Synthesis and Use of Probes to Investigate the Cryptoregiochemistry of the First Animal Acetylenase
作者:José-Luis Abad、Sergio Rodríguez、Francisco Camps、Gemma Fabriàs
DOI:10.1021/jo060789h
日期:2006.9.1
of the deuterated (Z)-11-hexadecenoic acid probes required to decipher the cryptoregiochemistry of this enzyme. The label in the olefinic bonds was introduced by Wittig reaction between the appropriate deuterated reagents. Besides the vinyl deuterium atoms, for reliable GC−MS analyses these compounds bear a tetradeuterium tag, which was introduced by deuteration of an alkyne intermediate in the presence
Thaumetopoea pityocampa信息素腺含有一个不寻常的Δ 11,其产生一个alkynoic脂肪酸在这一物种的性信息素生物合成途径中间体acetylenase。在本文中,我们描述了氘代(Z)十一-十六碳烯酸探针可用于解密该酶的隐区域化学反应。烯键中的标记是通过适当的氘代试剂之间的Wittig反应引入的。除乙烯基氘原子外,为进行可靠的GC-MS分析,这些化合物还带有一个四氘标记,该标记是在威尔金森催化剂存在下通过炔烃中间体的氘化引入的。这些探针的信息素腺代谢研究提供了实验证据表明,(改造Ž)-11-十六碳烯酸成11 hexadecynoic酸由Δ 11 acetylenase通过逐步机制发生,其中,所述强乙烯基的显著扰动C11-在快速消除C-12上的乙烯基氢之前,先发生H键。