{"title":"DRUŠTVENE VESTI IN DRUGE AKTIVNOSTI SOCIETY NEWS, ANNOUNCEMENTS, ACTIVITIES.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"S57-S74"},"PeriodicalIF":1.2,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102578","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}
Jean Gullion, Noel Pinaud, Lindita Lari, Luisa Ronga, Patrice Agnamey, Céline Damiani, Solène Savrimoutou, Elise Si Ahmed Charrier, Tshering Zangmo, Stéphane Moreau, Mathieu Marchivie, Sandra Albenque, Vanessa Desplat, Pascal Sonnet
{"title":"Preliminary in vitro evaluation of anti-leukemic and antimalarial activities of pyrrolo[1,2-a]quinoxaline-carboxylic acid hydrazone derivatives.","authors":"Jean Gullion, Noel Pinaud, Lindita Lari, Luisa Ronga, Patrice Agnamey, Céline Damiani, Solène Savrimoutou, Elise Si Ahmed Charrier, Tshering Zangmo, Stéphane Moreau, Mathieu Marchivie, Sandra Albenque, Vanessa Desplat, Pascal Sonnet","doi":"10.17344/acsi.2026.9975","DOIUrl":"https://doi.org/10.17344/acsi.2026.9975","url":null,"abstract":"<p><p>New pyrrolo[1,2-a]quinoxaline-2-carboxylic acid hydrazone derivatives were synthesized from nitroaniline using a multi-step pathway. Structure characterization of these novel substituted pyrrolo[1,2-a]quinoxaline-carboxylic acid hydrazones was achieved by using FT-IR, 1H NMR, 13C NMR, X-Ray and HRMS spectral analysis. These pyrroloquinoxaline hydrazone compounds were then evaluated in vitro for their potential on the human acute myeloid leukemia cell line MV4-11, in which (N'-pyridin-2-ylmethylene)pyrrolo[1,2-a]quinoxaline-2-carboxylic acid hydrazone 1a showed an IC50 value of 15.51 µM. Given the structural similarities between our hydrazone derivatives 1 and some recently published quinoline-type hydrazone compounds for antimalarial use, our compounds were also evaluated for their antimalarial activity. Among them, compound 1c demonstrated promising antiplasmodial activity, with an IC50 of 0.02 μM against the 3D7 strain of Plasmodium falciparum, exhibiting a selectivity index (SI) exceeding 5000 against this strain. Against the chloroquine-resistant Plasmodium falciparum W2 strain, hydrazone 1e emerged as the most potent and promising antimalarial candidate (IC50 = 0.03 mM), demonstrating a cytotoxicity to-antiprotozoal activity ratio exceeding 3333.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"713-723"},"PeriodicalIF":1.2,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102678","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}
Patricia Akpomedaye Onocha, Michael Gabriel Ibok, Sasidhar B Somappa, Oluwakayode Olubunmi Odeja, Ejike Onwudiegwu Okpala, Sarah Oyenibe Nwozo, Ganiyat Kehinde Oloyede
{"title":"Chemical constituents and anticancer properties of bioactive compounds from Macrosphyra longistyla (DC.) Hiern.","authors":"Patricia Akpomedaye Onocha, Michael Gabriel Ibok, Sasidhar B Somappa, Oluwakayode Olubunmi Odeja, Ejike Onwudiegwu Okpala, Sarah Oyenibe Nwozo, Ganiyat Kehinde Oloyede","doi":"10.17344/acsi.2025.9684","DOIUrl":"https://doi.org/10.17344/acsi.2025.9684","url":null,"abstract":"<p><p>The phytochemical investigation of Macrosphyra longistyla (Rubiaceae) yielded five compounds: machaerogenin (1), β-sitosterol-3-O-β-D-glucopyranoside (2), 1-heneicosanol (3), stigmasterol (4) and oleanolic acid (5). Their structures were confirmed by FTIR, 1D/2D NMR, and HRMS-ESI analyses, and validated against literature data. These compounds are reported for the first time from this plant. They exhibited moderate anticancer activity and inhibited the proliferation of triple-negative breast cancer (MDA-MB-231) cells, with 15-23% inhibition of cell viability compared to the standard drug paclitaxel (PTX; 94%). The observed anticancer effects may support the plant's ethnomedicinal applications.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"669-676"},"PeriodicalIF":1.2,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102594","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}
Nguyen Thi Kim Anh, Nguyen Thi Trang, Danh C Vu, Hieu Tran-Trung, Le Duc Giang, Sy Vo Van, Dao Huynh Minh, Nguyen Ngan
