Qualitative and Quantitative Analysis of Ephedra Alkaloids in Ephedrae Herba by Carbon-13 Nuclear Magnetic Resonance

抄録

A ¹³C-nuclear magnetic resonance procedure is described for the rapid qualitative and quantitative analysis of ephedra alkaloids (I and II). This technique has been applied to the analysis of basic fractions from various ephedrae herba, giving results comparable to those obtained by gas-liquid chromatography technique, but with many advantages.