{"title":"Caractérisation de la l-thréo-β-hydroxyleucine à partir de Deutzia gracilis","authors":"J. Jadot, J. Casimir, F. Alderweireldt","doi":"10.1016/0006-3002(63)90911-9","DOIUrl":null,"url":null,"abstract":"<div><p><span>l</span>-<em>threo</em>-β-Hydroxyleucine has been isolated from <em>Deutzia gracilis</em> by ion-exchange resin chromatography, and by preparative paper chromatography. The substance is reduced to leucine by hydroiodic acid and offers the characteristic reaction of β-hydroxyamino acids with periodic acid. Alkaline decomposition confirms the β position of the alcohol function. The natural substance and the <span>dl</span>-<em>threo</em>-β-hydroxyleucine are inseparable by paper chromatography, and the study of their nuclear-magnetic-resonance spectra brings supplementary arguments in favour of the <em>threo</em> form. The natural substance has the same infrared spectrum as synthetic <em>threo</em>-β-hydroxyleucine.</p></div>","PeriodicalId":94301,"journal":{"name":"Biochimica et biophysica acta","volume":"78 3","pages":"Pages 500-504"},"PeriodicalIF":0.0000,"publicationDate":"1963-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0006-3002(63)90911-9","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochimica et biophysica acta","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0006300263909119","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
l-threo-β-Hydroxyleucine has been isolated from Deutzia gracilis by ion-exchange resin chromatography, and by preparative paper chromatography. The substance is reduced to leucine by hydroiodic acid and offers the characteristic reaction of β-hydroxyamino acids with periodic acid. Alkaline decomposition confirms the β position of the alcohol function. The natural substance and the dl-threo-β-hydroxyleucine are inseparable by paper chromatography, and the study of their nuclear-magnetic-resonance spectra brings supplementary arguments in favour of the threo form. The natural substance has the same infrared spectrum as synthetic threo-β-hydroxyleucine.
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