{"title":"以抗坏血酸棕榈酸钠盐(Asp-Na)为绿色助催化剂,微波辅助合成左旋葡聚糖三唑糖缀合物","authors":"Nishant Pandey , Pratibha Dwivedi , Alisha , Bhuwan B. Mishra","doi":"10.1016/j.carres.2025.109511","DOIUrl":null,"url":null,"abstract":"<div><div>Ascorbyl palmitate sodium salt (Asp-Na) <strong>2</strong> has been found to be a highly effective co-catalyst in copper catalyzed azide-alkyne cycloaddition (CuAAC) reactions under microwave (MW) condition. This co-catalyst provides a more cost-efficient option compared to sodium ascorbate by reducing the stoichiometric amount of ascorbic acid required for the CuAAC reaction. With its palmitate side chain, Asp-Na <strong>2</strong> acts as a surfactant by improving the solubility of substrates, particularly the lipophilic compounds. Notably, it can be obtained in high purity by semi-synthesis from non-edible oils, aligning with the sustainable practices. Application of <strong>2</strong> in CuAAC reaction of levoglucosan based terminal alkyne <strong>(3)</strong> and <em>azido</em>-sugars <strong>(4)</strong> furnished the corresponding triazolyl glycoconjugates <strong>(5)</strong> in yields ranging between 70 and 90 %.</div></div>","PeriodicalId":9415,"journal":{"name":"Carbohydrate Research","volume":"553 ","pages":"Article 109511"},"PeriodicalIF":2.4000,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microwave-assisted click synthesis of levoglucosan triazolyl glycoconjugates using ascorbyl palmitate sodium salt (Asp-Na) as a green Co-catalyst\",\"authors\":\"Nishant Pandey , Pratibha Dwivedi , Alisha , Bhuwan B. Mishra\",\"doi\":\"10.1016/j.carres.2025.109511\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Ascorbyl palmitate sodium salt (Asp-Na) <strong>2</strong> has been found to be a highly effective co-catalyst in copper catalyzed azide-alkyne cycloaddition (CuAAC) reactions under microwave (MW) condition. This co-catalyst provides a more cost-efficient option compared to sodium ascorbate by reducing the stoichiometric amount of ascorbic acid required for the CuAAC reaction. With its palmitate side chain, Asp-Na <strong>2</strong> acts as a surfactant by improving the solubility of substrates, particularly the lipophilic compounds. Notably, it can be obtained in high purity by semi-synthesis from non-edible oils, aligning with the sustainable practices. Application of <strong>2</strong> in CuAAC reaction of levoglucosan based terminal alkyne <strong>(3)</strong> and <em>azido</em>-sugars <strong>(4)</strong> furnished the corresponding triazolyl glycoconjugates <strong>(5)</strong> in yields ranging between 70 and 90 %.</div></div>\",\"PeriodicalId\":9415,\"journal\":{\"name\":\"Carbohydrate Research\",\"volume\":\"553 \",\"pages\":\"Article 109511\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2025-05-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Carbohydrate Research\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0008621525001375\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"BIOCHEMISTRY & MOLECULAR BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbohydrate Research","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0008621525001375","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
Microwave-assisted click synthesis of levoglucosan triazolyl glycoconjugates using ascorbyl palmitate sodium salt (Asp-Na) as a green Co-catalyst
Ascorbyl palmitate sodium salt (Asp-Na) 2 has been found to be a highly effective co-catalyst in copper catalyzed azide-alkyne cycloaddition (CuAAC) reactions under microwave (MW) condition. This co-catalyst provides a more cost-efficient option compared to sodium ascorbate by reducing the stoichiometric amount of ascorbic acid required for the CuAAC reaction. With its palmitate side chain, Asp-Na 2 acts as a surfactant by improving the solubility of substrates, particularly the lipophilic compounds. Notably, it can be obtained in high purity by semi-synthesis from non-edible oils, aligning with the sustainable practices. Application of 2 in CuAAC reaction of levoglucosan based terminal alkyne (3) and azido-sugars (4) furnished the corresponding triazolyl glycoconjugates (5) in yields ranging between 70 and 90 %.
期刊介绍:
Carbohydrate Research publishes reports of original research in the following areas of carbohydrate science: action of enzymes, analytical chemistry, biochemistry (biosynthesis, degradation, structural and functional biochemistry, conformation, molecular recognition, enzyme mechanisms, carbohydrate-processing enzymes, including glycosidases and glycosyltransferases), chemical synthesis, isolation of natural products, physicochemical studies, reactions and their mechanisms, the study of structures and stereochemistry, and technological aspects.
Papers on polysaccharides should have a "molecular" component; that is a paper on new or modified polysaccharides should include structural information and characterization in addition to the usual studies of rheological properties and the like. A paper on a new, naturally occurring polysaccharide should include structural information, defining monosaccharide components and linkage sequence.
Papers devoted wholly or partly to X-ray crystallographic studies, or to computational aspects (molecular mechanics or molecular orbital calculations, simulations via molecular dynamics), will be considered if they meet certain criteria. For computational papers the requirements are that the methods used be specified in sufficient detail to permit replication of the results, and that the conclusions be shown to have relevance to experimental observations - the authors'' own data or data from the literature. Specific directions for the presentation of X-ray data are given below under Results and "discussion".