Acta Chimica Slovenica最新文献_第7页

Syntheses, Crystal Structures and Antimicrobial Activity of Copper(II) Complexes with the Ligand N,N'-Bis(4-bromosalicylidene)propane-1,2-diamine. 配体 N,N'-双(4-溴代水杨醛基)丙烷-1,2-二胺铜(II)配合物的合成、晶体结构和抗菌活性。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-05-22 DOI: 10.17344/acsi.2024.8707

Yu-Mei Hao, Chang-Chun Sun

引用次数: 0

Synthesis, Crystal Structures and Catalytic Oxidation Property of Two Oxidovanadium(V) Complexes with Schiff bases. 含有希夫碱的两种氧化钒（V）配合物的合成、晶体结构和催化氧化特性。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-05-22 DOI: 10.17344/acsi.2024.8720

Yan Lei, Qiwen Yang, Xiuchan Xiao, Ya Liu

引用次数: 0

A new multifunctional phenanthroline-derived probe for colorimetric sensing of Fe2+ and ﬂuorometric sensing of Zn2. 一种新的多功能菲罗啉探针，用于比色法检测 Fe2+和荧光法检测 Zn2。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-05-22 DOI: 10.17344/acsi.2024.8710

Chen-Yu Qi, Xue Dong, Ying-Cui Fan, Jun-Ru Yuan, Zi-Jie Song, Yong-Han Zhang, Ya-Ping Xie, Feng Yang, Jian-Ping Ma, Meng Wang, Jie Qin

引用次数: 0

New Compounds Derived from Nitrophenol Synthesis, Structural investigation and anticorrision Properties. 由硝基苯酚衍生的新化合物的合成、结构研究和抗溃疡特性。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-04-24 DOI: 10.17344/acsi.2023.8489

Ali Mahdi Farhan, Hanaa Kadtem Egzar, Hawraa Mahdi Alabidi

引用次数: 0

Expression and purification of active human 17β-Hydroxysteroid dehydrogenase type 1 from Escherichia coli. 从大肠杆菌中表达和纯化活性人 17β 型羟类固醇脱氢酶。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-04-23 DOI: 10.17344/acsi.2024.8629

Sofija S Bekić, Jovana J Plavša, Miha Pavšič, Brigita Lenarčič, Edward T Petri, Andjelka S Ćelić

{"title":"Expression and purification of active human 17β-Hydroxysteroid dehydrogenase type 1 from Escherichia coli.","authors":"Sofija S Bekić, Jovana J Plavša, Miha Pavšič, Brigita Lenarčič, Edward T Petri, Andjelka S Ćelić","doi":"10.17344/acsi.2024.8629","DOIUrl":"10.17344/acsi.2024.8629","url":null,"abstract":"Breast cancer cell growth is often dependent on the presence of steroidal hormones. The 17β-hydroxysteroid dehydrogenase type 1 isoform (17βHSD1) catalyzes NADPH-dependent conversion of estrone to estradiol, a more potent estrogen, and represents potential drug target for breast cancer treatment. To provide active enzyme for inhibitor screening, 17βHSD1 is usually expressed in insect or mammalian cells, or isolated from human placenta. In the present study we describe a simple protocol for expression and purification of active human 17βHSD1 from BL21(DE3) Escherichia coli cells. Soluble human 17βHSD1 was expressed using a pET28a(+)-based plasmid, which encodes a hexahistidine tag fused to the N-terminus of the protein, and purified by nickel affinity chromatography. The enzyme activity of purified 17βHSD1 was verified by three methods: thin-layer chromatography, an alkali assay and a spectroscopic assay. These non-radioactive enzyme assays require only standard laboratory equipment, and can be used for screening compounds that modulate 17βHSD1 activity.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 2","pages":"256-263"},"PeriodicalIF":1.2,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141449255","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

Conformational Stability of 3-aminopropionitrile: DFT and Ab initio Calculations. 3-aminopropionitrile 的构象稳定性：DFT 和 Ab initio 计算。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-04-23 DOI: 10.17344/acsi.2023.8486

Ashraf Al Msiedeen

{"title":"Conformational Stability of 3-aminopropionitrile: DFT and Ab initio Calculations.","authors":"Ashraf Al Msiedeen","doi":"10.17344/acsi.2023.8486","DOIUrl":"https://doi.org/10.17344/acsi.2023.8486","url":null,"abstract":"Many conformers of 3-aminopropionitrile are known. Due to the biomedical importance of 3-aminopropionitrile a full investigation of structural, vibrational, and other associated properties of all possible conformers was performed. The geometrical structures, relative stability, and vibrational frequencies of the gauche and trans 3-aminopropionitrile conformers have been studied using ab initio (CCSD/6-311+G(d,p)) and DFT (B3LYP and M06 functionals at 6-311+G(d,p) and aug-cc-pVDZ basis set) calculations. The conformational and vibrational studies of 3-aminopropionitrile molecule were presented here are in very good interpretation of the calculated data compared with very poor interpretation in previous studies. The results showed that the gauche 2 conformer is more stable by 0.19 kcal/mol than gauche 1, outlined as enthalpy change ΔH between the conformers, at CCSD/6-311+G(d,p). Additionally, the population analysis shows that the gauche conformers are more prevalent than the trans conformers in the gas phase, present at 72.8%, with gauche 2 being the dominating gauche conformer at 40.1%. These results are in good agreement with earlier experimental and theoretical conclusions. All minima conformers' thermodynamic characteristics have also been studied. The relevant bond lengths, bond angles, and dihedral angles were calculated at a different level of theory for all possible conformers. The geometrical outcomes of the conformers agree very well with the previous experimental results. Electrostatic potential surface (ESP) has been used to interpret the structure-activity relationship. The atomic charges are examined, together with the energy difference between HOMO (Highest Occupied Molecular Orbital) and LUMO (Lowest Unoccupied Molecular Orbital). Additionally, the HOMO-LUMO energy gap and other relevant molecular properties are computed. The most stable conformers' stabilization energy has been determined by the Natural Bond Orbital (NBO) analysis.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 2","pages":"244-255"},"PeriodicalIF":1.2,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141449334","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, Crystal Structures and Urease Inhibition of Copper(II) and Zinc(II) Complexes Derived from N,N'-Bis(4-bromosalicylidene)-1,3-propanediamine. N,N'-双(4-溴代水杨醛基)-1,3-丙二胺衍生的铜(II)和锌(II)配合物的合成、晶体结构和尿素酶抑制作用。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-04-19 DOI: 10.17344/acsi.2024.8640

