Reactions of sugar thio-orthoesters: Nucleophilic substitution of an arylthio group during zemplén deacylation
作者:Leon V. Backinowsky、Narguiz E. Byramova、Yury E. Tsvetkov、Vitali I. Betaneli
DOI:10.1016/s0008-6215(00)80813-7
日期:1981.12
benzoylated sugar 1,2-thio-orthoesters bearing an S -aromatic residue with methanolic sodium methoxide is accompanied by inter- and intra-molecular nucleophilic substitution of the arylthio group with formation of the corresponding bi- and tri-cyclic orthoesters. Stereochemical aspects and a possible mechanism for this reaction are discussed. Free arylthio-orthoesters were obtained by performing the deacylation
摘要带有S-芳族残基的乙酰化和苯甲酰化糖1,2-硫代原酸酯与甲醇钠的甲醇脱酰反应伴随着芳硫基的分子间和分子内亲核取代,并形成了相应的双环和三环原酸酯。讨论了立体化学方面和该反应的可能机理。通过用甲醇甲醇钠在吡啶中进行脱酰基反应,获得游离的芳硫基原酸酯。