合成了一系列新的N-取代N '(4,6-二甲基嘧啶-2-基)-硫脲衍生物(3a,3b,3c,3d)和相关的稠合杂环化合物(4a,4b,4c,4d)使用四丁基溴化铵作为相转移催化剂(PTC)。制备了N -[(2 E)-5,7-二甲基-2 H- [1,2,4]噻二唑[2,3- a ]嘧啶-2-亚基]衍生物(4a,4b,4c,4d)通过3a的氧化环化,3b,3c,3d。这些新化合物的结构通过IR,1 H NMR,13 C NMR,质谱和元素分析进行表征。晶体结构由单晶X射线衍射数据确定。结果表明,该化合物对被测微生物具有广谱的活性,并且与细菌相比,对真菌的活性更高。化合物3d和3a表现出最大的抗菌活性。J.杂环化学.2011。
Synthesis, computational studies and enzyme inhibitory kinetics of benzothiazole-linked thioureas as mushroom tyrosinase inhibitors
作者:Rabail Ujan、Aamer Saeed、Saba Ashraf、Pervaiz Ali Channar、Qamar Abbas、Mahboob Ali Rind、Mubashir Hassan、Hussain Raza、Sung-Yum Seo、Hesham R. El-Seedi
DOI:10.1080/07391102.2020.1804459
日期:2021.12.12
Abstract Herein, we report synthesis of a set of benzothiazole-thiourea hybrids with aromatic and aliphatic side chains (BT1 to BT9) using an elegant synthetic strategy. The newly synthesized benzothiazole-thiourea conjugates were subjected to In-vitro tyrosinase inhibition and freeradicalscavenging activity. Majority of the compounds indicated inhibition considerably improved than the standard;
3-Aminobenzenesulfonamides incorporating acylthiourea moieties selectively inhibit the tumor-associated carbonic anhydrase isoform IX over the off-target isoforms I, II and IV
作者:Tanzeela Abdul Fattah、Silvia Bua、Aamer Saeed、Ghulam Shabir、Claudiu T. Supuran
DOI:10.1016/j.bioorg.2018.10.006
日期:2019.2
We describe the synthesis of a series of novel 1-aroyl/acyl-3-(3-aminosulfonylphenyl) thioureas (4a–k) acting as human carbonic anhydrase (hCA, EC 4.2.1.1) inhibitors. Reaction of alkyl/aryl isothiocyanates with 3-aminobenzenesulfonamide afforded a series of the title compounds incorporating a variety of short as well as highly lipophilic long tails. The newly synthesized sulfonamides were evaluated
ascertained the inhibitory potential of compound 5a. Based on the in silico studies, it can be suggested that compounds 5a and 5j can serve as a structural model for the design of antibacterial agents with better inhibitory potential. Graphic abstract Binding mode of compound 5j inside the active site of RNA in 3D space. 5j displayed highest antibacterialpotential than the reference drug ampicillin with ZOI
Design, Synthesis, and Insecticidal Activity of Novel Doramectin Derivatives Containing Acylurea and Acylthiourea Based on Hydrogen Bonding
作者:Qi Zhang、Yao Cheng、Cheng Zheng、Ping Bai、Jian Yang、Xiaoxia Lu
DOI:10.1021/acs.jafc.0c00230
日期:2020.5.27
investigation on the insecticidalactivities of several doramectin derivatives preliminarily revealed that the presence of hydrogen bonds at the C4″ position of the molecule with target protein γ-aminobutyric acid (GABA) receptor was crucial for retaining high insecticidalactivity. As a continuation of our research work on the development of new insecticides, two series of novel acylurea and acylthiourea
Amino-1,3-benzoselenazoles were generated from the reactions of bis(o-aminophenyl)diselenide and various isothiocyanates under metal-free cyclization conditions. The cyclization of isothiocyanate bearing bulky substituents proceeded in excellent yields because the amounts of byproducts generated were reduced. Acid hydrolysis of acetamide produced 2-amino-1,3-benzoselenazole (4). Benzothiazole, a bioisostere