{"title":"Chemical composition and bioactivities of Macaranga trichocarpa essential oil.","authors":"Nguyen Thi Kim Anh, Nguyen Thi Trang, Danh C Vu, Hieu Tran-Trung, Le Duc Giang, Sy Vo Van, Dao Huynh Minh, Nguyen Ngan","doi":"10.17344/acsi.2026.9883","DOIUrl":"https://doi.org/10.17344/acsi.2026.9883","url":null,"abstract":"<p><p>The present study investigated chemical composition and in vitro bioactivities of the essential oil (EO) of Macaranga trichocarpa leaves. The EO was analyzed using gas chromatography-mass spectrometry. The results showed the identification of 61 volatile constituents representing 97.54% of the total oil content. Sesquiterpene hydrocarbons were the predominant class (52.58%), with (E)-β-caryophyllene (17.66%), α-curcumene (16.04%), β-pinene (13.83%), linalool (9.52%), and β-caryophyllene epoxide (5.19%), identified as the major constituents. The EO showed weak antioxidant activity in both DPPH and ABTS radical scavenging assays. The EO demonstrated potent α-amylase inhibitory activity (IC50 = 120.70 ± 0.47 µg/mL), comparable to acarbose. Cytotoxicity evaluation using the MTT assay revealed that the EO exerted a dose-dependent inhibitory effect against the human hepatocellular carcinoma (HepG2) cell line. These findings provide the first report on the chemical composition of M. trichocarpa leaf EO, along with preliminary in vitro screening of its enzymatic and cytotoxic properties.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"686-693"},"PeriodicalIF":1.2,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102581","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}
{"title":"Design, synthesis, molecular docking, anti-inflammatory and antioxidant activity of novel 2-(1-(4-(4-chlorophenyl)thiazol-2-yl)-1H-pyrazol-4-yl)benzo[d]oxazoles.","authors":"Nirmala Darekar, Hemantkumar Akolkar, Sushama Takate, Dilip Thube, Dipak Raut, Vijay Khedkar, Dnyaneshwar Sirsat, Sadhana Mhaske","doi":"10.17344/acsi.2026.9704","DOIUrl":"https://doi.org/10.17344/acsi.2026.9704","url":null,"abstract":"<p><p>A series of novel 2-(1-(4-(4-chlorophenyl)thiazol-2-yl)-1H-pyrazol-4-yl)benzo[d]oxazoles 5 were synthesized from 2-[(E)-{1-[4-(4-chlorophenyl)-1,3-thiazol-2-yl]-1H-pyrazol-4-yl}(hydroxyimino)methyl]phenol 4 through Beckmann rearrangement. All the synthesized compounds were characterized with the help of IR, 1H and 13C NMR and LCMS techniques. All the synthesized compounds were screened for their in vitro anti-inflammatory and antioxidant activities. Among the newly synthesized compounds, compound 5c and 5e showed good anti-inflammatory activity and compounds 5c and 5d showed good antioxidant activity. Molecular docking study could provide valuable insights into the mechanism of anti-inflammatory activity. Furthermore, molecular docking studies into the active site of COX-2 enzyme indicated that compound 5c binds with good affinity, which is consistent with its considerable efficacy in the in vitro tests.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"677-685"},"PeriodicalIF":1.2,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102532","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}
Mallikarjunagouda B Patil, Priya A Hoskeri, Shridhar N Mathad, Mahanada B Math, Rajendraprasad S
{"title":"Synthesis and characterization of PVA-co-acrylic acid incorporating magnesium nanoparticles and their application in sweetening of natural gas.","authors":"Mallikarjunagouda B Patil, Priya A Hoskeri, Shridhar N Mathad, Mahanada B Math, Rajendraprasad S","doi":"10.17344/acsi.2025.9474","DOIUrl":"https://doi.org/10.17344/acsi.2025.9474","url":null,"abstract":"<p><p>Natural gas sweetening, involving removal of CO2 and H2S from CH4, is conventionally carried out by amine scrubbing, which is highly energy intensive. In the present study, we report the synthesis of poly(vinyl alcohol-co-acrylic acid) (PVA-co-AAc) based nanocomposite membranes incorporated with surface-stabilized magnesium nanoparticles (MgNPs) through a simple aqueous route. The