Steric analysis of epoxyalcohol and trihydroxy derivatives of 9-hydroperoxy-linoleic acid from hematin and enzymatic synthesis
作者:Christopher P. Thomas、William E. Boeglin、Yoel Garcia-Diaz、Valerie B. O’Donnell、Alan R. Brash
DOI:10.1016/j.chemphyslip.2013.01.002
日期:2013.2
analysis of dimethoxypropane derivatives. Four trihydroxy isomers were identified upon mild acid hydrolysis of 9S,10S-trans-epoxy-11E-13S-hydroxyoctadecenoate: 9S,10R,13S, 9S,12R,13S, 9S,10S,13S and 9S,12S,13S-trihydroxy-octadecenoic acids, in the ratio 40:26:22:12. We also identified a prominent δ-ketol rearrangement product from the hydrolysis as mainly the 9-hydroxy-10E-13-oxo isomer. Short incubation
我们表征从9产生的烯丙基环氧醇以及它们的三羟基的水解产物- [R -和9 š非酶促条件下-hydroperoxy十八碳烯酸(HPODE)中,用羟高铁血红素和随后的酸水解反应和酶的条件下,温育与甜菜含有氢过氧化物异构酶和环氧化物水解酶。产物通过 HPLC 解析,转化的区域和立体化学通过1 H NMR 和 GC-MS 分析二甲氧基丙烷衍生物的组合来确定。9 S ,10 S - trans -epoxy-11 E -13 的弱酸水解鉴定出四种三羟基异构体S-羟基十八烯酸:9 S ,10 R ,13 S , 9 S ,12 R ,13 S , 9 S ,10 S ,13 S和 9 S ,12 S ,13 S-三羟基-十八碳烯酸,比例为 40: 26:22:12。我们还从水解中确定了一个突出的 δ-酮醇重排产物,主要是 9-羟基-10 E -13-氧代异构体。9 R-和 9 S -HPODE 与B.