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, I...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.
