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http://hdl.handle.net/11455/70395| 標題: | Tocopherols and triterpenoids from Sida acuta | 作者: | Chen, C.R. Chao, L.H. Pan, M.H. Liao, Y.W. Chang, C.I. |
關鍵字: | Sida acuta;malvaceae;tocopherol;triterpene;7(a)-methoxy-alpha-tocopherot;taraxast-1,20(30)-dien-3-one;constituents;malvaceae | Project: | Journal of the Chinese Chemical Society | 期刊/報告no：: | Journal of the Chinese Chemical Society, Volume 54, Issue 1, Page(s) 41-45. | 摘要: | A new tocopherol derivative, 7(a)-methoxy-alpha-tocopherol (1), and a new taraxastane triterpene, taraxast-1,20(30)-dien-3-one (5), together with four known compounds, beta-tocopherol (2), alpha-tocopherol (3), alpha-tocospiro B (4) and taraxasterone (6) were isolated from the whole plant of Sida acuta. Their structures were elucidated by spectral analysis including MS, 1D and 2D-NMR spectroscopy. Among those compounds, compounds 1, 2, and 3 showed significant antioxidant effect (EC50 = 86.9, 68.2, and 70.9 mu M, respectively) in the DPPH radicals scavenging activity assay. |
URI: | http://hdl.handle.net/11455/70395 | ISSN: | 0009-4536 |
| Appears in Collections: | 期刊論文 |
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