- 作者: 陳芝融,趙麗惠,潘敏雄,廖運文,張誌益
- 作者服務機構: Graduate Institute of Biotechnology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan, R.O.C.
- 中文摘要: A new tocopherol derivative, 7a-methoxy-α-tocopherol (1), and a new taraxastane triterpene, taraxast-1,20(30)-dien-3-one (5), together with four known compounds, β-tocopherol (2), α-tocopherol (3), α-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 70.9μM, respectively) in the DPPH radicals scavenging activity assay.
- 英文摘要: --
- 中文關鍵字: Sida acuta; Malvaceae; Tocopherol; Triterpene; 7a-Methoxy-α-tocopherol; Taraxast-1,20(30)-dien-3-one
- 英文關鍵字: --