Metabolism of Deuterated<i>erythro</i>‐Dihydroxy Fatty Acids in<i>Saccharomyces cerevisiae</i>: Enantioselective Formation and Characterization of Hydroxylactones
作者:Leif‐A. Garbe、Katja Morgenthal、Katrin Kuscher、Roland Tressl
DOI:10.1002/hlca.200890129
日期:2008.6
Epoxides of fatty acids are hydrolyzed by epoxide hydrolases (EHs) into dihydroxy fatty acids which are of particular interest in the mammalian leukotriene pathway. In the present report, the analysis of the configuration of dihydroxy fatty acids via their respective hydroxylactones is described. In addition, the biotransformation of (±)-erythro-7,8- and -3,4-dihydroxy fatty acids in the yeast Saccharomyces
脂肪酸的环氧化合物被环氧水解酶(EHs)水解为二羟基脂肪酸,这在哺乳动物白三烯途径中特别重要。在本报告中,描述了通过其各自的羟基内酯对二羟基脂肪酸构型的分析。另外,通过GC / EI-MS分析表征了酵母酿酒酵母中(±)-赤型-7,8-和-3,4-二羟基脂肪酸的生物转化。化学合成的(±)的生物转化-赤-7,8-二羟基(7,8- 2 ħ 2)十四烷酸((±) -赤- 1)在酵母酿酒酵母导致形成5,6-二羟基(5,6- 2 H 2)十二酸(6),将其内酯化为(5 S,6 R)-6-羟基(5,6- 2 H 2)十二酸具有86%ee的-5-内酯((5 S,6 R)-4)进入赤型-5-羟基(5,6- 2 H 2)十二烷-6-内酯(erythro - 8)。另外,该α -ketols 7-羟基-8-氧代(7- 2 ħ 1)十四烷酸(图9a)和8-羟基-7-氧代(8- 2检测到H 1)十四烷酸(9b)作为中间体。6的进一步代谢产生3