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Perisesaccharides A-E, new oligosaccharides from the root barks of Periploca sepium. 2010

Lei Wang, and Zhi-Qi Yin, and Ying Wang, and Xiao-Qi Zhang, and Yao-Lan Li, and Wen-Cai Ye
Department of Phytochemistry, China Pharmaceutical University, Nanjing, P R China.

Five new oligosaccharides, named perisesaccharides A-E (1- 5), were isolated from the root barks of Periploca sepium. Their structures were elucidated by NMR and HRESIMS data. The absolute configurations of these compounds were determined by a combination of X-ray diffraction analysis, modified Mosher's method, circular dichroism spectroscopy, and acid hydrolysis. The boat conformation of oleandronic acid delta-lactone was reported for the first time.

UI MeSH Term Description Entries
D009844 Oligosaccharides Carbohydrates consisting of between two (DISACCHARIDES) and ten MONOSACCHARIDES connected by either an alpha- or beta-glycosidic link. They are found throughout nature in both the free and bound form. Oligosaccharide
D010936 Plant Extracts Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard. Herbal Medicines,Plant Extract,Extract, Plant,Extracts, Plant,Medicines, Herbal
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D018517 Plant Roots The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990) Plant Bulbs,Plant Root,Bulb, Plant,Bulbs, Plant,Plant Bulb,Root, Plant,Roots, Plant
D024301 Plant Bark The outer layer of the woody parts of plants. Bark, Plant,Bark, Tree,Tree Bark,Barks, Plant,Barks, Tree,Plant Barks,Tree Barks
D031109 Periploca A plant genus of the family Apocynaceae. It is a source of periplocosides (pregnane steroid glycosides).

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