Stereoselective synthesis, natural occurrence and CB<sub>2</sub>receptor binding affinities of alkylamides from herbal medicines such as Echinacea sp.
作者:N. Matovic、A. Matthias、Jürg Gertsch、Stefan Raduner、K. M. Bone、R. P. Lehmann、J. J. DeVoss
DOI:10.1039/b615487e
日期:——
A divergent synthesis of (2E,4E,8E,10E)- and (2E,4E,8E,10Z)-N-isobutyldodeca-2,4,8,10-tetraenamides from pent-4-yn-1-ol allowed identification of the (2E,4E,8E,10Z)-isomer for the first time in Echinacea species. A short, stereoselective synthesis of the (2E,4E,8E,10Z)-isomer is also described which allowed further biological evaluation of this material, and the demonstration that this isomer does not occur in Spilanthes mauritiana as previously reported.
从戊-4-炔-1-醇出发进行(2E,4E,8E,10E)-和(2E,4E,8E,10Z)-N-异丁基十二碳-2,4,8,10-四烯酰胺的衍生气相合成,使得首次在紫锥菊(Echinacea)物种中鉴定出(2E,4E,8E,10Z)异构体。本文还描述了(2E,4E,8E,10Z)异构体的选择性合成路线,该合成路线简短且具有立体选择性,使得能够对这种物质进行进一步的生物学评价,并证明了这种异构体不像先前报道的那样存在于斑鸠菊(Spilanthes mauritiana)中。