The present invention relates to new benzo[1,2,3]thiadiazine-1,1-dioxide derivatives of the general Formula (I), medicaments containing such compounds and the use thereof in the medicine. Benzo[1,2,3]thiadiazine-1,1-dioxide derivatives of the general Formula (I) are suitable for the prevention or treatment of the diseases of the central nervous system.
Hydrazonyl Sultones as Stable Tautomers of Highly Reactive Nitrile Imines for Fast Bioorthogonal Ligation Reaction
作者:Ming Fang、Gangam Srikanth Kumar、Stefano Racioppi、Heyang Zhang、Johnathan D. Rabb、Eva Zurek、Qing Lin
DOI:10.1021/jacs.2c12325
日期:2023.5.10
Here we report the design and synthesis of a new class of bioorthogonal reagents called hydrazonyl sultones (HS) that serve as stable tautomers of highly reactive nitrile imines (NI). Compared to the photogenerated NI, HS display a broad range of aqueous stability and tunable reactivity in a 1,3-dipolar cycloaddition reaction, depending on substituents, sultone ring structure, and solvent conditions
在这里,我们报告了一类称为腙磺内酯 (HS) 的新型生物正交试剂的设计和合成,该试剂作为高反应性腈亚胺 (NI) 的稳定互变异构体。与光生 NI 相比,HS 在 1,3-偶极环加成反应中表现出广泛的水稳定性和可调反应性,具体取决于取代基、磺内酯环结构和溶剂条件。DFT 计算提供了对 HS → NI 互变异构现象的重要见解,包括碱基介导的阴离子互变异构化途径和小的激活屏障。四唑与 HS 介导的环加成的比较动力学分析表明,互变异构混合物中存在一小部分反应性 NI (~15 ppm),支持六元 HS 的非凡稳定性。
[EN] BENZO[1,2,3]THIADIAZINE DERIVATIVES<br/>[FR] DÉRIVÉS DE BENZO[1,2,3]THIADIAZINE
申请人:EGIS GYOGYSZERGYAR NYILVANOSAN
公开号:WO2008020255A1
公开(公告)日:2008-02-21
[EN] (I) The present invention relates to new benzo[1,2,3]thiadiazine-1,1 dioxide derivatives of the general Formula (I), medicament containing such compounds and the use thereof in the medicin Benzo[1,2,3]thiadiazine-1,1-dioxide derivatives of the gener Formula (I) are suitable for the prevention or treatment of the disease of the central nervous system. [FR] (I) L'invention concerne de nouveaux dérivés dioxydes benzo[1,2,3]thiadiazine-1,1 de formule générale (I), un médicament contenant de tels composés et leur utilisation en médecine. Les dérivés dioxydes benzo[1,2,3]thiadiazine-1,1 de formule générale (I) conviennent pour la prévention ou le traitement de la maladie du système nerveux central.
Synthesis of 4-unsubstituted 2H-1,2,3-benzothiadiazine 1,1-dioxides via ortho lithiation of protected benzaldehyde derivatives
derivatives with sulfur dioxide led to the lithium sulfinate salts, which gave, upon oxidative chlorination with sulfuryl chloride, the corresponding benzenesulfonyl chlorides. Then, depending on the aromatic substitution pattern of the molecule, several protocols were elaborated for the functional group transformations leading to the target compounds. Ring closure was performed with hydrazine hydrate or acetylhydrazine