磺酰氟(SFs)最近已成为有希望的针对蛋白质的目标共价修饰的战斗部。尽管有许多成功地将SFs用作共价探针化合物的例子,但尚未出现对影响SFs稳定性和反应性的因素的详细探讨。在这项工作中,我们对空间和电子因素对SF和相关的S VI –F组的反应性和稳定性的影响进行了广泛的研究。尽管SF与N-乙酰半胱氨酸快速反应,但发现生成的加合物不稳定,因此SF不适合持久地共价抑制半胱氨酸残基。相反,SFs可以与N-乙酰酪氨酸和N一起提供稳定的加合物。-乙酰赖氨酸;此外,我们表明,可以通过调节弹头的电子特性来预测地调节芳基磺酰氟对这些亲核氨基酸的反应性。当共价反应发生在蛋白质结合口袋中时,这些趋势在很大程度上得以保留。我们还获得了描述ATP类似物5'- O -3-((氟磺酰基)苯甲酰基)腺苷(m-FSBA)。已证明高反应性战斗部在缓冲水溶液中的水解方面不稳定,这表明战斗部的反应性必须仔细调整以提供最佳的蛋白
SuFEx-enabled, agnostic discovery of covalent inhibitors of human neutrophil elastase
作者:Qinheng Zheng、Jordan L. Woehl、Seiya Kitamura、Diogo Santos-Martins、Christopher J. Smedley、Gencheng Li、Stefano Forli、John E. Moses、Dennis W. Wolan、K. Barry Sharpless
DOI:10.1073/pnas.1909972116
日期:2019.9.17
We report here a SuFEx-enabled, agnostic approach for the discovery and optimization of covalent inhibitors of human neutrophil elastase (hNE). Evaluation of our ever-growing collection of SuFExable compounds toward various biological assays unexpectedly revealed a selective and covalent hNE inhibitor: benzene-1,2-disulfonyl fluoride. Synthetic derivatization of the initial hit led to a more potent
a transition metal, is described using a novel partner in the Suzuki–Miyaura couplingreaction catalyzed by Pd(OAc)2 and Ruphos as ligands. The products showed good to outstanding yields and broad functional group compatibility under optimal conditions. The sequentialsynthesis of non-symmetric terphenyls and the gram grade process highlight the approach's synthetic utility. DFT calculations have shown
Synthesis of 18F‐labeled Aryl Trifluoromethyl Sulfones, ‐Sulfoxides, and ‐Sulfides for Positron Emission Tomography
作者:Lukas Veth、Albert D. Windhorst、Danielle J. Vugts
DOI:10.1002/anie.202404278
日期:——
The mild and high-yielding synthesis of 18F-labeled aryl trifluoromethyl sulfones, -sulfoxides, and -sulfides using [18F]Ruppert-Prakash reagent is described. The application to the radiolabeling of different bioactive compounds using >1 GBq of 18F-labeling reagent is demonstrated. This work expands the radiochemical space of [18F]CF3-containing structural motifs for the use in positron emission tomography
A study of the reactivity of S<sup>(VI)</sup>–F containing warheads with nucleophilic amino-acid side chains under physiological conditions
作者:H. Mukherjee、J. Debreczeni、J. Breed、S. Tentarelli、B. Aquila、J. E. Dowling、A. Whitty、N. P. Grimster
DOI:10.1039/c7ob02028g
日期:——
Despite numerous examples of the successful deployment of SFs as covalent probe compounds, a detailed exploration of the factors influencing the stability and reactivity of SFs has not yet appeared. In this work we present an extensive study on the influence of steric and electronic factors on the reactivity and stability of the SF and related SVI–F groups. While SFs react rapidly with N-acetylcysteine
磺酰氟(SFs)最近已成为有希望的针对蛋白质的目标共价修饰的战斗部。尽管有许多成功地将SFs用作共价探针化合物的例子,但尚未出现对影响SFs稳定性和反应性的因素的详细探讨。在这项工作中,我们对空间和电子因素对SF和相关的S VI –F组的反应性和稳定性的影响进行了广泛的研究。尽管SF与N-乙酰半胱氨酸快速反应,但发现生成的加合物不稳定,因此SF不适合持久地共价抑制半胱氨酸残基。相反,SFs可以与N-乙酰酪氨酸和N一起提供稳定的加合物。-乙酰赖氨酸;此外,我们表明,可以通过调节弹头的电子特性来预测地调节芳基磺酰氟对这些亲核氨基酸的反应性。当共价反应发生在蛋白质结合口袋中时,这些趋势在很大程度上得以保留。我们还获得了描述ATP类似物5'- O -3-((氟磺酰基)苯甲酰基)腺苷(m-FSBA)。已证明高反应性战斗部在缓冲水溶液中的水解方面不稳定,这表明战斗部的反应性必须仔细调整以提供最佳的蛋白
Direct C–H Sulfonylimination of Pyridinium Salts
作者:Lihua Luo、Juan Tang、Rui Sun、Wenjing Li、Xueli Zheng、Maoling Yuan、Ruixiang Li、Hua Chen、Haiyan Fu
DOI:10.1021/acs.orglett.2c00725
日期:2022.4.22
A direct pyridinium C–H sulfonylimination has been developed for the synthesis of sulfonyl iminopyridine derivatives with high efficiency. This transformation features the direct and efficient formation of a C═N bond with a high functional group tolerance under metal-free conditions. The spectroscopic properties potentially enable these sulfonyl iminopyridine compounds to be useful new emitting materials