ABSTRACT
Objective: To study the chemical constituents in the effective fractions of charred Sanguisorbae Radix. Methods: The compounds were isolated and purified by column chromatography and their structures were identified on the basis of physicochemical properties and spectral analysis. Results: Five compounds were isolated and identified as 3β-hydroxy-28-norurs-17,19,21-trien (1), 3β-hydroxy-28-norurs-12,17-dien (2), 3β,19α-dihydroxyurs-13(18)-en-28-oic acid (3), 3β-[(α-L-arabin-opyranosyl) oxy]-28-norurs-12,17-dien (4), and pomolic acid (5). Conclusion: Compounds 1, 3, and 4 are novel compounds belong to triterpenoids and triterpenoid saponins, named as sanguisorbigenins Z, Y1, and Y2, respectively. © 2013 Tianjin Press of Chinese Herbal Medicines.