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Synthesis and investigation of antibacterial activity of 1-(4-substituted phenyl)-5-oxopyrrolidine-3-carbohydrazide derivatives 1-(4-取代苯基)-5-氧代吡咯烷-3-甲酰肼衍生物的合成及其抗菌活性研究

IF 0.6 4区化学

Chemija Pub Date : 2023-12-07 DOI: 10.6001/chemija.2023.34.4.3

Aurimas Plaga, Birutė Sapijanskaitė-Banevič, R. Vaickelionienė

{"title":"Synthesis and investigation of antibacterial activity of 1-(4-substituted phenyl)-5-oxopyrrolidine-3-carbohydrazide derivatives","authors":"Aurimas Plaga, Birutė Sapijanskaitė-Banevič, R. Vaickelionienė","doi":"10.6001/chemija.2023.34.4.3","DOIUrl":"https://doi.org/10.6001/chemija.2023.34.4.3","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000Hydrazides are very important precursors for the synthesis of a wide variety of derivatives, including heterocyclic compounds of biological interest in drug design and discovery. Acid hydrazides with a pyrrole, thiophene, furan, quinoline, isoquinoline, isoxazole and benzimidazole core in the structure were found to be used in medicine, pharmacy, agriculture and many other fields. \u0000In the search for compounds with antibacterial properties, mono- and dihydrazides were used in this study to prepare 1-(4-substituted phenyl)-5-oxopyr-rolidine-3-carbohydrazide derivatives bearing the corresponding hydrazone and azole substituents. \u0000The formation of the target compounds was performed via condensation reactions with the chosen aromatic aldehydes and isatin, which led to the construction of the appropriate hydrazone-type structures as well as with diketones which afforded compounds with pyrazole and pyrrole nuclei. \u0000In addition, a preliminary antibacterial evaluation of the synthesised compounds was performed using the gram-positive Bacillus subtilis and the gramnegative Escherichia coli bacterial strains. As it was expected, the evaluation revealed potential antibacterial candidates that can help address the global challenges of antibiotic resistance and infectious disease outbreaks. \u0000 \u0000 \u0000 \u0000","PeriodicalId":9720,"journal":{"name":"Chemija","volume":"134 ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138983580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of novel 4-alkyl-6-(5-aryl-1,2,3-thiadiazol-4-yl) benzene-1,3-diols as potential Hsp90 inhibitors 合成新型 4-烷基-6-（5-芳基-1,2,3-噻二唑-4-基）苯-1,3-二醇作为潜在的 Hsp90 抑制剂

IF 0.6 4区化学

Chemija Pub Date : 2023-12-07 DOI: 10.6001/chemija.2023.34.4.2

Paulina Kaziukonytė, Tomas Venslauskas, Kamilė Venskūnaitė, Ieva Žutautė, A. Brukštus

引用次数: 0

Hydrogen production on CoFe, CoFeMn and CoFeMo coatings deposited on Ni foam via electroless metal plating 通过无电解金属电镀沉积在泡沫镍上的 CoFe、CoFeMn 和 CoFeMo 涂层的制氢能力

IF 0.6 4区化学

Chemija Pub Date : 2023-12-07 DOI: 10.6001/chemija.2023.34.4.1

Huma Amber, Karina Vjūnova, Z. Sukackienė, D. Šimkūnaitė, J. Vaičiūnienė, L. Tamašauskaitė-Tamašiūnaitė, E. Norkus

{"title":"Hydrogen production on CoFe, CoFeMn and CoFeMo coatings deposited on Ni foam via electroless metal plating","authors":"Huma Amber, Karina Vjūnova, Z. Sukackienė, D. Šimkūnaitė, J. Vaičiūnienė, L. Tamašauskaitė-Tamašiūnaitė, E. Norkus","doi":"10.6001/chemija.2023.34.4.1","DOIUrl":"https://doi.org/10.6001/chemija.2023.34.4.1","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000In this study, the catalytic hydrogen generation was evaluated on the cobalt–iron (CoFe), cobalt–iron–manganese (CoFeMn) and cobalt–ironmolybdenum (CoFeMo) coatings deposited on the Ni foam substrate using the electroless metal plating method and morpholine borane as the reducing agent. The characterisation of the surface morphology, structure and composition of resulted coatings was done using scanning electron microscopy (SEM) and inductively coupled plasma optical emission spectroscopy (ICP-OES). The catalytic activity of the prepared CoFe/Ni, CoFeMn/Ni and CoFeMo/Ni catalysts was investigated for hydrogen generation from an alkaline sodium borohydride (NaBH4) solution at different temperatures. It was found that the hydrogen generation rate of ca. 5.2, 7.8 and 11.7 L min–1 g–1 was achieved by using the CoFe/ Ni, CoFeMo/Ni and CoFeMn/Ni coatings, respectively, at 343 K. Among the investigated catalysts, CoFeMn/Ni exhibits the lowest activation energy of 62.4 kJ mol–1 and the highest HGR of 11.7 L min–1 g–1 at 343 K. \u0000 \u0000 \u0000 \u0000","PeriodicalId":9720,"journal":{"name":"Chemija","volume":"44 23","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139011656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of silver nanoparticles with polyols under reflux and microwave irradiation conditions 多元醇在回流和微波辐照条件下合成纳米银

