Continued Exploration of Trifunctional Alkyl 4-Chloro-2-diazo-3-oxobutanoates: Streamlined Entry into [1,2,3]Triazolo[5,1-c][1,4]benzoxazines and [1,2,3]Triazolo[5,1-c][1,4]benzoxazepines
作者:Dmitry Dar’in、Mikhail Krasavin、Anton V. Budeev、Grigory Kantin
DOI:10.1055/a-1348-9031
日期:2021.6
o-aminophenols followed by deprotection provided a convenient entry into [1,2,3]triazolo[5,1-c][1,4]benzoxazines, which are of high medicinal importance, as documented in the literature. The same approach applied to N-protected substituted o-(aminomethyl)phenols afforded [1,2,3]triazolo[5,1-c][1,4]benzoxazepines, which are practically unexplored compounds from a medicinal chemistry perspective. The syntheses
进一步探索先前引入的4-氯-2-重氮-3-氧代丁酸烷基酯在与N保护的取代的邻氨基苯酚反应后进行脱保护的三功能特征,这为[1,2,3] triazolo [5, 1-c] [1,4]苯并恶嗪具有很高的医学重要性,如文献所记载。将相同的方法应用于N保护的取代邻-(氨基甲基)苯酚可提供[1,2,3]三唑并[5,1-c] [1,4]苯并x氮平,从医药化学的角度来看,它们实际上是未经探索的化合物。合成从苯酚的SN2型烷基化开始。除去保护基会触发亚胺的形成,然后合成Wolff 1,2,3-三唑。