Chemical constituents from rhizome of Tripterygium hypoglaucum / 中草药

ABSTRACT

Objective: To study the chemical constituents from the rhizome of Tripterygium hypoglaucum. Methods: The concrete exacted by 95% ethanol from the rhizome of T. hypoglaucum was isolated and purified by chromatography on silica gel column chromatography, gel column chromatography, MPLC, etc. The structures of the chemical constituents were elucidated by means of NMR, MS, etc. Results: Twelve compounds were isolated and identified as 3β-hydroxy-4-hydroxymethyl-abieta-8,11,13-trien-7-one (1), 3β-acetoxy oleanolic acid (2), physcion (3), canophyllal (4), chrysophenol (5), quinone 21 (6), tripterifordin (7), triptobenzene B (8), 3,4-dimethoxyphenol (9), integracin A (10), celastrol (11), and β-sitosterol (12). Conclusion: Compound 1 is a new diterpene named tripterone, compounds 8-10 are isolated from this plant for the first time.