{"title":"Synthesis of stagonosporyne G from (−)-D-quinic acid","authors":"Kentaro Koyama, Hironori Okamura, Hirosato Takikawa","doi":"10.1016/j.tet.2025.134488","DOIUrl":null,"url":null,"abstract":"<div><div>Stagonosporyne G, a highly oxygenated cyclohexanoid isolated from the wheat pathogen <em>Parastagonospora nodorum</em> SN15, shows herbicidal activity against <em>Arabidopsos thaliana</em> and may contribute to the virulence of <em>P. nodorum</em> SN15 against wheat species. Herein, we report the first synthesis of stagonosporyne G from commercially available D-(−)-quinic acid via diastereoselective 1,4-addition of alkynylaluminum species, Rubottom oxidation, and Evans reduction of α-hydroxyenone as the key steps. The absolute configuration of the natural stagonosporyne G was confirmed by comparing the optical rotations of synthetic and natural compounds.</div></div>","PeriodicalId":437,"journal":{"name":"Tetrahedron","volume":"173 ","pages":"Article 134488"},"PeriodicalIF":2.1000,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tetrahedron","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0040402025000444","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
引用次数: 0
Abstract
Stagonosporyne G, a highly oxygenated cyclohexanoid isolated from the wheat pathogen Parastagonospora nodorum SN15, shows herbicidal activity against Arabidopsos thaliana and may contribute to the virulence of P. nodorum SN15 against wheat species. Herein, we report the first synthesis of stagonosporyne G from commercially available D-(−)-quinic acid via diastereoselective 1,4-addition of alkynylaluminum species, Rubottom oxidation, and Evans reduction of α-hydroxyenone as the key steps. The absolute configuration of the natural stagonosporyne G was confirmed by comparing the optical rotations of synthetic and natural compounds.
期刊介绍:
Tetrahedron publishes full accounts of research having outstanding significance in the broad field of organic chemistry and its related disciplines, such as organic materials and bio-organic chemistry.
Regular papers in Tetrahedron are expected to represent detailed accounts of an original study having substantially greater scope and details than that found in a communication, as published in Tetrahedron Letters.
Tetrahedron also publishes thematic collections of papers as special issues and ''Reports'', commissioned in-depth reviews providing a comprehensive overview of a research area.