Stereoselectivity in the cyclisation of photoinduced electron transfer (PET) generated cyclic (α -amino radicals: First general stereoselective entry to 1-azabicyclo (m:n:o) alkane systems
摘要:
Stereoselectivity in the intramolecular cyclisation of PET-generated cyclic alpha-amino radicals and its application to the synthesis of 1-azabicyclo (m:n:o) alkane systems is reported.
Cascade Iminium Ion Reactions for the Facile Synthesis of Quinolizidines. Concise Syntheses of (±)-Epilupinine and (−)-Epimyrtine
作者:Shawn M. Amorde、Andrew S. Judd、Stephen F. Martin
DOI:10.1021/ol050544b
日期:2005.5.1
Several novel cascade processes have been designed and developed that involve sequential reactions of imines and iminium ions to form substituted quinolizidine ring systems in a single step from simple and readily available starting materials. The utility and promise of these cascade reactions is evident from their application to extraordinarily concise syntheses of the representative quinolizidine alkaloids epilupinine and (-)-epimyrtine.