MgNPs act as Lewis basic sites providing reversible chemisorption for CO2/H2S, while the polymer matrix ensures hydrophilic pathways for solution-diffusion along with mechanical robustness. The prepared membranes were characterized by FTIR, XRD, SEM, TEM, AFM, TGA/DSC, DMA and tensile strength. Gas permeation studies at 25-60 °C and 1-10 bar revealed improved CO2/CH4 and H2S/CH4 selectivity, with CO2/CH4 selectivity reaching 20.8, without loss in permeance. The synergistic effect of polymer-nanoparticle interaction enhanced both stability and separation performance. Process analysis indicates potential energy savings compared to conventional amine processes, showing promise for industrial scale natural gas sweetening.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"702-712"},"PeriodicalIF":1.2,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102760","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}
Rizwan Ahamad, Nazreen Tabassum, Rama K P, Prerna Saxena, Mohd Akhtar, Mohd Aqil, Mohd Mujeeb
{"title":"A validated UV spectrophotometric method for simultaneous determination of ascorbic acid and resveratrol using isosbestic point approach.","authors":"Rizwan Ahamad, Nazreen Tabassum, Rama K P, Prerna Saxena, Mohd Akhtar, Mohd Aqil, Mohd Mujeeb","doi":"10.17344/acsi.2025.9651","DOIUrl":"https://doi.org/10.17344/acsi.2025.9651","url":null,"abstract":"<p><p>A simple, precise UV-spectroscopy method using isosbestic point detection was developed for simultaneous analysis. The developed method exhibited good linearity over the concentration range of 0-12 μg/mL at both 269.7 nm and 252 nm. At 269.7 nm, the R2 values were 0.9963 and 0.9964 for ascorbic acid and resveratrol, with LOD/LOQ values of 1.597/4.838 μg/mL and 1.563/4.737 μg/mL, respectively. At 252 nm, the corresponding R2 values were 0.9922 and 0.9995, while the LOD/LOQ values were 2.537/7.688 μg/mL for ascorbic acid and 0.584/1.771 μg/mL for resveratrol. Percentage recovery rates of 50%, 100%, and 150% ranged from 98.6% to 100.6%, 98.5% to 100.4%, and 100.1% to 99.9%, respectively, with low %RSD values. %RSD of ascorbic acid and resveratrol combination, obtained during intra-day analysis, was 0.866% at λ1 and 0.486% at λ2. Inter-day test revealed a %RSD of 0.976% at λ1 and 0.664% at λ2, while repeatability was measured at 0.879 for λ1 and 0.411 for λ2, respectively. The developed UV method was simple, precise, and accurate for quantifying ascorbic acid and resveratrol in pure drugs in methanolic solution.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"661-668"},"PeriodicalIF":1.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102610","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}
Abdulkadir Yunusa, Abubakar Bawa, Misbahu Sambo, Magret Samuel Nadro, Abdulrahman Mahmoud Dogara, Ateeq Ahmed Al-Zahrani, Hussain Daifallah Almalki, Hemn Star
{"title":"Phytochemical composition, biological activities, and molecular docking analysis of Ozoroa insignis Delile leaf extracts.","authors":"Abdulkadir Yunusa, Abubakar Bawa, Misbahu Sambo, Magret Samuel Nadro, Abdulrahman Mahmoud Dogara, Ateeq Ahmed Al-Zahrani, Hussain Daifallah Almalki, Hemn Star","doi":"10.17344/acsi.2025.9205","DOIUrl":"https://doi.org/10.17344/acsi.2025.9205","url":null,"abstract":"<p><p>This study provides a comprehensive assessment of Ozoroa insignis Delile leaves in terms of their phytochemical, biological, and computational features. The extract showed substantial amounts of alkaloids (57.59 mg/g), flavonoids (141.48 mg/g), saponins (61.72 mg/g), and phenols (142.15 mg/g). DPPH and H2O2 scavenging activities reached 64.53% and 70.56%, respectively, at a concentration of 50 µg/mL. Fraction A showed the strongest inhibition, with the IC50 values of α-amylase and α-glucosidase of 53.61 and 78.5 µg/mL, respectively. Molecular docking showed that all six GC-MS-identified compounds exhibited binding affinities ranging from -4.6 to -6.0 kcal/mol. Overall, O. insignis is considered a promising source of bioactive compounds with antioxidant and enzyme-inhibiting properties for future pharmacological investigation.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"648-660"},"PeriodicalIF":1.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102680","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}
