Antitumor Agents. 261. 20(S)-Protopanaxadiol and 20(S)-Protopanaxatriol as Antiangiogenic Agents and Total Assignment of 1H NMR Spectra
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- 作者：Yoshihide Usami ; Yi-Nan Liu ; An-Shen Lin ; Makio Shibano ; Toshiyuki Akiyama ; Hideji Itokawa ; Susan L. Morris-Natschke ; Kenneth Bastow ; Ryoji Kasai ; Kuo-Hsiung Lee
- 刊名：Journal of Natural Products
- 出版年：2008
- 出版时间：March 2008
- 年：2008
- 卷：71
- 期：3
- 页码：478 - 481
- 全文大小：61K
- 年卷期：v.71,no.3(March 2008)
- ISSN：1520-6025
文摘
Angiogenesis is a critical step in tumor progression and involves several steps including endothelial cell (EC) proliferation, migration, and matrix remodeling. We investigated the antiangiogenic effects of 20(S)-protopanaxadiol (1) and 20(S)-protopanaxatriol (2), the sapogenins of two major ginseng saponins, in an angiogenesis model of human umbilical vein endothelial cells (HUVECs). These compounds inhibited the proliferative activity of HUVECs in a dose-dependent manner and have potential as anticancer drug candidates. In addition, we report the complete and unambiguous assignment of 1H NMR spectra of 1 and 2, based on analyses of 2D NMR spectra including COSY, NOESY, HSQC, and HMBC. This report is the first to completely assign the 1H NMR signals of 2, together with correction of data for 1 from prior reports.