Three New Pentasaccharide Resin Glycosides from the Roots of Sweet Potato (Ipomoea batatas)
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概要
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Three new pentasaccharide resin glycosides, batatosides III-V (1-3), were isolated from the roots of Sweet potato (Ipomoea batatas). Saponification of the crude resin glycoside mixture yielded substituents and simonic acid B. The structures of the isolated compounds (1-3) were established through spectroscopic analyses, including high field NMR spectroscopy and HR-ESI-MS, and chemical correlation. The major characteristics of 3 are the presence of three different substituents, especially the substituent of cinnamic acid was seldom. The monosaccharides of 1-3 were proved by GC-MS and the absolute configuration of aglycone was further established as S by Mosher's method with R-methyloxyphenylacetic acid (MPA) and S-MPA.
- 2008-12-01
著者
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Kong Ling-Yi
Department of Natural Medicinal Chemistry, China Pharmaceutical University
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NIWA Masatake
Faculty of Pharmacy, Meijo University
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Huang Xue-feng
Department Of Natural Medicinal Chemistry China Pharmaceutical University
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Kong Ling-yi
Department Of Natural Medicinal Chemistry China Pharmaceutical University
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Niwa Masatake
Faculty Of Pharmacy Meijo University
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YIN Yong-Qin
Department of Natural Medicinal Chemistry, China Pharmaceutical University
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Yin Yong-qin
Department Of Natural Medicinal Chemistry China Pharmaceutical University:department Of Chinese Medi
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