Facile Synthesis of 4H-1,2,4-Benzothiadiazine-1,1-dioxides
摘要:
[image omitted] o-Bromoarylsulfonylated amidines prepared either by acylation of amidine with o-bromoarylsulfonyl chloride or through the reaction of o-bromoarylsulfoamide with lactime ether underwent Cu(I)-catalyzed intramolecular cyclization to give 4H-1,2,4-benzothiadiazine-1,1-dioxides in good yield. By varying substituents on arylsulfonyl moieties, amidines, and lactime ethers, a small library of structurally diverse 4H-1,2,4-benzothiadiazine-1,1-dioxide derivatives was prepared.
Facile Synthesis of 4H-1,2,4-Benzothiadiazine-1,1-dioxides
摘要:
[image omitted] o-Bromoarylsulfonylated amidines prepared either by acylation of amidine with o-bromoarylsulfonyl chloride or through the reaction of o-bromoarylsulfoamide with lactime ether underwent Cu(I)-catalyzed intramolecular cyclization to give 4H-1,2,4-benzothiadiazine-1,1-dioxides in good yield. By varying substituents on arylsulfonyl moieties, amidines, and lactime ethers, a small library of structurally diverse 4H-1,2,4-benzothiadiazine-1,1-dioxide derivatives was prepared.
Design, synthesis and biological evaluation of 5‑substituted sulfonylureas as novel antifungal agents targeting acetohydroxyacid synthase
作者:Fanfei Meng、Pengcheng Mi、Zhenwu Yu、Wei Wei、Li Gao、Jinzhou Ren、Zhengming Li、Huanqin Dai
DOI:10.1016/j.molstruc.2022.132756
日期:2022.7
mortality of fungal infections and the emergence of severe antifungal drug resistance. In this work, 36 target compounds were designed and synthesized and several 5-substituted sulfonylureas possess much better antifungal activities than those of Fluconazole (FCZ) and amphotericin B (AMB). The most potent of these were L10, L23 and L31 with inhibition constants (Ki) determined in the range of 5.6∼9.6 nM
乙酰羟酸合酶(AHAS;EC2.2.1.6)仅存在于植物和微生物中,当磺酰脲类与AHAS催化亚基活性位点结合时,支链氨基酸(缬氨酸、亮氨酸和异亮氨酸)的生物合成受阻,导致无法进行合成这些蛋白质并最终导致植物和微生物的死亡。因此,AHAS 也是一个很有前途的抗真菌靶点。如今,迫切需要发现新的潜在靶点和化学结构,以防止真菌感染的发病率和死亡率不断增加,以及出现严重的抗真菌药物耐药性。在这项工作中,设计和合成了 36 种目标化合物,其中几种 5-取代磺酰脲类药物具有比氟康唑 (FCZ) 和两性霉素 B (AMB) 更好的抗真菌活性。L10、L23和L31对白色念珠菌AHAS 和 MICs 的抑制常数 ( K i ) 在 5.6∼9.6 nM 范围内(MIC 被确定为相对于相应药物抑制真菌生长 > 90% 的药物浓度- 无生长控制)<0.05∼0.78 µg/mL白色念珠菌SC 5314、17#
Evaluation of the in vitro and intracellular efficacy of new monosubstituted sulfonylureas against extensively drug-resistant tuberculosis
作者:Di Wang、Li Pan、Gang Cao、Hong Lei、Xianghong Meng、Jufang He、Mei Dong、Zhengming Li、Zhen Liu
DOI:10.1016/j.ijantimicag.2012.06.012
日期:2012.11
Acetohydroxyacid synthase (AHAS) has been regarded as a potential drug target against Mycobacterium tuberculosis as it catalyses the first step in the pathway for biosynthesis of branched-chain amino acids. In our previous work, several monosubstituted sulfonylureas that are inhibitors of AHAS showed obvious in vitro activity against M. tuberculosis. In this study, further exploration of the antitubercular activity of newly synthesised monosubstituted sulfonylureas was conducted. A series of new compounds were identified that exhibit significant activity against in vitro and intracellular extensively drug-resistant M. tuberculosis. These results provide a further insight into the structural requirements for targeting AHAS to develop potential new agents to combat tuberculosis. (C) 2012 Published by Elsevier B.V.
US5547953A
申请人:——
公开号:US5547953A
公开(公告)日:1996-08-20
Facile Synthesis of 4<i>H</i>-1,2,4-Benzothiadiazine-1,1-dioxides
作者:Artem Cherepakha、Vladimir O. Kovtunenko、Andrey Tolmachev、Oleg Lukin、Konstantin G. Nazarenko
DOI:10.1080/00397911.2010.494815
日期:2011.7.1
[image omitted] o-Bromoarylsulfonylated amidines prepared either by acylation of amidine with o-bromoarylsulfonyl chloride or through the reaction of o-bromoarylsulfoamide with lactime ether underwent Cu(I)-catalyzed intramolecular cyclization to give 4H-1,2,4-benzothiadiazine-1,1-dioxides in good yield. By varying substituents on arylsulfonyl moieties, amidines, and lactime ethers, a small library of structurally diverse 4H-1,2,4-benzothiadiazine-1,1-dioxide derivatives was prepared.