Facile Synthesis of Saponins Containing 2,3-Branched Oligosaccharides by Using Partially Protected Glycosyl Donors

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Authors
Gu, Guofeng
Du, Yuguo
Linhardt, Robert J.
Issue Date
2004-08-06
Type
Article
Language
ENG
Keywords
Biology , Chemistry and chemical biology , Chemical and biological engineering , Biomedical engineering
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Abstract
Two natural saponins 1 and 2, isolated from Solanum indicum L., and containing 2,3-branched sugar moieties, have been efficiently synthesized. Partially protected monosaccharide and disaccharide donors were used to facilitate target synthesis. Stereo factors were critical in incorporating 2,3-branched sugars on steroid aglycones. Saponin 1 was synthesized in five steps and 30% overall yield, while saponin 2 was obtained using six straightforward sequential reactions in 31% overall yield. Saponin 2 shows promising cytotoxic activity toward human hepatocellular carcinoma BEL-7402 with an IC50 of <6 μg/mL.
Description
Journal of Organic Chemistry, 69, 5497-5500
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Full Citation
Facile Synthesis of Saponins Containing 2,3-Branched Oligosaccharides by Using Partially Protected Glycosyl Donors, G. Gu, Y. Du, R. J. Linhardt, Journal of Organic Chemistry, 69, 5497-5500, 2004.
Publisher
American Chemical Society (ACS)
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ISSN
223263
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