Stereoselective synthesis of <i>trans</i>-fused iridoid lactones and their identification in the parasitoid wasp <i>Alloxysta victrix</i>, Part II: Iridomyrmecins
作者:Robert Hilgraf、Nicole Zimmermann、Lutz Lehmann、Armin Tröger、Wittko Francke
DOI:10.3762/bjoc.8.141
日期:——
Following our earlier approach to the synthesis of dihydronepetalactones, all eight stereoisomers of trans-fused iridomyrmecins were synthesized starting from the enantiomers of limonene. Combined gas chromatography and mass spectrometry including enantioselective gas chromatography revealed that volatiles released by the endohyperparasitoid wasp Alloxysta victrix contain (4S,4aR,7S,7aR)-iridomyrmecin
遵循我们早期合成二氢荆芥内酯的方法,从柠檬烯的对映异构体开始合成了所有八种反式融合鸢尾霉素的立体异构体。包括对映选择性气相色谱在内的气相色谱和质谱联用表明,内寄生蜂 Alloxysta victrix 释放的挥发物含有 95-97% ee 的 (4S,4aR,7S,7aR)-iridomyrmecin,立体化学纯 (4S,4aS,7R,7aS) -iridomyrmecin 作为次要成分。