{"title":"Harnessing Computational Modeling for Efficient Drug Design Strategies","authors":"Kuldeep Singh, Bharat Bhushan, Akhalesh Kumar Dube, Anit Kumar Jha, Ketki Rani, Akhilesh Kumar Mishra, Prateek Porwal","doi":"10.2174/0115701786267754231114064015","DOIUrl":"https://doi.org/10.2174/0115701786267754231114064015","url":null,"abstract":": Computational modeling has become a crucial tool in drug design, offering efficiency and cost-effectiveness. This paper discusses the various computational modeling techniques used in drug design and their role in enabling efficient drug discovery strategies. Molecular docking predicts the binding affinity of a small molecule to a target protein, allowing the researchers to identify potential lead compounds and optimize their interactions. Molecular dynamics simulations provide insights into protein-ligand complexes, enabling the exploration of conformational changes, binding free energies, and fundamental protein-ligand interactions. Integrating computational modeling with machine learning algorithms, such as QSAR modeling and virtual screening, enables the prediction of compound properties and prioritizes potential drug candidates. High-performance computing resources and advanced algorithms are essential for accelerating drug design workflows, with parallel computing, cloud computing, and GPU acceleration reducing computational time. The paper also addresses the challenges and limitations of computational modeling in drug design, such as the accuracy of scoring functions, protein flexibility representation, and validation of predictive models. It emphasizes the need for experimental validation and iterative refinement of computational predictions to ensure the reliability and efficacy of designed drugs.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"81 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139664594","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":"Thiourea-Ammonium Chloride Mediated Knoevenagel Condensation as an Intermediate in the Synthesis of Pyrimidine Scaffolds under Solvent-free Condition","authors":"A. M. Rayate, M. R. Gaware","doi":"10.2174/0115701786286587240130114029","DOIUrl":"https://doi.org/10.2174/0115701786286587240130114029","url":null,"abstract":": In this paper, we have reported solvent solvent-free method for Knoevenagel condensation reaction of various aldehydes with active methylene compounds using thiourea and ammonium chloride. The developed method demonstrated high efficiency in the formation of C-C bond. The reaction proceeds smoothly under mild and solvent-free conditions and the products obtained are in excellent yield in very short duration. This method is applicable to a wide range of aldehydes with active methylene compounds.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139664992","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":"Treatment of Reactive Orange 16 Dye-Bearing Wastewater by Electro-Fenton Process with Stainless-Steel Electrodes: Statistical Optimization and Operational Analysis","authors":"Imran Ahmad, Debolina Basu","doi":"10.2174/0115701786294340240129071221","DOIUrl":"https://doi.org/10.2174/0115701786294340240129071221","url":null,"abstract":": In the current work, the Electro-Fenton (EF) based Reactive Orange 16 (RO16) dye treatment was studied and compared with central composite (CC) and Taguchi design (TD) statistical optimization tools. Color removal (RC) and COD decay (RCOD) were chosen responses for the effect of pH (A), electrolysis time (B), initial dye concentration (C), and current density (D). The facecentred CC design and L16 orthogonal array were used in the experimental procedures. At optimal conditions, the coefficient of determination (R2) values of 0.99 for CC and 0.97 for TD suggest statistical significance and good model agreement. The results of the ANOVA and Prob. > F values supported the model’s successful experimental data fitting. Taguchi method was found as an appropriate methodology for parameter percentage contributions with fewer experimental runs. Moreover, the S/N ratio charts proved to be a successful CC design replacement. The current density and pH were found to be the most important factors for the EF process. A higher biodegradability (BOD5/COD) and minimum iron concentration (0.45 mg/L) in the effluent sludge demonstrated good environmental disposal suitability. In the last, the effect of various inhibitors/scavengers (SO4 −2, PO4 −3, EDTA, etc.) on the EF process performance was also carried out.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"38 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139664680","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":"Facile Synthesis and Antitumor Activity of o-Iodoaromatic Ether","authors":"Xiaoxia Mao, Yuying Zhang, Keyang Wang, Guiqin Zhao, Dejun Zhou, Zhengguo Cui","doi":"10.2174/0115701786262911240121105544","DOIUrl":"https://doi.org/10.2174/0115701786262911240121105544","url":null,"abstract":": In this study, an efficient method for the synthesis of one type of aromatic ether was introduced, and its antitumor activity was investigated. Specifically, (diacetoxyiodo)arene was prepared from 2-methyliodobenzene and used to oxidize the 4-nitrophenol to give the aromatic ether. Our study further found that aromatic ether has a strong apoptotic effect on U937 monocytes, suggesting that it might be developed as a new drug for the treatment of acute myeloid leukemia.