4区化学

Chemija Pub Date : 2023-09-17 DOI: 10.6001/chemija.2023.34.3.1

Edita Daublytė, Marija Kalnaitytė, Aliona Klimovich, Audrius Drabavičius, Tatjana Charkova

引用次数: 0

Intrinsic emissions and formation of electron-hole trapping centres in excited Li2SO4 激发态Li2SO4的本征发射和电子空穴俘获中心的形成

4区化学

Chemija Pub Date : 2023-09-17 DOI: 10.6001/chemija.2023.34.3.2

Turlybek N. Nurakhmetov, Temirulan T. Alibay, Doszhan A. Tolekov, Raushan K. Shamiyeva, Sapargali Pazylbek, Dovydas Karoblis, Rimantas Raudonis, Aleksej Zarkov, Jonas Kiuberis, Aivaras Kareiva

引用次数: 0

Assessment of the deterioration process of copper alloys: a case study of Central Lithuanian crossbow brooches with a triangular foot 铜合金变质过程的评估:以立陶宛中部带三角形脚的十字弓胸针为例

4区化学

Chemija Pub Date : 2023-09-17 DOI: 10.6001/chemija.2023.34.3.3

Asta Vasiliauskaitė

引用次数: 0

Synthesis and dihydrofolate reductase inhibitory activity of 2-amino-6-(arylaminomethyl) thieno[2,3-d]pyrimidin-4(3H)-ones 2-氨基-6-(芳基氨基甲基)噻吩[2,3-d]嘧啶-4(3H)-酮的合成及二氢叶酸还原酶抑制活性

4区化学

Chemija Pub Date : 2023-09-17 DOI: 10.6001/chemija.2023.34.3.4

Mindaugas Dailidė, Sigitas Tumkevičius

{"title":"Synthesis and dihydrofolate reductase inhibitory activity of 2-amino-6-(arylaminomethyl) thieno[2,3-d]pyrimidin-4(3H)-ones","authors":"Mindaugas Dailidė, Sigitas Tumkevičius","doi":"10.6001/chemija.2023.34.3.4","DOIUrl":"https://doi.org/10.6001/chemija.2023.34.3.4","url":null,"abstract":"The present work deals with synthesis and biological evaluation of novel compounds as potential inhibitors of dihydrofolate reductase (DHFR) from opportunistic microorganisms – Pneumocystis carinii (pc), Toxoplasma gondii (tg) and Mycobacterium avium (ma). A set of 6 lipophilic and 1 classical antifolates of thieno[2,3-d]pyrimidine series were designed and synthesised with key pharmacophoric features of DHFR inhibitors and aminomethylene bridge joining the aromatic part and 2-amino-4-oxothieno[2,3-d]pyrimidine nucleus. Investigation of the DHFR inhibitory activity of the synthesised compounds revealed that 2-amino-6-[(4-methoxyphenylamino)-, 6--[(4-chlorophenylamino)- and 6-[(2,5 ichlorophenylamino)methyl]thieno[2,3-d]pyrimidin-4(3H)- ones had a moderate activity (IC50 56.5, 49.9 and 23 μM, respectively) against pcDHFR. Activity of those compounds against tgDHFR (IC50 6.0, 2.8 and 2.3 μM, respectively) was comparable to that of trimethoprim (IC50 2.7 μM). No synthesised lipophilic antifolates showed activity towards maDHFR. The classical antifolate 2-{4-[(2-amino-4-oxo-3,4- dihydrothieno[2,3-d]pyrimidin-6-yl)methylamino]benzamido}-L-glutamic acid inhibited DHFRs from all microorganisms (IC50 6.6 μM for pcDHFR, 1.06 μM for tgDHFR and 16.9 μM for maDHFR).","PeriodicalId":9720,"journal":{"name":"Chemija","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135259096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emission of additives and degradation products from commercial polypropylene, polyethylene and their composite packages 商用聚丙烯、聚乙烯及其复合包装中添加剂和降解产物的排放

