One-pot sequential synthesis and antifungal activity of 2-(benzylsulfonyl)benzothiazole derivatives
作者:María Sol Ballari、Natividad Herrera Cano、Daniel A. Wunderlin、Gabriela E. Feresin、Ana N. Santiago
DOI:10.1039/c9ra04488d
日期:——
New antifungal agrochemicals, derived from 2-(benzylsulfonyl)benzothiazole were synthesized by an environmentally friendly method, using water as reaction medium. These compounds were prepared by a one-pot, two-step synthesis, starting from 2-mercaptobenzothiazole and benzyl halides. The potential fungicides were tested against a panel of phytopathogenic fungi, with many of them showing a significant
以水为反应介质,采用环境友好的方法合成了由2-(苄基磺酰基)苯并噻唑衍生的新型抗真菌农药。这些化合物是通过一锅法,两步合成法制备的,从2-巯基苯并噻唑和苄基卤化物开始。针对一组植物病原性真菌测试了潜在的杀菌剂,其中许多杀菌剂与未氧化的类似物和市售抗真菌药Captan相比有显着改善。新的衍生物2-((2-氯苄基)磺酰基)苯并[ d ]噻唑(4f)和2-((4-甲基苄基)磺酰基)苯并[ d ]噻唑(4k)表现出显着的性能,能够抑制生长两个抗性霉菌(烟曲霉)和曲霉菌)。无论4F和4K可以被归类为广谱杀菌剂,正在成为这些模具,这在食品生产的负面影响的控制可能的候选人。
Synthetic and Mechanistic Studies of a Versatile Heteroaryl Thioether Directing Group for Pd(II) Catalysis
作者:Andrew M. Romine、Kin S. Yang、Malkanthi K. Karunananda、Jason S. Chen、Keary M. Engle
DOI:10.1021/acscatal.9b01471
日期:2019.9.6
an arene C–H olefination method was also successfully developed. Reaction progress kinetic analysis provides insights into the role of the directing group in each reaction, which is supplemented with computational data for the oxidative Heck reaction. Furthermore, this (BT)S directing group can be transformed into a number of synthetically useful functional groups, including a sulfone for Julia olefination
Green Synthesis of Potential Antifungal Agents: 2-Benzyl Substituted Thiobenzoazoles
作者:María Sol Ballari、Natividad Herrera Cano、Abel Gerardo Lopez、Daniel Alberto Wunderlin、Gabriela Egly Feresín、Ana Noemí Santiago
DOI:10.1021/acs.jafc.7b04130
日期:2017.11.29
and Aspergillus spp.: 2-((4-(trifluoromethyl)benzyl)thio)benzo[d]thiazole, 3ac, and 2-((4-methylbenzyl)thio)benzo[d]thiazole, 3al. Thus, 3ac and 3al can be considered as broad spectrum antifungal agents. Furthermore, two new compounds, 2-((4-iodobenzyl)thio)benzo[d]thiazole, 3aj, and 2-(benzylthio)benzo[d]oxazole, 3ba, showed better inhibitory effect against Botrytis cinerea and Fusarium oxysporum
通过环保方法合成了一系列苄基取代的硫代苯并唑,以寻找新的抗真菌农药。使用KOH,苄基卤化物和水从2-巯基苯并恶唑开始制备化合物,这是一种简单而生态的方法。测试了针对一组植物致病真菌的新型抗真菌药。两种化合物对灰霉病菌,尖孢镰刀菌和曲霉属菌显示出有趣的活性:2-((4-(三氟甲基)苄基)硫代)苯并[ d ]噻唑,3ac和2-((4-甲基苄基)硫代)苯并[ d ]噻唑,3al。因此,3ac和3al可以被认为是广谱抗真菌药。此外,与之相比,两种新化合物2-((4-碘苄基)硫代)苯并[ d ]噻唑和3ba 2-(苄硫基)苯并[ d ]恶唑和3ba具有更好的抑制灰葡萄孢和尖孢镰刀菌的作用。商用杀菌剂Captan。因此,可以将3aj和3ba视为减谱抗真菌剂。
Facile Synthesis of a Series of Non-Symmetric Thioethers Including a Benzothiazole Moiety and Their Use as Efficient In Vitro anti-Trypanosoma cruzi Agents
作者:Alcives Avila-Sorrosa、Jazz D. Tapia-Alvarado、Benjamín Nogueda-Torres、Karla Fabiola Chacón-Vargas、Francisco Díaz-Cedillo、María Elena Vargas-Díaz、David Morales-Morales
DOI:10.3390/molecules24173077
日期:——
A series of 2-benzylsulfanyl benzothiazole (BTA) derivatives were synthesized and fully characterized and in vitro tested against two strains of T. cruzi (NINOA and INC-5), exhibiting good activities at low concentrations.
A set of 2-benzylsulfanyl derivatives of benzothiazole was synthesized and evaluated for antimicrobial and cytotoxic activities. The biological screening on antimicrobial activity against a panel of Gram-positive and Gramnegative bacteria, yeasts and fungi identified benzylsulfanyl derivatives of benzothiazole as selective inhibitors of mycobacteria. The lead compounds in the set, dinitro derivatives exhibited significant activity against sensitive and multidrug-resistant strains of M. tuberculosis and low cytotoxicity. The QSAR study indicated that the antituberculotic activity is connected with LUMO and HOMO energies. The lower lipophilicity and the increased size of the molecule contribute to antituberculotic activity. Thus, dinitrobenzylsulfanyl derivatives of benzothiazole represent promising smallmolecule synthetic antimycobacterials.
Dedicated to Professor Dr. Karel Waisser on the occasion of his 75th birthday.
合成了一组苯并噻唑的 2-苄硫基衍生物,并对其抗菌和细胞毒性活性进行了评估。通过对一系列革兰氏阳性和革兰氏阴性细菌、酵母菌和真菌的抗菌活性进行生物筛选,发现苯并噻唑的苄硫基衍生物是分枝杆菌的选择性抑制剂。这组化合物中的主要化合物二硝基衍生物对敏感菌株和耐多药菌株的结核杆菌具有显著的活性和较低的细胞毒性。QSAR 研究表明,抗结核活性与 LUMO 和 HOMO 能量有关。较低的亲脂性和增大的分子尺寸有助于提高抗结核活性。因此,苯并噻唑的二硝基苄硫基衍生物是一种很有前途的小分子合成抗霉菌药物。 在 Karel Waisser 教授 75 岁生日之际,谨以此文献给他。