Biocatalyzed Synthesis and Structural Characterization of Monoglucuronides of Hydroxytyrosol, Tyrosol, Homovanillic Alcohol, and 3-(4′-Hydroxyphenyl)propanol
作者:Olha Khymenets、Jesús Joglar、Pere Clapés、Teodor Parella、María-Isabel Covas、Rafael de la Torre
DOI:10.1002/adsc.200606221
日期:2006.10
The biocatalytic synthesis and purification of O-β-D-monoglucuronide conjugates of hydroxytyrosol, tyrosol, homovanillic alcohol, and 3-(4′-hydroxyphenyl)propanol, using porcine liver microsomes, are described here. The glucuronides were synthesized, analyzed and separated by HPLC-UV, identified by HPLC-MS, and their structures unequivocally established by NMR techniques. The outcome of the glucuronidation
O的生物催化合成与纯化本文描述了使用猪肝微粒体的羟基酪醇,酪醇,高香草醇和3-(4'-羟基苯基)丙醇的-β-D-单葡糖醛酸苷共轭物。葡糖醛酸苷通过HPLC-UV合成,分析和分离,通过HPLC-MS鉴定,并且通过NMR技术明确地确定了它们的结构。葡糖醛酸糖化反应的结果取决于酚类化合物的结构。因此,用猪肝微粒体生物催化的羟基酪醇的葡糖醛酸化仅在酚羟基上进行。区域选择性类似于对人和大鼠肝微粒体观察到的区域选择性,其4'-羟基位置比3'-羟基位置更有利。对于酪醇,高香草醛醇和羟苯基丙醇,在微粒体葡萄糖醛酸化过程中形成了两种产物:O -β-D-葡糖醛酸化的衍生物,以及次要的O -β-D-葡糖醛酸化的脂族醇。