alexa Antitumor agents. 261. 20(S)-protopanaxadiol and 20(s)-protopanaxatriol as antiangiogenic agents and total assignment of (1)H NMR spectra.


Journal of Traditional Medicine & Clinical Naturopathy

Author(s): Usami Y, Liu YN, Lin AS, Shibano M, Akiyama T, , Usami Y, Liu YN, Lin AS, Shibano M, Akiyama T,

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Abstract 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 (1)H 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 (1)H NMR signals of 2, together with correction of data for 1 from prior reports. This article was published in J Nat Prod and referenced in Journal of Traditional Medicine & Clinical Naturopathy

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