新型的革兰氏阴性抗生素具有抗多药耐药性感染的活性,是亟待解决的问题。作为脂蛋白生物合成途径的重要组成部分,脂蛋白信号肽酶II(LspA)是抗菌药物发现的诱人靶标,天然产物抑制剂球蛋白提供了适度活性的起点。通知基于结构的设计,对球霉素depsipeptide进行了优化,以提高针对大肠杆菌的活性。骨干修饰以及理化性质的调节提供了具有良好体内药代动力学特征的有效化合物。优化的化合物,例如51(E. coli MIC 3.1μM)和61 (E. coli MIC 0.78μM)表现出针对革兰氏阴性病原体的广谱活性,并可能为将来的抗生素发现提供机会。
新型的革兰氏阴性抗生素具有抗多药耐药性感染的活性,是亟待解决的问题。作为脂蛋白生物合成途径的重要组成部分,脂蛋白信号肽酶II(LspA)是抗菌药物发现的诱人靶标,天然产物抑制剂球蛋白提供了适度活性的起点。通知基于结构的设计,对球霉素depsipeptide进行了优化,以提高针对大肠杆菌的活性。骨干修饰以及理化性质的调节提供了具有良好体内药代动力学特征的有效化合物。优化的化合物,例如51(E. coli MIC 3.1μM)和61 (E. coli MIC 0.78μM)表现出针对革兰氏阴性病原体的广谱活性,并可能为将来的抗生素发现提供机会。
Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of lipoprotein signal peptidase II (LspA), a key protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.
C−H Activation of Unbiased C(sp<sup>3</sup>)−H Bonds: Gold(I)‐Catalyzed Cycloisomerization of 1‐Bromoalkynes**
作者:Rubén Miguélez、Nina Semleit、Carlos Rodríguez‐Arias、Pavel Mykhailiuk、José M. González、Gebhard Haberhauer、Pablo Barrio
DOI:10.1002/anie.202305296
日期:2023.6.26
A gold-catalyzed intramolecular insertion reaction of strictly unactivated C(sp3)−H bonds is described. The reaction uses readily available starting materials and benefits from extremely simple reaction conditions. A library of structurally diverse scaffolds bearing a C(sp2)−Br bond has been obtained. In addition, an original reaction pathway in gold catalysis involving a concerted insertion on a gold-stabilized
Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of lipoprotein signal peptidase II (LspA), a key protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.