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By China) International Symposium on Plant Glycosides (1997 Kunming, Chong-Ren Yang, Osamu Tanaka, Chong-Ren Yang, Osamu Tanaka

ISBN-10: 0444501800

ISBN-13: 9780444501806

Within the plant state quite a few chemical parts take place in a glycoside shape (conjugation with sugar). Glycosides are very important, secondary metabolites. The structural variety is due to the the gigantic quantity of types and stereochemical configurations of the sugar part. Aglycones belong to terpenoid, steroid, flavonoid, quinonoid, lignan, different basic phenolics, and isothiocyanate. although, organic actions of glycosides are, in lots of circumstances, liable to the character of sugar moieties, although their aglycone is the same.

Since the 80s, plant glycosides were attracting an expanding quantity of curiosity from botanists and phytochemists world-wide for the subsequent reasons:

• they're tricky to isolate and purify

• they've got a vital organic functionality in flowers and memorable organic activities

• they seem to be a extremely important source of common medication, well-being meals, cosmetics and f

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Extra resources for Advances in plant glycosides, chemistry and biology: proceedings of the International Symposium on Plant Glycosides, August 12-15, 1997 Kunming, China

Sample text

Kumamoto University, isolated steroidal alkaloid-glycosides from potato tubers and edible fruits of tomato and egg-plant (Solanaceae) in significants yields [14]. Cytotoxic activities of steroidal saponins and steroidal alkaloid-glycosides from Solanum genera plants against a variety of cell lines, were currently reported by the same group [ 15]. References 1. , Sawada, T. and Fukuda, S. (1952) Yakugaku Zasshi 72, 586. 2. , Tanaka, O. -H. (1988) Chem. Pharm. Bull. 36, 4167. 3. Tominaga, T. (1960) Yakugaku Zasshi 80, 1202.

The EBV-EA inhibitory activity of the tested extract was compared with that of the control experiment with n-butyric acid plus TPA. In the experiments, the EBV-EA activities were ordinarily around 30%, and these values were taken as the positive control. Inhibitory effects of the Panax plant on the EBV-EA activation and the viabilities of Raji cells used as indicator cells in this assay method are shown in Table 1. Table 1. Percentages of EBV-EA Induction in Presence of Extracts of Panax Plants with Respect to Positive Control (100%).

As shown in Table 3, the extract of P. notoginseng also exhibited the inhibitory effects on mouse skin tumor induced by the different type promoter, fumonisin B 1. The inhibitory effects of the major saponin ofP. notoginseng, ginsenoside Rgl, were also investigated and compared with those of glycyrrhetic acid which have been known as a strong anti-tumor-promoter s) (Fig. 4-A,B). Table 3. Inhibition ofFumonisin Bl-Induced Tumor Promotion by Oral Administration of MeOH Extract of Panax notoginsen~.

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Advances in plant glycosides, chemistry and biology: proceedings of the International Symposium on Plant Glycosides, August 12-15, 1997 Kunming, China by China) International Symposium on Plant Glycosides (1997 Kunming, Chong-Ren Yang, Osamu Tanaka, Chong-Ren Yang, Osamu Tanaka


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