Asian Journal of Chemistry最新文献

{"title":"Impurity Profiling and a Stability Indicating Advanced Liquid Chromatographic Method Development and Validation for the Estimation of Related Impurities of Anagrelide","authors":"Pavani Peddi, P. Prasada Rao, Ch. Pavan Kumar, N. Usha Rani, S. Tulasi","doi":"10.14233/ajchem.2024.30785","DOIUrl":"https://doi.org/10.14233/ajchem.2024.30785","url":null,"abstract":"A novel, streamlined and highly selective isocratic liquid chromatographic method has been developed for the quantification of impurities present in anagrelide. Exceptional resolution between anagrelide and its impurities was accomplished utilizing a Waters  Nova Pack C18 column (250 mm × 4.6 mm, 4 µm), employing a phosphate buffer with a pH of 4.4 as mobile phase A and a blend of  acetonitrile and methanol with buffer in a 30:40:30 v/v/v ratio as mobile phase B. The column oven was maintained at 35 ºC and the  mobile phase flowed at a constant rate of 1.0 mL/min, while detection was set at 254 nm. Rigorous validation was conducted to assess  accuracy, precision, specificity, linearity and sensitivity. Validation studies have unequivocally established the HPLC method’s precision,  specificity, rapidity, reliability and reproducibility. Linearity was ascertained for both anagrelide and its impurities, exceeding an R2 value of 0.95. The limits of detection (LOD) and limit of quantitation (LOQ) were determined to be more than sufficient for precise  estimation. This method was validated in accordance with the stringent ICH guidelines. The relative standard deviation (RSD) for intra- day and inter-day precision remained consistently below 5%. Percentage recovery demonstrated excellent agreement, affirming the  simplicity, specificity, precision and enhanced accuracy of method for determining related substances in pharmaceutical substances  and various anagrelide-containing dosage forms. ","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, Antimicrobial Activity and Molecular Docking of Some Novel 2-Aryl-4H-[1,3]-thiazolo[4,5-b]indoles","authors":"Bhargavi Posinasetty, R. K. Kumarachari, Prashanti Chitrapu, Jyothirmayee Devineni, S. Dharmalingam, Chilamakuru Naresh Babu, Jayendra Kumar","doi":"10.14233/ajchem.2024.30986","DOIUrl":"https://doi.org/10.14233/ajchem.2024.30986","url":null,"abstract":"In present study, six novel 2-aryl-4H-[1,3]-thiazolo[4,5-b]indoles (4a-f) were synthesized by integrating thiazole and indole motifs through a three-component one-pot condensation involving isatin, ammonium thiocyanate and arylaldehydes. Structural confirmation  was achieved using IR, 1H NMR and mass spectrometric techniques. Molecular targets, bioactivity scores, drug-likeness, anti- tuberculosis and antibacterial properties and toxicity were all predicted using various computational techniques. To calculate binding  affinities to Mycobacterium tuberculosis enoyl-ACP reductase and Escherichia coli Topoisomerase IV, in vitro bioactivity studies were  performed and Schrödinger docking simulations were performed. Anti-tubercular efficacy was evaluated using the MABA method,  while antibacterial effectiveness against both Gram-positive and Gram-negative bacteria was assessed through the agar plate method.  The results highlight the potential of these heterocyclic molecular hybrids, positioning them as promising candidates for further lead  optimization in the development of more potent and safer pharmaceutical agents. ","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"429 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, Docking and Biological Evaluation of New Series of Pyrrolidine Derivatives as Potent Antibacterial Agents","authors":"R. Guguloth, S. K. Gubbiyappa","doi":"10.14233/ajchem.2024.31036","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31036","url":null,"abstract":"The chemical flexibility of the pyrrolidine nucleus and its ability to generate a wide range of structural variations may have a significant impact on the therapeutic effectiveness. In present study, 17 analogs of 1-(4-bromo-2-(pyrrolidin-1-yl)benzyl)pyrrolidin-3-amine (7a-q) were synthesized and characterized. All the synthesized compounds were purified by combi-flash chromatography using RediSep RF 1.5 Flash silica gel columns. The synthesized compounds were