The anticancer activity of non-alkaloid components in Uncaria macrophylla Wall. was studied. The results indicated that ursolic acid showed the strongest activity of inhibiting the proliferation of tumor cells; 3β-6...The anticancer activity of non-alkaloid components in Uncaria macrophylla Wall. was studied. The results indicated that ursolic acid showed the strongest activity of inhibiting the proliferation of tumor cells; 3β-6β-23-trihydroxyurs-12-en-28-oic acid, β-sitosterol and 3β-6β-19α-trihydroxyurs-12-en-28-oic acid possessed the same activity, too.展开更多
The present study was designed to investigate the non-alkaloid compounds from the leaves and stems of Vinca major cultivated in Yunnan Province, China. The compounds were isolated using chromatographic techniques. The...The present study was designed to investigate the non-alkaloid compounds from the leaves and stems of Vinca major cultivated in Yunnan Province, China. The compounds were isolated using chromatographic techniques. The structures were elucidated by 1D- and 2D-NMR spectroscopic methods in combination with UV, IR, and MS analyses. The 1, 1-diphenyl-2-picrylhydrazyl (DPPH)-scavenging activity of Compounds 1-7 were evaluated. One new iridoid glycoside (compound 1), together with 11 known compounds, were isolated from Vinca major. Compounds 1, 5, and 6 showed moderate DPPH-scavenging activity, with IC50 values being 70.6, 32.8, and 62.2μmaol·L 1, respectively. In conclusion, compound 1 is a newly identified iridoid glycoside with moderate antioxidant activity.展开更多
文摘The anticancer activity of non-alkaloid components in Uncaria macrophylla Wall. was studied. The results indicated that ursolic acid showed the strongest activity of inhibiting the proliferation of tumor cells; 3β-6β-23-trihydroxyurs-12-en-28-oic acid, β-sitosterol and 3β-6β-19α-trihydroxyurs-12-en-28-oic acid possessed the same activity, too.
基金supported by National Natural Science Foundation of China(No.81225024)National Science and Technology Support Program of China(No.2013 BAI11B02)
文摘The present study was designed to investigate the non-alkaloid compounds from the leaves and stems of Vinca major cultivated in Yunnan Province, China. The compounds were isolated using chromatographic techniques. The structures were elucidated by 1D- and 2D-NMR spectroscopic methods in combination with UV, IR, and MS analyses. The 1, 1-diphenyl-2-picrylhydrazyl (DPPH)-scavenging activity of Compounds 1-7 were evaluated. One new iridoid glycoside (compound 1), together with 11 known compounds, were isolated from Vinca major. Compounds 1, 5, and 6 showed moderate DPPH-scavenging activity, with IC50 values being 70.6, 32.8, and 62.2μmaol·L 1, respectively. In conclusion, compound 1 is a newly identified iridoid glycoside with moderate antioxidant activity.