由于抗性的发展,总是需要新的杀虫靶标。的Hex1,一个β- Ñ乙酰基d氨基己糖苷酶在识别亚洲玉米螟(亚洲玉米螟),是参与昆虫几丁质分解代谢并已证明对于杀虫剂发展的理想靶标。在这项研究中,基于结构的虚拟筛选,结构简化,和生物学评价用于显示与联苯磺酰胺骨架有很大的潜力作为化合物中Hex1抑制剂。具体而言,化合物10k、10u和10v具有K i值分别为 4.30、3.72 和 4.56 μM,因此,它们比一些报道的非糖基抑制剂更有效,例如粘液素 B 1 ( K i = 26 μM)、小檗碱 ( K i = 12 μM)、2 ( K i = 11.2 μM),和3 ( K i= 28.9 微米)。此外,抑制动力学评估表明,目标化合物在底物方面是竞争性抑制剂,并且基于毒性预测,它们中的大多数具有有效的药物特性。所得结果表明,联苯磺酰胺骨架具有化学结构简单、合成易处理、活性强、毒性低等特点,在以Hex1
A novel one-step direct reductive coupling reaction between nitroarenes and sodium arylsulfinates was realized in the presence of an inexpensive Pd/C catalyst. In this procedure, readily available nitroarenes are employed as the nitrogen sources, and sodium arylsulfinates serve as both coupling partners and reductants. The method features high efficiency by using cheap Pd/C with low catalyst loading
Direct Reaction of Nitroarenes and Thiols via Photodriven Oxygen Atom Transfer for Access to Sulfonamides
作者:Zhaowei Bao、Juan Zou、Chengli Mou、Zhichao Jin、Shi-Chao Ren、Yonggui Robin Chi
DOI:10.1021/acs.orglett.2c03770
日期:2022.12.9
a novel strategy that directly couples nitro compounds and thiols to form sulfonamides atom- and redox-economically. Mechanistic studies suggest our reaction proceeds via direct photoexcitation of nitroarenes that eventually transfers the oxygenatoms from the nitro group to the thiol unit.