Monocyclic Nitro-heteroaryl Nitrones with Dual Mechanism of Activation: Synthesis and Antileishmanial Activity
作者:Juliana da Silva Pacheco、Débora de Souza Costa、Edézio Ferreira Cunha-Júnior、Valter Viana Andrade-Neto、Alan H. Fairlamb、Susan Wyllie、Marília O. F. Goulart、Danyelle C. Santos、Thaissa L. Silva、Marina A. Alves、Paulo R. R. Costa、Ayres G. Dias、Eduardo Caio Torres-Santos
DOI:10.1021/acsmedchemlett.1c00193
日期:2021.9.9
shows that 1a,b are activated by both, which could slow the development of resistance. Their redox potential (Eredox) obtained by cyclic voltammetry (−0.67 and −0.62 V) shows that the reduction of the nitro group is modulated by the nitrone group. Oral administration of 1b to mice infected by L. infantum reduced the parasite load on the spleen by 76.6 and 95.0% with doses of 50 and 100 mg/kg, respectively
5-硝基-呋喃硝酮( 1 )和5-硝基-噻吩硝酮( 2 )在一个步骤中合成。化合物1a - c对Leishmania amazonensis和L. infantum 的细胞内无鞭毛体形式具有最有效的利什曼杀灭活性(从 0.019 到 2.76 μM),具有出色的选择性(从 39 到 5673)。野生型多诺氏乳杆菌前鞭毛体与过表达硝基还原酶 NRT1 或 NRT2的前鞭毛体中的利什曼杀灭活性的比较表明1a和b都被两者激活,这可以减缓耐药性的发展。它们的氧化还原电位(E氧化还原)通过循环伏安法(-0.67 和-0.62 V)获得,表明硝基的还原受硝酮基团的调节。对感染婴儿乳杆菌的小鼠口服1b可将脾脏上的寄生虫负荷降低 76.6% 和 95.0%,剂量分别为 50 和 100 mg/kg,每天两次,持续 5 天。在肝脏中,任一治疗的寄生虫负荷抑制均高于 75%。