Synthesis of <i>gem</i>-Dideuterated Tetradecanoic Acids and Their Use in Investigating the Enzymatic Transformation of (<i>Z</i>)-11-Tetradecenoic Acid into (<i>E</i>,<i>E</i>)-10,12-Tetradecadienoic Acid
作者:Sergio Rodríguez、Francisco Camps、Gemma Fabriàs
DOI:10.1021/jo010560w
日期:2001.11.1
transformed into the labeled bromides 17 and 18 by reduction with NaBD(4), tosylation of the resulting alcohol, replacement of the tosyloxy group by deuteride with LiAlD(4), hydrolysis, and reaction with N-bromosuccinimide. The resulting bromides were converted into the alpha-acetylenic esters 21 and 22, respectively, and the additional deuterium labels were introduced by reduction of the conjugated triple
我们报告了氘代十四烷酸[2,2,3,3-(2)H(4)]-,[2,2,3,3,10,10-(2)H(6)]-的制备,和[2,2,3,3,13,13-(2)H(6)]-十四烷酸(分别为1,2,2,3)及其用于研究(Z )-11-十四碳烯酸转化为(E,E)-10,12-十四碳烯酸。探针2和3由中间体酮7和10制备而成,通过用NaBD(4)还原将其转化为标记的溴化物17和18,甲苯磺酸化所得的醇,用LiAlD(4)置换氘代甲苯磺酰氧基,水解,并与N-溴代琥珀酰亚胺反应。将所得的溴化物分别转化为α-炔属酸酯21和22,并通过在氘代甲醇中用Mg还原共轭三键来引入其他氘标记。从11-溴十一烷开始的相同反应序列得到27。标记的酯23、24和27的皂化分别得到氘代酸2、3和1。生化实验的结果表明,在(Z)-11-十四碳烯酸转化为(E,E)-10,12-十四碳二烯酸中,去除C10-H而非去除C13-H对氘取