Stereoselective synthesis of original spirolactams displaying promising folded structures
作者:Guilhem Chaubet、Thibault Coursindel、Xavier Morelli、Stéphane Betzi、Philippe Roche、Yannick Guari、Aurélien Lebrun、Loïc Toupet、Yves Collette、Isabelle Parrot、Jean Martinez
DOI:10.1039/c3ob40643a
日期:——
Access to diastereoisomeric forms of original spirolactam frameworks and investigation of their folded potentials are depicted here. Taking advantage of a stereoselective ring-contraction reaction, the Transannular Rearrangement of Activated Lactams (TRAL), followed by two unprecedented tandem reactions, we describe here an efficient access to elegant spirocyclic scaffolds. After dimerization, NMR
此处介绍了获得原始螺内酰胺骨架的非对映异构形式和对其折叠潜力的研究。利用立体选择性环收缩反应,活化内酰胺的跨环重排(TRAL)以及随后两个空前的串联反应,我们在这里描述了有效利用优雅的螺环骨架的方法。二聚化后,NMR分析,圆二色性,SEM和分子模型表明,存在一个能够折叠并表现为PPII螺旋结构(一个常见但被忽略的肽类二级结构)的吸引人的建筑物。