Diastereoselective and convergent synthesis of both 11′-epimers of (−)-(2R,3R,6S)-carnavaline
作者:Axel Pahl、Jörg Oetting、Jens Holzkamp、Hartmut H. Meyer
DOI:10.1016/s0040-4020(97)00428-6
日期:1997.5
Enantio- and diastereoselective syntheses of both 11′-epimers of (−)-carnavaline 1 have been achieved. Since the configuration of the remote chiral centre in the C-12 side chain of naturally occurring (−)-carnavaline had been unknown and spectroscopic data were not conclusive, an assignment of the 11′S-epimer to the natural product by comparison of the melting points is discussed and complete spectroscopic
(-)-carnavaline 1的11'-受体的对映异构和非对映选择性合成均已实现。由于在天然存在的C-12侧链上的远程手性中心的构型( - ) - carnavaline已未知和光谱数据不是结论性的,则11'的分配š差向异构体的天然产物的比较讨论了熔点并给出了完整的光谱数据。