investigated for antibacterial activity utilizing the agar well diffusion method. Apart from compounds 7l, 7o and 7p, antibacterial activity against E. coli was exhibited by almost all the compounds. All the tested compounds were effective in showing antibacterial activity against Bacillus and against Aspergillus niger, none of the drugs had antifungal efficacy. The SwissADME analysis of the synthesized compounds, the Lipinski characteristics revealed that compounds 7a, 7b, 7e-h, 7j-l, 7n and 7o don’t violate the rule of five. Therefore, these substances might be viewed as orally accessible and pharmacologically active drug candidates. Auto DockVina was used for the purpose of molecular docking of the synthesized compounds.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"432 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable Industrial Wastewater Treatment and Antibacterial Activity using Environmental Friendly Ferrite Nanoparticles","authors":"M. Sathish, V. Sathana, A. Venkatesan, S. Amalraj, Anand Gaspar, M. M. Julie, J. Jayaprakash","doi":"10.14233/ajchem.2024.30882","DOIUrl":"https://doi.org/10.14233/ajchem.2024.30882","url":null,"abstract":"A comparison studies of two unique bimetallic spinel ferrite nanoparticles synthesized by the sol-gel process, namely Co-NiFe2O4 andCu-ZnFe2O4 were investigated. Various characterization approaches were utilized to examine the structural, morphological, magnetic and electrical characteristics of the nanoparticles. Both Co-NiFe2O4 and Cu-ZnFe2O4 nanoparticles formed single-phase spinel  structures, according to X-ray diffraction (XRD) research whereas FTIR spectra provided information about the vibrational modes and  chemical bonding within the nanoparticles confirmed the presence of desired metal-oxygen bonds chemical bonding within the  nanoparticles. The UV-Vis spectroscopy revealed the optical absorption properties of the nanoparticles indicating the presence of  energy bandgaps in the visible range. Scanning electron microscopy (SEM) images suggested the uniform and well-dispersed  nanoparticles with average sizes in the nanoscale range. Vibrating sample magnetometry (VSM) measurements demonstrated that  both Co-NiFe2O4 and Cu-ZnFe2O4 nanoparticles exhibited ferromagnetic behaviour at room temperature. The saturation  magnetization values were found to be higher for Co-NiFe2O4 nanoparticles compared to Cu-ZnFe2O4 nanoparticles, suggesting the  superior magnetic properties of the former. As a result, ferrites demonstrate promise in industrial wastewater treatment, facilitating  efficient heavy metal removal and advanced organic pollutant degradation, contributing to a sustainable and effective solution. The  antibacterial efficacy of synthesized bimetallic ferrite nanoparticles against Salmonell typhi, Escherichia coli, Staphyloccus aureus,  Bacillus cereus proves that the synthesized ferrite nanoparticles possess a good antibacterial activity against the selected pathogens. ","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"184 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140477234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Green Method of Reducing Graphene Oxide by Tangerine Peel Extract","authors":"Raghad Hamid, R. M. Zawawi","doi":"10.14233/ajchem.2024.31027","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31027","url":null,"abstract":"This work introduces a simple and environmental friendly approach for synthesizing reduced graphene oxide using tangerine peel extract as a non-toxic alternative to toxic compounds. Various microscopic and spectroscopic techniques were used to characterize the synthesized reduced graphene oxide. The UV-visible spectra of reduced graphene oxide (287 nm) at specific wavelengths and the FTIR analysis showed that the oxygen groups in reduced graphene oxide were reduced. Raman analysis confirmed a small increase in the intensity ratio of the D-band to the G-band. The X-ray diffraction spectra showed the presence of reduced graphene oxide in the 2θ angle, at 28.36º peak with a d-spacing value of 2.12 nm. The wettability and morphology of reduced graphene oxide were also investigated. The carbon-to-oxygen ratio of reduced graphene oxide was increased compared to graphene oxide in addition, the cyclic voltammetry was used to evaluate the electrochemical behaviour of the reduced graphene oxide.