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 natural product 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
将含有共轭二烯的天然产物胡椒碱与聚合物负载的酰基和芳基亚硝基二烯亲和物反应。与芳基亚硝基亲二烯体的反应也在溶液中进行。由相应的杂Diels-Alder反应形成的恶嗪环被进一步转化,并制备了包括吡咯和喹喔啉酮在内的新型无环以及杂环衍生物。