Two novel compounds from Ardisia punctata Lindl.

To study the chemical constituents of Ardisia punctata, compounds were isolated with a combination of multi-chromatography. Their structures were determined on the basis of spectral analysis and comparison to those of the known compounds. A 1,4-benzoquinone derivative and a alkylphenol were isolated from the petroleum ether extract of the roots of Ardisia punctata.

Three new belamcandaquinones from Ardisia punctata.

Aim: To study the chemical constituents of Ardisia punctata.

Methods: Compounds were separated with a combination of multi-chromatography. Their chemical structures were determined on the basis of spectral analysis and single crystal X-ray diffraction.

[Chemical constituents from roots of Ardisia punctata].

Objective: To study the chemical constituents from the roots of Ardisia punctata.

Method: Compounds were isolated by chromatographic techniques on silica gel and Rp-HPLC column. Their structures were elucidated by chemical and spectroscopic methods.

[Determination of acetylharpagide in Ajuga decumbens by HPLC].

Objective: To establish a method of the quantitative determination of acetylharpagide in Ajuga decumbens.

Method: The chromatographic conditions were as follows: a Phenomenex Luna C18 column was used, the mobile phase was composed of acetontrile-water (15:85), the flow rate was 1.0 mL x min(-1) and the UV absorbance detection was set at 197 nm.

[Chemical constituents from roots of Ficus hirta].

Objective: To study the chemical constituents from the roots of Ficus hirta.

Method: Compounds were isolated by chromatographic techniques on silica gel and HP-20 resin columns. Their structures were elucidated by chemical and spectroscopic methods.