• Archives of Pharmacal Research
• /
• v.8 no.4
• /
• pp.243-247
• /
• 1985

A new $\beta$-carboline alkaloid, 1-carbobutoxy-$\beta$-carboline as well as $N_{9}$ -formylharman, 1-carboethoxy-$\beta$-carboline, 1-carbomethoxy-$\beta$- carboline, perloyrine, harman and norharman were isolated from the rhizoma of Polygala tenuifolia Willdenow. The structures were elucidated on the basis of spectroscopic studies and chemical evidence.

• Analytical Science and Technology
• /
• v.6 no.3
• /
• pp.255-259
• /
• 1993

${\beta}$-Carboline alkaloids of Polygala tenuifolia (Polygalaceae), an expectorant, tonic and sedative drude drug, were determined by HPLC. The alkaloids were separated by RP-18 column with gradient elution of 0.01M potassium phosphate buffer(pH=3.5) and acetonitrile and detected at UV 254nm. Two methods for the preparation of alkaloid fraction were compared. One was solvent extraction method using acid and base, and the other was solid phase extraction with ion exchange resin (Amberlyst 15). A more refined HPLC chromatogram was obtained using the solid phase extraction method. The alkaloidal contents in P. tenuifolia determined by this method were : harman $2.8{\times}10^{-3}%$, norharman $1.7{\times}10^{-3}%$, 1-carbomethoxy-${\beta}$-carboline $1.3{\times}10^{-3}%$, 1-carboethoxy-${\beta}$-carboline $1.4{\times}10^{-3}%$ and perlolyrine $3.3{\times}10^{-3}%$, respectively.