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"251 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140473742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of Degradation Products of Selpercatinib by Mass Spectrometry: Optimization of Stability-Indicating HPLC Method for Separation and Quantification of Process Related Impurities of Selpercatinib","authors":"Srinivasa Rao Katta, Gajanand Thakre","doi":"10.14233/ajchem.2024.30884","DOIUrl":"https://doi.org/10.14233/ajchem.2024.30884","url":null,"abstract":"The study aimed to investigate a novel approach by utilizing liquid chromatography in coupled with mass spectrometry (LC-MS) to resolve, analyze and characterize significantly less quantity of stress degradation products (DPs) of selpercatinib along with its process related impurities. The analytes resolved on ZORBAX Eclipse (250 mm) stationary phase that was maintained employing 0.5 M sodium perchlorate at pH 5.4 methanol and acetonitrile in 50:20:30 (v/v) pumped at 0.8 mL/min isocratic flow and 241 nm wavelength. The method produces very high correlate linear curve in 30-240 μg/mL for selpercatinib and 0.03-0.24 μg/mL for its impurities with significantly low detection limit of 0.01 μg/mL for impurities. Selpercatinib pure compound was subjected to stress studies and chromatographic results confirm the formation of four DPs, which were characterized with the interpretation of their mass fragmentation pattern. The DPs were identified as 6-hydroxy-4-(6-(6-((6-methoxypyridin3-yl)methyl)-3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (DP 1), 6′-(6-((6-methoxypyridin-3-yl)methyl)-3,6-diazabicyclo[3.1.1]heptan-3-yl)-1,2-dihydro-[3,3′-bipyridin]-5-ol (DP 2), (6-hydroxy-4-(6-(6-(pyridin-3-ylmethyl)-3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (DP 3), 1-amino-6′-(6-((6-methoxypyridin-3-yl)methyl)-3,6-diazabicyclo[3.1.1]heptan-3-yl)-1,2-dihydro-[3,3′-bipyridin]-5-ol (DP 4), 6-(2-hydroxy-2-methyl-propoxy)-4-(6-(3-methylpiperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (DP 5) and 6-(2-hydroxy-2-methyl-propoxy)-4-(6-(3-methylpiperazin-1-yl)pyridin-3-yl)pyrazolo[1,5-a]pyridine-3-carbonitrile (DP 6). Based on findings, it was concluded that this method was effectively applied for the regular quantification of impurities of selpercatinib in formulations. Additionally, it demonstrated applicability for the identification of both known and unknown impurities of selpercatinib.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"7 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal Organic Framework Derived Cu-Carbon Composite for the Effective Reduction of p-Nitrophenol","authors":"Zubair Hasan, Md. Shariful Islam, M. Hassan, Md. Nazmul Abedin Khan, Mohammad Mahbubur Rahman, Mohammad Farhadur Rahman","doi":"10.14233/ajchem.2024.31153","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31153","url":null,"abstract":"A Cu-carbon composite (Cu-C) was prepared via single-step carbonization of a metal-organic framework (MOF) composed of Cu2+ and 1,4-benzene dicarboxylate (BDC) and applied as a catalyst to degrade p-nitrophenol. The composite was characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM)/energy-dispersive X-ray (EDS), Fourier-transform infrared (FTIR) and X-ray photoelectron (XPS) spectroscopies. The characterization affirmed the preservation of MOF-originated CuO and metallic Cu in the carbon network. In presence of NaBH4, the Cu-C composite resulted in a complete reduction of p-nitrophenol within a few min and exhibited much higher removal rate than commercial CuO. The role of NaBH4 concentration in p-nitrophenol reduction was highlighted in the context of relevant catalytic mechanisms. The composite displayed good reusability during four consecutive cycles of p-nitrophenol reduction with only a small loss of its reactivity, signifying its potential as an alternative to noble-metal catalysts.