Studies on the constituents of useful plants. V. Multisubstituted flavones in the fruit peel of Citrus reticulata and their examination by gas-liquid chromatography.
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 Aspergillusniger 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