title: Analysis of three lupane type triterpenoids in Helicteres angustifolia by high-performance liquid chromatography.
abstract: Kang-chih-ma is the dried roots and stems of Helicteres angustifolia (Sterculiaceae) and a commonly used folk herbal drug in Taiwan. It possesses antidotal, analgesic, anti-inflammatory and anti-bacterial effects and is also known as a kind of tumor inhibitory plant. To evaluate the quality of H. angustifolia, a simple, rapid and accurate high-performance liquid chromatographic (HPLC) method was developed for the assay of three lupane type triterpenes: 3beta-acetoxy-27-benzoyloxylup-20(29)-en-28-oic acid methyl ester (methyl helicterate), 3beta-acetoxy-27-benzoyloxylup-20(29)-en-28-oic acid, and 3beta-acetoxy-27-(p-hydroxyl) benzoyloxylup-20(29)-en-28-oic acid methyl ester. The present HPLC system used an Inertsil ODS-2 column by gradient elution with acetonitrile and water as the mobile phase and detected at UV 230 nm. Regression equations revealed good linear relationships (correlation coefficients: 0.9922-0.9997). The relative standard deviations of these three constituents ranged between 1.05-3.14% (intraday) and 2.12-4.38% (interday). The contents of these three constituents of the heartwood and the bark of the roots of H. angustifolia in five different samples have also been determined.
authors.affiliation: Institute of Chinese Pharmaceutical Sciences, China Medical College, 91, Hsueh-Shih Road, 404, Taichung, Taiwan. yschang@mail.cmc.edu.tw
authors.forename: Y S
authors.initials: YS
authors.lastname: Chang
authors.forename: Y R
authors.initials: YR
authors.lastname: Ku
authors.forename: J H
authors.initials: JH
authors.lastname: Lin
authors.forename: K L
authors.initials: KL
authors.lastname: Lu
authors.forename: L K
authors.initials: LK
authors.lastname: Ho
mesh_terms: D002851:Chromatography, High Pressure Liquid; D007202:Indicators and Reagents; D019660:Malvaceae / Q000737:chemistry*; D013058:Mass Spectrometry; D019441:Plant Epidermis / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D012015:Reference Standards; D012997:Solvents; D013624:Taiwan; D014315:Triterpenes / Q000032:analysis*; D014934:Wood
chemical_list: D007202:Indicators and Reagents; D012997:Solvents; D014315:Triterpenes