O-Demethylation and Sulfation of 7-Methoxylated Flavanones by Cunninghamella elegans.
作者:Abdel-Rahim Sayed Ibrahim、Ahmed Mohamed Galal、Mohammed Shamim Ahmed、Gabir Salem Mossa
DOI:10.1248/cpb.51.203
日期:——
Metabolism of 7-O-methylnaringenin (sakuranetin) by Cunninghamella elegans NRRL 1392 yielded naringenin and naringenin-4′-sulfate. C. elegans also converted 5, 3′, 4′-trihydroxy-7-methoxyflavanone into eriodictyol-4′-sulfate. Furthermore, incubation of 5, 4′-dihydroxy-7, 3′-dimethoxyflavanone with the same fungus gave homoeriodictyol (5, 7, 4′-trihydroxy-3′-methoxyflavanone) and homoeriodicytol-7-sulfate. The structures of the new metabolites were established by spectral analysis including 2D-NMR, HR-ESI-FT-MS beside hydrolysis by acid.
Cunninghamella elegans NRRL 1392对7-O-甲基柚皮素(樱草素)的代谢作用产生了柚皮素和柚皮素-4′-硫酸盐。C. elegans还将5, 3′, 4′-三羟基-7-甲氧基黄烷酮转化为异黄酮-4′-硫酸盐。此外,将5, 4′-二羟基-7, 3′-二甲氧基黄烷酮与同一种真菌一起培养,可得到同型异黄酮(5, 7, 4′-三羟基-3′-甲氧基黄烷酮)和同型异黄酮-7-硫酸盐。通过包括二维核磁共振、高分辨质谱-飞行时间质谱在内的光谱分析和酸水解,确定了新代谢产物的结构。