An efficient, scalable approach to hydrolyze flavonoid glucuronides via activation of glycoside bond
2017
Jiang, Xue-Yang | Li, Xin-Chen | Liu, Wenyuan | Xu, Yun-Hui | Feng, Feng | Qu, Wei
Hydrolyzing flavonoid glucuronides into corresponding aglycones posed some significant challenges. To improve acid-catalyzed hydrolysis process of flavonoid glucuronide, structures of glucuronide, hydrolysis parameters and post-processing were optimized. The optimized condition was performed by hydrolysis flavonoid glycoside methyl ester in a mixed solvent consisting of 2 mol/L H2SO4/EtOH/H2O (1/8/1, v/v/v) at 95 °C for 7 h and resulted in up to 90% aglycone yields, minimal byproduct formations and milder hydrolysis conditions. Furthermore, the optimized method avoids tedious purification steps and is easily conducted on a relatively large-scale using economical and commercially available reagents.
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