Publications by authors named "Cong-Er Zhang"
Objective: To study the chemical constituents from the active fractions of Kalimeris indica.
Methods: The chemical constituents were extracted of different concentrations and isolated by silica gel, Sephadex LH-20 column and preparative HPLC. The chemical structures were further elucidated by the physicochemical characters, MS and NMR spectral data.
Objective: To study the triterpenoids constituents from Wisteria sinensis Sweet Caulis.
Methods: The compounds were beta-solated and purified with silica gel and Sephadex LH-20 column chromatography from the petroleum ether extract. Their structures were determined on the basis of physicochemical properties and spectroscopic analysis.