Hai-Ying Chen, Rundong Lu, Jinkai Lei, Jiacheng Liu, Chi Liu, Liuxiu Chen, Wu Chen

{"title":"Synthesis, Crystal Structures and Urease Inhibition of Copper(II) and Zinc(II) Complexes Derived from N,N'-Bis(4-bromosalicylidene)-1,3-propanediamine.","authors":"Hai-Ying Chen, Rundong Lu, Jinkai Lei, Jiacheng Liu, Chi Liu, Liuxiu Chen, Wu Chen","doi":"10.17344/acsi.2024.8640","DOIUrl":"https://doi.org/10.17344/acsi.2024.8640","url":null,"abstract":"A new tetranuclear copper(II) complex [Cu4L2(N3)2(CH3OH)2](NO3)2·4CH3OH (1) and a new trinuclear zinc(II) complex [Zn3L2(CH3COO)2] (2) have been prepared from the bis-Schiff base N,N'-bis(4-bromosalicylidene)-1,3-propanediamine (H2L) with copper nitrate and zinc acetate, respectively, in the presence of sodium azide. The complexes were characterized by elemental analysis, IR and UV-Vis spectroscopy. Molecular structures of both complexes were confirmed by single crystal X-ray determination. The Cu(II) atoms in complex 1 are bridged by phenolate oxygen atoms and end-on azide ligands. The Zn(II) atoms in complex 2 are bridged by phenolate oxygen atoms and acetate ligands. The Cu(II) atoms in complex 1 are in square planar and square pyramidal coordination. The Zn(II) atoms in complex 2 are in square pyramidal and octahedral coordination. The Schiff base ligand coordinates to the metal atoms through two phenolate O and two imino N atoms. The biological assay reveals that the copper(II) complex has effective urease inhibition.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 2","pages":"236-243"},"PeriodicalIF":1.2,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141449270","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

Extraction and characterization of nanocellulose from waste of date palm "Phoenix dactylifera″ as reinforcement of polymer composites. 从作为聚合物复合材料增强材料的枣椰树 "Phoenix dactylifera "废弃物中提取纳米纤维素并确定其特性。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-04-18 DOI: 10.17344/acsi.2023.8517

Nebia Bouzidi, Meriem Kadri, Toufik Chouana, Hakim Belkhalfa, Abdellah Henni, Youcef Bouhadda

{"title":"Extraction and characterization of nanocellulose from waste of date palm \"Phoenix dactylifera″ as reinforcement of polymer composites.","authors":"Nebia Bouzidi, Meriem Kadri, Toufik Chouana, Hakim Belkhalfa, Abdellah Henni, Youcef Bouhadda","doi":"10.17344/acsi.2023.8517","DOIUrl":"https://doi.org/10.17344/acsi.2023.8517","url":null,"abstract":"The cellulose is the most abundant and renewable polymer in nature. It is characterized by its biodegradability that can help to establish a friendly environment. The main objective of this study is intended to characterize the nanocellulose obtained from waste date palm, including the dried palms (DP) and the fresh palms (FP) by implementing chemical methods (hydrolysis with H2SO4). Physical properties, morphology, the elemental composition and the thermal stability were determined by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), zeta sizer, scanning electron microscopy (SEM), whereas energy dispersive X-ray (EDX) and thermogravimetric analysis (TGA), respectively. FTIR, SEM and EDX results, revealed the effective removal of impurities, hemicellulose and lignin. Palm sample residues contained 35.99% of cellulose and 33.12% of cellulose nanocrystals (CNC) for DP, and 36.17% of cellulose and 34.35% of CNC for FP. The CNCs have higher crystallinity than the raw fibers and Zeta sizer was between 25 and 1150 nm. TGA analysis showedthat DP exhibited greater thermal resistance.","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"71 2","pages":"186-196"},"PeriodicalIF":1.2,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141449256","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

Insight into the interaction of quinizarin with SDS micelles -- effects of additives. 洞察喹吖啶与 SDS 胶束的相互作用--添加剂的影响。

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-04-18 DOI: 10.17344/acsi.2023.8539

Ana Maria Toader, Petruta Oancea, Izabella Dascalu, Mirela Enache

引用次数: 0

Effects of the extraction conditions on functional and structural characteristics of proteins from fenugreek seeds. 提取条件对葫芦巴种子蛋白质功能和结构特征的影响

IF 1.2 4区化学

Acta Chimica Slovenica Pub Date : 2024-04-17 DOI: 10.17344/acsi.2023.8576

Hilal Isleroglu, Gamze Nur Olgun

引用次数: 0