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"191 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139580403","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":"Novel Amide Functionalized Trifluoromethyl thieno[2,3-b]pyridine Derivatives: Anti-cancer Activity and Molecular Docking Studies","authors":"Sailu Betala, Naveen Puram, Udayasri Bhanothu","doi":"10.2174/0115701786272432231211100408","DOIUrl":"https://doi.org/10.2174/0115701786272432231211100408","url":null,"abstract":": Our primary research objective is to create and formulate small ring heterocycles with enhanced biological efficacy. Amide functionalized trifluoromethyl thieno[2,3-b]pyridine derivatives as a series were prepared starting from reaction between 1,3 di-ketone and thiocyanoacetamide and obtained pyridine 3. Compound 3 reacts with bromoethyl acetate and obtained compound 4, further compound 4 on reaction with diverse substituted aromatic and aliphatic amines to get amide derivatives 5a-d, 6a-d and 7a-h. All the final compounds evaluated for anti cancer activity against four human cancer cell lines such as ‘HeLa - Cervical cancer (CCL-2); COLO 205- Colon cancer (CCL- 222); HepG2 - Liver cancer (HB-8065); MCF7 - Breast cancer (HTB-22)’ and promising compounds 7d, 7e and 7f have been identified. For compounds 7d, 7e and 7f molecular docking interactions have been identified. background: heterocyclic chemistry method: Synthesis result: we synthesized amide functionalized thienopyridone derivates and evaluated for anticancer activity four human cancer cell lines","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"323 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579571","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":"1,2,4-Triazole-conjugated Fluoroquinolones as Potential Candidates for New Antibacterial Agents","authors":"Yildiz Uygun Cebeci, Sengul Alpay Karaoglu","doi":"10.2174/0115701786270260231215101046","DOIUrl":"https://doi.org/10.2174/0115701786270260231215101046","url":null,"abstract":": In this study, synthesis of 1,2,4 triazo1e-fluoroquino1one hybrid compounds was rea1ized. 7a-d hybrid compound was obtained as a result of mannich reaction with 6a-b triazole compounds norfloxacin and ciprofloxacin. 1H-NMR, 13C-NMR, Mass Spectrometry and Elemental Analysis confirmed the structures of a11 synthesized compounds. The antimicrobia1 activities of a11 compounds were investigated, and it was observed that 7a-d compounds, which are mannich bases, showed excellent activity.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"66 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579690","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":"Insight into the Various Approaches Undertaken for the Synthesis of Quinoline Hybrids Imparting Diverse Therapeutic Activities","authors":"Ruchi Sharma, Chandana Majee, Rupa Mazumder, Avijit Mazumder, Swarupanjali Padhi, Akshay Kumar","doi":"10.2174/0115701786279549231228125141","DOIUrl":"https://doi.org/10.2174/0115701786279549231228125141","url":null,"abstract":": Quinoline is one of the promising and prominent biologically active N-based heterocyclic compounds. This review paper aims to discuss the synthetic approaches, summarized from various research articles on the preparation of quinoline derivatives intended for different therapeutic activities like antifungal activity, anticancer activity, anticonvulsant activity, antitubercular activity, antimalarial activity, anti-Alzheimer activity and so on. The comprehensive study complies with all related publications and trademark publications demonstrating the synthesis and biological aspects of quinoline derivatives. Various types of quinoline hybrids were synthesized and treated for therapeutic activity, including anticancer, antitubercular, anti-Alzheimer, antioxidant, and antifungal activity, which have been analyzed. Quinoline is a planner hetero-aromatic compound with the chemical formula C9H7N. Several wellknown synthetic routes to the quinoline skeleton include Friedlander synthesis, Knorr quinoline synthesis, and Skraup reaction. Researchers may use other techniques or alter current strategies to reach their objectives, depending on what exact structure and therapeutic action they are investigating. The availability of starting materials, reaction conditions, scalability, desired regioselectivity, and functionalization of the quinoline core all have a role in the choice of synthetic method. This review covers the latest literature and knowledge on the synthetic procedures for numerous quinoline and its derivatives and their biological and pharmacological application.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"39 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579687","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}
