Biosynthetic studies on adaline and adalinine, two alkaloids from ladybird beetles (Coleoptera: Coccinellidae)
作者:Pascal Laurent、Benjamine Lebrun、Jean-Claude Braekman、Désiré Daloze、Jacques M Pasteels
DOI:10.1016/s0040-4020(01)00207-1
日期:2001.4
adaline. The labelling pattern thus obtained indicated that the alkaloid is biosynthesized via a polyacetate pathway. Moreover, feeding A. bipunctata adults with (−)-[10,10,11,11,12,12,13,13,14,14,14-2H11]adaline·HCl afforded (−)-[7,7,8,8,9,9,10,10,11,11,11-2H11]adalinine, demonstrating a biogenetic relationship between the two alkaloids. Possible mechanisms for this conversion are discussed. Finally
所述homotropane的生物合成生物碱( - ) - Adaline的在coccinellid甲虫Adalia蚕已经研究通过掺入实验用[1- 14 C]和[2- 14 C]乙酸酯。开发了降解方案,其选择性地提供了含有adaline的羰基碳原子的苯甲酸。如此获得的标记模式表明生物碱是通过多乙酸盐途径生物合成的。此外,进料A.蚕成人( - ) - [10,10,11,11,12,12,13,13,14,14,14- 2 ħ 11 ] Adaline的·HCl的,得到( - ) - [7, 7,8,8,9,9,10,10,11,11,11- 2 H 11] adalinine,证明了两种生物碱之间的生物遗传关系。讨论了这种转换的可能机制。最后,设计用于获得(±)-6-丙酮基-2-戊基-1-哌啶的合成方案没有产生目标化合物,而是以中等产率提供了(±)-adaline。这一出乎意料的结果为这一哌