A facile synthesis of benzo[c]phenanthridine alkaloids: oxynitidine and oxysanguinarine using lithiated toluamide–benzonitrile cycloaddition
作者:Thanh Nguyen Le、Seong Gyoung Gang、Won-Jea Cho
DOI:10.1016/j.tetlet.2004.02.031
日期:2004.3
Benzo[c]phenanthridine alkaloids oxynitidine and oxysanguinarine were synthesized from easily available starting benzonitrile 5 and toluamide 6 using toluamide–benzonitrile cycloaddition reaction in six steps. This method is so highly efficient that it could be a more useful way for preparing fully aromatized benzo[c]phenanthridine compounds.
使用甲苯酰胺-苄腈环加成反应,通过六个步骤,由易于获得的起始苯甲腈5和甲苯酰胺6合成苯并[ c ]菲啶生物碱氧硝啶和氧山桂碱。该方法是如此高效,以至于它是制备完全芳构化的苯并[ c ]菲啶化合物的更有用的方法。