A new prenylated flavonol, maackiaflavonol, was isolated from the ethanol extract of the roots of Maackia tenuifolia. Its structure was elucidated as 7-hydrox-8-prenylflavonol by means of spectroscopic analysis (UV, ... A new prenylated flavonol, maackiaflavonol, was isolated from the ethanol extract of the roots of Maackia tenuifolia. Its structure was elucidated as 7-hydrox-8-prenylflavonol by means of spectroscopic analysis (UV, IR, MS, NMR and 1H-1H COSY) and confirmed by total synthesis.展开更多
A method for the determination of genistein and formononetin in Maackia amurensis Rupr. et Maxim. by HPLC was reported. The RP-HPLC methods were used as follows: Hypersil ODS C18 column; The mobil phase is MeOH-1% ace...A method for the determination of genistein and formononetin in Maackia amurensis Rupr. et Maxim. by HPLC was reported. The RP-HPLC methods were used as follows: Hypersil ODS C18 column; The mobil phase is MeOH-1% acetic acid solution（gradient）, genistein and formononetin were determined by UV detector at 261nm and 249nm respectively. The results showed that average recovery and precision （RSD） for genistein and formononetinwere 100.4%,\ 101.8%and2.65%, 2.16% respectively. The method is appropriate for determinaton of genistein and formononetin in M. amurensis.展开更多
文摘 A new prenylated flavonol, maackiaflavonol, was isolated from the ethanol extract of the roots of Maackia tenuifolia. Its structure was elucidated as 7-hydrox-8-prenylflavonol by means of spectroscopic analysis (UV, IR, MS, NMR and 1H-1H COSY) and confirmed by total synthesis.
文摘A method for the determination of genistein and formononetin in Maackia amurensis Rupr. et Maxim. by HPLC was reported. The RP-HPLC methods were used as follows: Hypersil ODS C18 column; The mobil phase is MeOH-1% acetic acid solution（gradient）, genistein and formononetin were determined by UV detector at 261nm and 249nm respectively. The results showed that average recovery and precision （RSD） for genistein and formononetinwere 100.4%,\ 101.8%and2.65%, 2.16% respectively. The method is appropriate for determinaton of genistein and formononetin in M. amurensis.
