Syntheses of Lambertellols and Their Stable Analogues; Investigation of the Real Active Species in the Mycoparasitism by <i>Lambertella</i> Species
作者:Masahiro Nomiya、Takanori Murakami、Noboru Takada、Toshikatsu Okuno、Yukio Harada、Masaru Hashimoto
DOI:10.1021/jo8005478
日期:2008.7.1
as key steps. The synthesis also provided all diastereomers of 1-hydrolambertellols 17−19 and 25. Chiral resolution made the optically active forms available, which enabled the investigation of the real active species in the mycoparasitism by Lambertella species against Monilinia fructigena. These experiments suggested that lambertellin (3) is responsible for this phenomenon. Chemically labile 1 and
合成的兰伯特醇A(1)和B(2),从霉菌兰伯特氏菌属物种中分离出来。合成的关键步骤是醛12和14的分子内羟醛型环化和1-羟基lambertellols的位点特异性氧化。合成还提供了1- hydrolambertellols所有非对映17 - 19和25。手性拆分使旋光活性形式变得可用,这使得朗伯氏菌对果蝇莫尼尼亚菌能够研究真菌副寄生虫中的真正活性物种。这些实验表明,兰伯特林(3)对此现象负责。在生物测定过程中,化学不稳定的1和2应转换为3。寄生虫可能以易于扩散的形式排泄1和2,然后转化为3以抑制宿主M. fructigena。寄生虫可能已经获得了这种“药物输送系统”机制,作为一种进化上的增强。