{"title":"Anion induced synthesis, crystal structures and urease inhibition of copper(II) complexes derived from N'-(3-bromo-5-chloro-2-hydroxybenzylidene)-4-methylbenzohydrazide.","authors":"Zhong-Lu You, Ling-Yu Wang, Fei-Yang Xie, Zi-Han Pu, Yao-Yao Cao, Da-Hua Shi","doi":"10.17344/acsi.2026.10000","DOIUrl":"https://doi.org/10.17344/acsi.2026.10000","url":null,"abstract":"<p><p>Aroylhydrazones have attracted considerable attention owing to their diverse biological properties and strong coordination ability toward metal ions. In the present study, two novel copper(II) complexes, [CuL(MeOH)]NO3·MeOH (1) and [CuBrL(MeOH)]·MeOH (2), derived from the aroylhydrazone ligand N'-(3-bromo-5-chloro-2-hydroxybenzylidene)-4-methylbenzohydrazide (HL), were successfully synthesized and comprehensively characterized using various physicochemical techniques. Single-crystal X-ray diffraction analyses revealed that the ligand coordinates to the copper(II) center in its deprotonated form (L⁻). Complex 1 exhibits a square planar geometry, and complex 2 exhibits a distorted square-pyramidal geometry around the Cu(II) ions. In complex 1, the coordination polyhedron is formed by the three donor atoms of the aroylhydrazone ligand and one methanol oxygen. In complex 2, the basal plane is defined by the three donor atoms of the aroylhydrazone ligand and one methanol oxygen, and the axial position is occupied by a bromide ligand. In addition, one methanol molecule is present as a solvent of crystallization in each complex. The supramolecular architectures of the complexes are further reinforced through intermolecular hydrogen-bonding interactions. Biological evaluation demonstrated that both copper(II) complexes possess remarkable inhibitory activity against Jack bean urease, with IC50 values of 0.5 and 1.1 μmol L⁻1 for complexes 1 and 2, respectively, indicating their potential as potent urease inhibitors.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"694-701"},"PeriodicalIF":1.2,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102550","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}
Mihaela Rebernik Gracej, Nives Kitanovski, Jakob Kljun
{"title":"Revisiting ruthenium scorpionate chemistry: Reactivity of bis(3,5-dimethylpyrazol-1-yl)acetic acid toward organoruthenium(II) precursors.","authors":"Mihaela Rebernik Gracej, Nives Kitanovski, Jakob Kljun","doi":"10.17344/acsi.2026.9999","DOIUrl":"https://doi.org/10.17344/acsi.2026.9999","url":null,"abstract":"<p><p>The reactivity of the scorpionate ligand bis(3,5-dimethylpyrazol-1-yl)acetic acid (L1H) toward organoruthenium(II) precursors was investigated. Reactions of chlorido and bromido p-cymene ruthenium dimers afforded the corresponding complexes in which L1H acts as a neutral κ2-N,N' donor. In the presence of acetonitrile and base, ligand deprotonation was accompanied by displacement of the p-cymene ligand, yielding a tris(acetonitrile)ruthenium(II) complex containing a κ3-N,N',O-coordinated scorpionate ligand. Under ethanol-containing reaction conditions, in situ esterification of the coordinated carboxylic acid group was observed, yielding crystals of a new ruthenium complex 4 containing the ethyl ester derivative of the ligand. The compounds 1-3 were characterized by NMR, IR, HRMS, while the crystal structures of compounds 1·H2O, 3·MeOH, and 4 were determined by single-crystal X-ray diffraction. The results demonstrate the influence of reaction conditions on the coordination mode and transformation of bis(pyrazolyl)acetate ligands in ruthenium chemistry.</p>","PeriodicalId":7122,"journal":{"name":"Acta Chimica Slovenica","volume":"73 3","pages":"639-647"},"PeriodicalIF":1.2,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149102643","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}