IF 0.6 4区化学

Chemija Pub Date : 2023-07-05 DOI: 10.6001/chemija.2023.34.2.4

T. Petrulionienė, T. Murauskas, Mantas Norkus, E. Naujalis

{"title":"Emission of additives and degradation products from commercial polypropylene, polyethylene and their composite packages","authors":"T. Petrulionienė, T. Murauskas, Mantas Norkus, E. Naujalis","doi":"10.6001/chemija.2023.34.2.4","DOIUrl":"https://doi.org/10.6001/chemija.2023.34.2.4","url":null,"abstract":"Migration is a known phenomenon defined as the partitioning of certain chemical compounds from plastic food packaging into food and has been intensely investigated in recent years. Due to outstanding chemical and physical properties plastics are used in many fields. Polypropylene and polyethylene are extensively used polymers because of their chemical resistance, high tensile strength and low density. To improve the properties of the plastics, additives such as plasticizers, stabilizers, antioxidants, lubricants, pigments and others are required to be added. However, they can migrate from the plastics into the food and contaminate it during production or storage. Therefore, the aim of this study was to investigate commercial polypropylene and polyethylene packages to determine what most often used additives and degradation products of the food packages can migrate to food. After the initial identification of plastics by Fourier-transform infrared spectrometry, the determination of cadmium, chromium, lead and mercury was carried out by atomic absorption spectrophotometry. To evaluate possible volatile and semi-volatile organic compounds thermal desorption gas chromatography coupled with mass spectrometry was used. The results revealing the presence of different potential organic compounds and metals emitted during the degradation process of different types of food contact materials are discussed.","PeriodicalId":9720,"journal":{"name":"Chemija","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41511182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the qualitative and quantitative composition of amino acids in the herb of smallflowered galinsoga (Galinsoga parviflora L.) using gas chromatography 气相色谱法研究小花加林子(galinsoga parviflora L.)中氨基酸的定性和定量组成

IF 0.6 4区化学

Chemija Pub Date : 2023-07-05 DOI: 10.6001/chemija.2023.34.2.2

Daiva Kazlauskienė, Palma Nenortienė, Deividas Kvedaravičius, J. Daukšienė, S. Velžienė

引用次数: 0

Thermodynamic, thermochemical and thermophysical properties of HgBr2 HgBr2的热力学、热化学和热物理性质

IF 0.6 4区化学

Chemija Pub Date : 2023-07-05 DOI: 10.6001/chemija.2023.34.2.1

A. Kozma, A. Malinina, E. Golub, V. Rusyn, N. Golub, Vitalii Dziamko, Viktoriia Dziamko, O. Malinin, A. Solomon

{"title":"Thermodynamic, thermochemical and thermophysical properties of HgBr2","authors":"A. Kozma, A. Malinina, E. Golub, V. Rusyn, N. Golub, Vitalii Dziamko, Viktoriia Dziamko, O. Malinin, A. Solomon","doi":"10.6001/chemija.2023.34.2.1","DOIUrl":"https://doi.org/10.6001/chemija.2023.34.2.1","url":null,"abstract":"For mercury dibromide HgBr2, a promising component of the working mixture of gas-discharge exciplex sources of coherent (lasers) and spontaneous (exciplex lamps) radiation, as well as a promising nonlinear optical crystal for the infrared radiation process, thermodynamic and thermochemical properties in the temperature range 173–512 K were investigated. The established basic thermodynamic (isobaric heat capacity Ср, total entropy S, enthalpy H and Gibbs energy G) and thermochemical (enthalpy ΔHf and Gibbs energy ΔGf of formation) functions of HgBr2 were compared with the known literature data at 298–514 K. The obtained results differed from the literature within 1–2% (for Ср), 0.1–0.2% (for S, H and G) and 0.1–0.6% (for ΔHf and ΔGf). The experimental data, combined with semi-empirical approaches and ab initio calculations taken from the literature, were used to estimate the previously unknown additional thermodynamic and thermophysical properties of HgBr2: isochoric heat capacity CV, Debye temperature θD, volume thermal expansion αV, isothermal compressibility βT (isothermal bulk modulus BT = 1/βT), Grüneisen constant γG, phonon longitudinal vl, transverse vs, average –v velocities and phonon thermal conductivity κ. In the present work, it was found that crystalline mercury dibromide expands strongly upon heating and has a low phonon thermal conductivity.","PeriodicalId":9720,"journal":{"name":"Chemija","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48486812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0