Evolution of Natural Product Scaffolds by Acyl- and Arylnitroso Hetero-Diels−Alder Reactions: New Chemistry on Piperine
作者:Viktor Krchňák、Katherine R. Waring、Bruce C. Noll、Ute Moellmann、Hans-Martin Dahse、Marvin J. Miller
DOI:10.1021/jo8004827
日期:2008.6.1
Piperine, a naturalproduct containing a conjugated diene, was reacted with polymer-supported acyl- and arylnitroso dienophiles. The reactions with arylnitroso dienophiles were also carried out in solution. The oxazine rings formed by the corresponding hetero-Diels−Alder reactions were further transformed and novel acyclic as well as heterocyclic derivatives including pyrroles and quinoxalinones were