Stereospecificity of an Enzymatic Monoene 1,4-Dehydrogenation Reaction: Conversion of (<i>Z</i>)-11-Tetradecenoic Acid into (<i>E</i>,<i>E</i>)-10,12-Tetradecadienoic Acid
作者:Sergio Rodríguez、Pere Clapés、Francisco Camps、Gemma Fabriàs
DOI:10.1021/jo0109927
日期:2002.4.1
transformation of (Z)-11-tetradecenoic acid into (E,E)-10,12-tetradecadienoic acid, involved in the sex pheromone biosynthesis of the moth Spodoptera littoralis. The investigation was carried out using the labeled substrates (R)-[10-(2)H]- and (S)-[10-(2)H]-tridecanoic acids ((R)-2 and (S)-2, respectively) and (R)-[2,2,3,3,13-(2)H(5)]- and (S)-[2,2,3,3,13-(2)H(5)]-tetradecanoic acids ((R)-1 and (S)-1, respectively)
在本文中,我们报告了酶促1,4-脱氢反应的第一个立体化学研究,即将(Z)-11-十四碳烯酸转化为(E,E)-10,12-十四碳二烯酸,这涉及到飞蛾斜纹夜蛾的性信息素生物合成。使用标记的底物(R)-[10-(2)H]-和(S)-[10-(2)H]-十三烷酸((R)-2和(S)-2 )和(R)-[2,2,3,3,13-(2)H(5)]-和(S)-[2,2,3,3,13-(2)H(5 )]-十四烷酸(分别为(R)-1和(S)-1)。如前一篇文章所述制备探针(R)-2和(S)-2。(1)通过动力学拆分外消旋体完成五氘代手性底物(R)-1和(S)-1的合成12-tridecyn-2-ol(6)与固定化的猪胰脂肪酶。通过一系列公认的反应,对映体纯的醇(R)-6和(S)-6分别转化为最终的酸(S)-1和(R)-1。用单独探针分别孵育的腺体的甲醇化脂质提取物的分析表明,在(Z)-11-十四碳烯酸向(E,E)-10