Exploring the thiazole scaffold for the identification of new agents for the treatment of fluconazole resistant Candida
摘要:
Cyclohexyliden- and 2-methylcyclohexyliden-hydrazo-4-arylthiazoles were synthesized and tested as antifungal agents. All compounds exhibited minimal inhibitory concentration (MIC) values comparable with those of fluconazole (FLC). Moreover, some compounds showed fungicidal activity at low concentration. Worth noting five out of nine compounds were active towards Candida albicans 25 FLC resistant isolated from clinical specimens. The cellular toxicity was evaluated and none of the compounds is toxic at the MIC. On the basis of our data we can conclude that these derivatives are promising agents for the treatment of resistant C. albicans.
通过Hantzsch缩合反应合成了七种新的2,4-二取代噻唑,并对其几种生物学活性进行了测定,以进行初步筛选。它们已经通过元素分析,UV-Vis光谱,TG-DTA,IR和1 H NMR进行了全面表征。这些结构在其取代基上表现出不同的药理作用(抗微生物活性,细胞毒性和hMAO抑制作用)和工业特性(在465-800 nm之间完全透明,并且具有高的热稳定性),可以被认为是进一步发展的良好先导化合物。J.杂环化学,(2009)。
structures. This study that was done using acetophenone thiosemicarbazone (1) as basic model, showed that: (a) the presence of lipophilic substituents in para position on benzene ring, (b) substitution of benzene ring and (c) substitution of hydrogen of thioamidefunction by a phenyl, strongly influence trypanocidal activity. The various modifications to basic structure (1) allowed the synthesis of 1-(4-chlorophenyl)
探索非洲锥虫缩氨基硫脲的结构-活性关系:布氏锥虫布氏,一系列的35缩氨基硫脲(1 - 35)已被合成和表征可以通过1 H NMR,13 C NMR,和FT-IR光谱。使用“ Lilit alamar blue”方法测试所有化合物的杀锥虫活性。考虑到它们的结构,比较了硫半脲的锥虫杀菌能力。该研究结果表明,使用苯乙酮缩氨基硫脲进行(1)作为基本模型,表明:(a)中的亲脂性的取代基的存在对在苯环上的位置,(b)苯环的取代和(c)硫代酰胺官能团的氢被苯基取代,强烈影响锥虫活性。对基本结构(1)的各种修饰允许合成1-(4-氯苯基)亚乙基-4-苯基-硫代氨基脲(34)。该化合物具有3.97μM的锥虫杀灭活性,是该系列中最活跃的。
Design, synthesis, biological evaluation, QSAR analysis and molecular modelling of new thiazol-benzimidazoles as EGFR inhibitors
作者:Aladdin M. Srour、Nesreen S. Ahmed、Somaia S. Abd El-Karim、Manal M. Anwar、Salwa M. El-Hallouty
DOI:10.1016/j.bmc.2020.115657
日期:2020.9
constitute several FDA-approved drugs for cancer treatment. In this work, a new set of 2-(2-(substituted) hydrazinyl)-4-(1-methyl-1H-benzo[d]imidazol-2-yl) thiazoles 4a-q were designed as epidermal growth factor receptor (EGFR) inhibitors and synthesized using concise synthetic methods. The new target compounds have been evaluated in vitro for their suppression activity against EGFR TK. Compounds 4n, 4h
杂环如噻唑和苯并咪唑被认为是特权结构,因为它们构成了几种FDA批准的用于癌症治疗的药物。在这项工作中,设计了一组新的2-(2-(取代)肼基)-4-(1-甲基-1 H-苯并[ d ]咪唑-2-基)噻唑4a-q作为表皮生长因子受体(EGFR)抑制剂,并使用简明的合成方法合成。已经在体外评估了新的目标化合物对EGFR TK的抑制活性。化合物4n,4h,4i,4a和4d与作为参考药物的厄洛替尼相比,具有显着的效力(IC50,71.67–152.59 nM; IC50厄洛替尼,152.59 nM)。此外,MTT分析表明,化合物4j,4a,4f,4h,4n对人乳腺癌细胞系(MCF-7)产生了最有希望的细胞毒性作用(IC50; 5.96-11-1.91 µM;厄洛替尼IC50; 4.15 µM)。化合物4a作为EGFR TK抑制剂和抗乳腺癌药物显示出有希望的活性。此外,4a诱导凋亡作用,并在G2 / M
Evaluation of a large library of (thiazol-2-yl)hydrazones and analogues as histone acetyltransferase inhibitors: Enzyme and cellular studies
作者:Simone Carradori、Dante Rotili、Celeste De Monte、Alessia Lenoci、Melissa D'Ascenzio、Veronica Rodriguez、Patrizia Filetici、Marco Miceli、Angela Nebbioso、Lucia Altucci、Daniela Secci、Antonello Mai
DOI:10.1016/j.ejmech.2014.04.042
日期:2014.6
thiazolidines and pyrimidin-4(3H)-ones, and we tested the whole library existing in our lab against human p300 and PCAF HAT enzymes. Some compounds (1x, 1c', 1d', 1i' and 2m) were more efficient than CPTH2 and CPTH6 in inhibiting the p300 HAT enzyme. When tested in human leukemia U937 and colon carcinoma HCT116 cells (100 μM, 30 h), 1x, 1i' and 2m gave higher (U937 cells) or similar (HCT116 cells) apoptosis
bisthiazole derivatives represent a prevalent scaffold in the antimicrobial drug discovery. Therefore, we have decided to synthesize somenew series of 4,5′‐bisthiazoles. A total of 17 compounds were synthesized, their structural elucidation being based on elemental analysis (C,H,N,S) and spectroscopic data (MS and 1H NMR). Their in vitro antimicrobial activities were assessed against several Gram‐positive
噻唑和联噻唑衍生物代表了抗菌药物发现中的普遍支架。因此,我们决定合成一些新的4,5'-双噻唑系列。总共合成了17种化合物,其结构解析基于元素分析(C,H,N,S)和光谱数据(MS和1 H NMR)。使用分光光度法评估了它们对几种革兰氏阳性和革兰氏阴性细菌菌株以及一种真菌菌株(白色念珠菌)的体外抗菌活性。一些化合物对革兰氏阴性大肠杆菌,鼠伤寒沙门氏菌和革兰氏阳性菌表现出中等至良好的抗菌活性。金黄色葡萄球菌和蜡状芽孢杆菌菌株。所有合成的化合物对白念珠菌均具有中度到很好的抑菌活性。
Azines from one-pot reaction of thiosemicarbazones
作者:Ashraf A. Aly、Alaa A. Hassan、Alan B. Brown、Mahmoud A. A. Ibrahim、El-Shimaa S. M. AbdAl-Latif
DOI:10.1080/17415993.2016.1210146
日期:2017.1.2
ABSTRACT Thermolysis and/or microwave irradiation of thiosemicarbazones gave the corresponding isothiocyanates, which on addition of either activated nitriles or aldehydes furnished various types of azines. The mechanism was discussed. The structures of products were proved by MS, IR, NMR, and elemental analyses. GRAPHICAL ABSTRACT