Jingwen Ji, Zafar Iqbal, Liuyan Li, Jian Sun, Pengjuan Zhou, Lijuan Zhai, Lili He, Dong Tang, Jinbo Ji, Haikang Yang, Zhixiang Yang
{"title":"Synthesis of N1-caffeoyl-N10-dihydrocaffeoylspermidine (Scotanamine D)","authors":"Jingwen Ji, Zafar Iqbal, Liuyan Li, Jian Sun, Pengjuan Zhou, Lijuan Zhai, Lili He, Dong Tang, Jinbo Ji, Haikang Yang, Zhixiang Yang","doi":"10.2174/0115701786282079231229050431","DOIUrl":"https://doi.org/10.2174/0115701786282079231229050431","url":null,"abstract":": N1-caffeoyl-N10-dihydrocaffeoylspermidine (Scotanamine D), a spermidine alkaloid isolated from various plants, is a medicinally valuable natural product. Recent studies have pointed out several health benefits of this compound. However, its synthetic procedures are still not described in the literature. We report the synthesis of this compound following two different schemes comprising multiple steps with excellent overall yields, which are 57% and 81%, respectively. These two synthetic schemes, which use commercially available and cheaper starting materials, can facilitate the large-scale manufacturing of Scotanamine D.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"4 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579689","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}
Roshanak Hariri, Aida Iraji, Somayeh Mojtabavi, Mina Saeedi, Mohammad Ali Faramarzi, Mohsen Amini, Tahmineh Akbarzadeh
{"title":"Synthesis of New Glucose-containing 5-Arylisoxazoles and their Enzyme Inhibitory Activity","authors":"Roshanak Hariri, Aida Iraji, Somayeh Mojtabavi, Mina Saeedi, Mohammad Ali Faramarzi, Mohsen Amini, Tahmineh Akbarzadeh","doi":"10.2174/0115701786283334231228104931","DOIUrl":"https://doi.org/10.2174/0115701786283334231228104931","url":null,"abstract":": Carbohydrates are an important group of biomolecules that have received special attention due to their significant role in the design and synthesis of new bioactive compounds. In this study, a new class of 5-arylisoxazole-glucose hybrids was designed and synthesized for evaluation of their inhibitory effects on α-glucosidase, α-amylase, and tyrosinase. The target compounds depicted selective α-glucosidase inhibitory activity over α-amylase, which is an important factor in reducing probable gastrointestinal problems in the treatment of type 2 diabetes. In this respect, compound 9a, possessing the phenylisoxazole group, was found to be the most potent α-glucosidase inhibitor (IC50 = 292.2 ± 0.1 µM) compared to acarbose (IC50 = 750.2 ± 0.1 µM) as the positive control. All compounds were also evaluated for their anti-tyrosinase effect, and among them, compound 9j, containing a fluoroaryl moiety, showed potent activity (IC50 = 50.1 ± 6.3 µM) in comparison to kojic acid (IC50 = 23.6 ± 2.6 µM). Also, docking studies were performed to investigate the probable mode of action, which indicated the construction of important H-bonding interactions between the sugar moiety and the enzyme’s active sites. According to the results, hybrids containing heterocycles attached to glucose can be used to inhibit α-glucosidase.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"30 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579701","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}
Fayezeh Yousefnejad, Mohammad Hossein Sayahi, Ali Mazzam, Fatemeh Gholami, Nader Tanideh, Cambyz Irajie, Helia Tayebi, Fatemeh Rasekh, Bagher Larijani, Maliheh Barazandeh Tehrani, Mohammad Mahdavi, Aida Iraji
{"title":"Structure-based Drug Design of New Cinnamic Acid Derivatives as Tyrosinase Inhibitors","authors":"Fayezeh Yousefnejad, Mohammad Hossein Sayahi, Ali Mazzam, Fatemeh Gholami, Nader Tanideh, Cambyz Irajie, Helia Tayebi, Fatemeh Rasekh, Bagher Larijani, Maliheh Barazandeh Tehrani, Mohammad Mahdavi, Aida Iraji","doi":"10.2174/0115701786263337231227113513","DOIUrl":"https://doi.org/10.2174/0115701786263337231227113513","url":null,"abstract":": Tyrosinase is a critical enzyme responsible for pigmentation disorders, and tyrosinase inhibition is an established strategy to treat hyperpigmentation. In the current study, cinnamic acidbased derivatives were designed and synthesized. All synthesized compounds were confirmed using IR, 1 HNMR, 13CNMR, and CNH analysis. The inhibitory potencies of all derivatives against tyrosinase were determined, and it was shown that 5m bearing para-chloro moiety exhibits an IC50 value of 77.62 µmol/L. Analysis of enzyme kinetic studies revealed that 5m is an uncompetitive inhibitor. In silico studies against tyrosinase predicted possible binding mode in the pocket such that 5m formed critical interactions with both Cu co-factors within the binding site. This study presents the potential of aryl-substituted cinnamic acids that can benefit various cosmetic formulations as depigmentation agents.","PeriodicalId":18116,"journal":{"name":"Letters in Organic Chemistry","volume":"38 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139580287","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}