The structure-activity relationships studies strengthen the importance of the amide spacer and the direct
具有有效的,选择性的和可逆的单胺氧化酶-B抑制活性的新化学实体的发现是临床相关主题。因此,合成了一个很小的色酮衍生物文库,并针对人单胺氧化酶同工型(hMAO-A和hMAO-B)进行了筛选。构效关系的研究加强了酰胺间隔基的重要性,以及羰基与γ-吡喃酮环的直接连接以及环外环中间位和对位取代基的存在。最有效的MAO-B抑制剂是N-(3'-氯苯基)-4-氧代-4H-色烯-3-羧酰胺(20)(IC50 = 403 pM)和N-(3',4'-二甲基苯基)- 4-氧代-4H-色烯-3-羧酰胺(27)(IC50 = 669 pM),分别作为竞争性和非竞争性可逆抑制剂。计算对接研究提供了对酶-抑制剂相互作用的见解,并为观察到的选择性和效力提供了理论依据。化合物27因其良好的毒理学特性和理化特性而脱颖而出,该特性指向血脑屏障通透性,因此是随后进行动物研究的有效候选物。