ABSTRACT
Seven compounds were isolated from the alcohol extract of Edgeworthia gardneri by various technologies, including silica gel, Sephadex LH-20 and high performance liquid chromatography, and were identified as edgeworthiaside A (1), 2,4,6-trichlorol-3-methyl-5-methoxy-phenol 1-O-β-D-glucopyranosyl-(1-6)-β-D-glucopyranoside (2), 2,6-dimethoxy-4-(2-propen-1-yl)phenyl 6-O-(6-deoxy-α-L-mannopyranosyl)-β-D-glucopyranoside (3), eugenol rutinoside (4), tiliroside (5), edgeworoside C (6), and salicylic acid (7). Compound 1 is a new chlorophenyl glycoside and 2-4 were isolated for the first time from Edgeworthia gardneri. The in vitro inhibition of α-glucosidase showed that the inhibition rate of compounds 1 and 2 were similar to acarbose.
ABSTRACT
Objective: To investigate the chemical compositions and anticancer activity of Mollugo pentaphylla. Methods: These compounds were isolated by various technologies, such as silica gel, Sephadex LH-20 and high performance liquid chromatography. Their structures were elucidated on the basis of physicochemical properties and spectroscopic data. The cytotoxic activities of compounds 1-5 against five cancer cell lines were tested by MTT. Results: Six compounds were isolated from this plant and identified as mollugoside E (1), 3-O-[α-L-rhamnopyranosy1 (1→2)-α-L-arabinopyranosyl]-28-O-[β-D-glucopyranosyl (1→6)-β-D- glucopyranosyl]oleanolic acid (2), raddeanoside R8 (3), raddeanin A (4), mollugogenol A (5), and oleanolic acid (6). The cytotoxic activities results showed that compounds 1-5 had certain inhibitory effects on human prostate cancer DU145 cell lines, cervical cancer Hela cell lines and early-juvenile leukemia HL 60 cell lines, especially on HL 60 cells with IC50 value of 10.21, 38.43, 40.28, 20.59, and 83.16 μmol/L, respectively. Conclusion: Compound 1 is a new triterpenoid saponin and compounds 2-4 are isolated first time from M. pentaphylla. The cytotoxic activities results showed that compounds 1-5 had certain inhibitory effects on DU145, Hela and HL 60 cell lines.
ABSTRACT
Objective: To study the chemical constituents from the roots of Clematis manshurica. Methods: Ten compounds were separated and purified by silica gel, Sephadex LH-20, and preparative HPLC. The structures were identified by physicochemical properties and spectral analyses. Results: A total of ten oleanane-type triterpenoid saponins were isolated and identified as clematomandshurica saponin L (1), clematichinenoside A (2), clematochinenoside F (3), clematernoside A (4), clematichinenoside B (5), clematichinenoside C (6), clematomandshurica saponin B (7), clematomandshurica saponin D (8), clematomandshurica saponin C (9), and huzhangoside B (10), respectively. Conclusion: Compound 1 is a new oleanane-type triterpenoid glycoside, and compounds 2-6 are isolated from this plant for the first time.
ABSTRACT
A new triterpenoid saponin named esculentoside U(1), along with the five known compounds, was isolated and characterized from the roots of Phytolacca acinosa, a commonly used traditional Chinese medicine with anti-inflammatory and anti-rheumatoid activities. The structure of the new saponin was elucidated as 3-O-[β-D-glucopyranosyl-(1→4)]-β-D-xylopyranosyl]-2, 23-dihydroxyolean-11, 13(18)-diene-28, 29-dioic acid 29-methyl ester(1). The assignment of all NMR signals of 1 was performed by means of 2D-NMR experiments.