Synthesis of Thiadiazolylaminoglycosides Through Ring Contraction of Triazinoglycosides Induced by [TBA-Ox]
作者:Vincent Kikelj、Karine Julienne、Thibaut Chalopin、Sébastien G. Gouin、Michel Evain、David Deniaud
DOI:10.1002/jhet.2232
日期:2015.7
A new synthetic route to thiadiazolylaminoglycosides, by a ring expansion/ring contraction sequence of glycosyl triazines, has been developed. Two potential mechanisms of this oxidative ring contraction using [TBA‐Ox] are discussed. The more plausible involves formation of an oxatriazepane intermediate followed by loss of formic acid, ring opening, and subsequent recyclization.
通过糖基三嗪的环扩展/环收缩序列,已经开发了一种新的合成途径,用于噻二唑基氨基糖苷。讨论了使用[TBA-Ox]氧化环收缩的两种潜在机理。更有可能的是涉及草酸氮杂中间体的形成,随后是甲酸的损失,开环和随后的再循环。