[Study on Triterpenoids from Helicteres angustifolia by High-Speed Countercurrent Chromatography]

Area of Science:

• Natural Product Chemistry
• Chromatographic Separation Techniques
• Phytochemistry

Background:

• Helicteres angustifolia is a plant source of bioactive compounds.
• Triterpenoids possess diverse pharmacological properties.
• Efficient isolation methods are crucial for studying plant-derived compounds.

Purpose of the Study:

• To establish a high-speed countercurrent chromatography (HSCCC) method for separating and purifying triterpenoids from Helicteres angustifolia.
• To develop a rapid, high-purity, and high-yield isolation process.

Main Methods:

• Two-step HSCCC was employed for the separation of the ethyl acetate extract of Helicteres angustifolia.
• Compound structures were elucidated using ESI-MS (Electrospray Ionization Mass Spectrometry) and 1H-NMR (Proton Nuclear Magnetic Resonance).
• Fourier Transform Infrared (FTIR) spectroscopy was used for characterization.

Main Results:

• Six triterpenoids were successfully isolated and purified: methyl helicterilate, methyl helicterate, helicterilic acid, helicteric acid, betulinic acid, and oleanolic acid.
• High-performance liquid chromatography (HPLC) confirmed the purity of isolated compounds, with mass fractions exceeding 95.0%.
• The isolated compounds were identified by their spectroscopic data.

Conclusions:

• The developed HSCCC method is highly suitable for the separation and preparation of triterpenoids from Helicteres angustifolia.
• This method offers advantages of speed, high purity, and high yield.
• The study provides an effective approach for obtaining pure triterpenoids from this plant source for further research.