Biotransformation of Polymethoxylated Flavonoids: Access to Their 4‘-<i>O</i>-Demethylated Metabolites
作者:Didier Buisson、Jérôme Quintin、Guy Lewin
DOI:10.1021/np070084q
日期:2007.6.1
Regioselective O-demethylation of the flavones tangeretin (1) and 3-hydroxytangeretin (6) into their 4'-O-demethylated metabolites was performed by using an Aspergillus niger strain. This method serves as a straightforward alternative to multistep synthesis or semisynthesis. The microbial approach is complementary to the chemical procedure, which furnishes a 5-O-demethylated product. P450 inhibitors
通过使用黑曲霉菌株将黄酮橘红素(1)和3-羟基橘皮素(6)区域选择性地O-去甲基化成它们的4'-O-去甲基化的代谢物。该方法可作为多步合成或半合成的直接替代方法。微生物方法是化学过程的补充,化学过程提供了5-O-去甲基化的产物。P450抑制剂阻止了橘皮苷的生物转化(1)。这些结果表明,P450氧化系统可能参与了这种O-去甲基化,并证明了聚甲氧基黄酮在微生物和哺乳动物代谢中的相似性。