Detection of a New Piperideine Alkaloid in the Pygidial Glands of Some<i>Stenus</i>Beetles
作者:Isabel Wittmann、Andreas Schierling、Konrad Dettner、Matthias Göhl、Jürgen Schmidt、Karlheinz Seifert
DOI:10.1002/cbdv.201400391
日期:2015.9
in the pygidial gland secretion of Stenus cicindeloides. The three metabolites follow the same biosynthetic pathway, where the N-heterocyclic ring is derived from L-lysine and the side chain from L-isoleucine. The different alkaloids are finally obtained by few modifications of shared precursor molecules, such as 2,3,4,5-tetrahydro-5-(2-methylbutylidene)pyridine (1). This piperideine alkaloid was synthesized
Stenus属的甲虫在其腺体中产生并储存生物活性生物碱,如stenusine(3),3-(2-甲基丁-1-烯基)吡啶(4)和cicindeloine(5),以保护自己免受捕食和微生物侵扰。Stenusine(3),3-(2-甲基丁-1-烯基)吡啶(4)和cicindeloine(5)的生物合成以前分别在Stenus bimaculatus,Stenus similis和Stenus solutus中进行过研究。哌啶碱生物蝉联素(5)也作为Stenus cicindeloides的胸腺分泌物中的主要化合物存在。这三种代谢物遵循相同的生物合成途径,其中N杂环来自L-赖氨酸,侧链来自L-异亮氨酸。最终,只需对共享的前体分子进行少量修饰即可获得不同的生物碱,例如2,3,4,5-四氢-5-(2-甲基丁烯)吡啶(1)。该合成的哌啶碱生物碱通过GC / MS和GC在手性Stenus similis,Stenus