Identification of novel quinazolinedione derivatives as RORγt inverse agonist
摘要:
Novel small molecules were synthesized and evaluated as retinoic acid receptor-related orphan receptor-gamma t (ROR gamma t) inverse agonists for the treatment of inflammatory and autoimmune diseases. A hit compound, 1, was discovered by high-throughput screening of our compound library. The structure-activity relationship (SAR) study of compound 1 showed that the introduction of a chlorine group at the 3-position of 4-cyanophenyl moiety increased the potency and a 3-methylpentane-1,5-diamide linker is favorable for the activity. The carbazole moiety of 1 was also optimized; a quinazolinedione derivative 18i suppressed the increase of IL-17A mRNA level in the lymph node of a rat model of experimental autoimmune encephalomyelitis (EAE) upon oral administration. These results indicate that the novel quinazolinedione derivatives have great potential as orally available small-molecule ROR gamma t inverse agonists for the treatment of Th17-driven autoimmune diseases. A U-shaped bioactive conformation of this chemotype with ROR gamma t protein was also observed. (C) 2017 Elsevier Ltd. All rights reserved.
Photocatalytic coupling of electron-deficient alkenes using oxalic acid as a traceless linchpin
作者:Zugen Wu、Mingyue Wu、Kun Zhu、Jie Wu、Yixin Lu
DOI:10.1016/j.chempr.2022.12.013
日期:2023.1
Reductive alkene cross-coupling represents a straightforward strategy for the construction of C–C bonds from readily available alkene feedstocks. A one-pot protocol, utilizing oxalic acid as a traceless linchpin, has been developed to achieve direct cross-coupling of electron-deficient alkenes. The overall process is a two-step transformation involving hydrocarboxylation followed by decarboxylative
还原性烯烃交叉偶联代表了从现成的烯烃原料构建 C-C 键的直接策略。已经开发出一种利用草酸作为无痕关键的一锅法来实现缺电子烯烃的直接交叉偶联。整个过程是一个两步转化,涉及加氢羧化,然后是脱羧交叉偶联。双光催化剂系统对于成功至关重要,并协同促进两个反应步骤。该反应支持生物活性分子的有效合成。光氧化还原催化为 CO 2的生成提供了一种简单而温和的途径从草酸中分离出自由基阴离子,这为这种活性中间体在精细化学品合成中的广泛应用铺平了道路。
Bogert; Wise, Journal of the American Chemical Society, 1912, vol. 34, p. 701