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"146 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140471355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Nanotechnological Applications of Multi-Efficient Zinc Oxide Nanoparticles-A Review","authors":"Azad Yadav, Shivani Narwal, Tamanna Deswal, Ankit Sindhu, Rahul Langyan, Narender Kumar, Sashi Yadav, Renu Bala, Rajesh Dhankhar","doi":"10.14233/ajchem.2024.28417","DOIUrl":"https://doi.org/10.14233/ajchem.2024.28417","url":null,"abstract":"Nanotechnology focuses on the development and application of materials with nanoscale dimensions. Zinc oxide nanoparticles are theones that have the potential to play an important role in different fields like antimicrobial, antioxidant, photocatalysis, agriculture, rubber, textile and environmental remediation because of their cost-effectiveness, easy to use and environmentally safe nature. ZnO nanoparticles have recently been the subject of research due to their broad band width and strong excitation-binding energy. ZnO nanoparticles are synthesized using a variety of physical, chemical and biological processes. Green techniques involving plants, fungi, bacteria and algae have evolved to avoid the rapid release of toxic substances and use of extreme environments for the physical and chemical production of ZnO nanoparticles. This review article aims to summarize the recent work on the formation of ZnO  nanoparticles and their applications in various fields. ","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"183 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140479114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of New Quinoline based Morpholine-1,2,3-Triazole Hybrids and their Cytotoxicity","authors":"Goli J. Rupa Sree, Dharmasothu Veeranna, J. Ramchander","doi":"10.14233/ajchem.2024.31238","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31238","url":null,"abstract":"Regioselective synthesis of a series of 1-aryl 1,2,3-triazoles-4-methoxy methyl-3-quinoline-2-morpholine employing click reaction is presented. Highly selective and efficient copper(I)-catalyzed 1,3-dipolar cycloaddition between 2-morpholinoquinoline-3-methyl propargyl ether and various aryl azides 5a-j yielded the title compounds 6a-j in 71% to 85%. The structure of all the novel 1,2,3-triazoles was characterized by 1H NMR, 13C NMR, IR and mass spectral analysis. The analogues were evaluated for their in vitro anticancer activity against MDA-MB-231 cell line. All the synthesized compounds were proven to have anticancer activity in comparison to reference drug doxorubicin. Especially, chloro and fluoro substituent compounds demonstrated potent activity with IC50 values of 17.20 ± 0.09 µM and 23.56 ± 0.09 µM, which proved their efficacy and could be further studied for the development of novel chemotherapeutics.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of a Series of Quinoline-Based New Chiral Reagent and its Application in Separation of Racemic Mexiletine followed by Liquid Chromatography and Confirmation of Results Using Molecular Modelling; A Complete Study","authors":"M. Solanki, S. Sehlangia, V. Talismanov, A. Damayanthi, M. Patel, S. Shrivastava, S. Alwera","doi":"10.14233/ajchem.2024.30926","DOIUrl":"https://doi.org/10.14233/ajchem.2024.30926","url":null,"abstract":"In present work, L-valine-based new chiral derivatives were prepared by introducing hydrophobic groups. The prepared derivatives were then used to prepare quinoline-based chiral reagents under mild amidation reaction and esterification reaction. Spectroscopic  techniques, such as HRMS, FT-IR, 1H NMR and CHNS analysis, were used to characterize the synthesized chiral reagents. The  synthesized series of reagents was then used to derivatize diastereomers of racemic mexiletine and these diastereomers were  separated using the RP-HPLC (a derivatization approach of enantioseparation). The mobile phase for the analysis consisted of  acetonitrile and buffer solution. The impact of modifying mobile phase pH and concentrations was optimized to separate  diastereomers. The lowest energy-minimize optimized diastereomer structures, as well as the design of separation processes and  elution orders, were also developed through the use of density functional theory (DFT) calculations. Following ICH guidelines, the limits of detection (0.161 ng/mL) and quantification (0.483 ng/mL) were determined, together with the retention-factor (k), selectivity-factor  (α), resolution-factor (RS) and technique validation. ","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"125 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}