Abstract
Two new C(21) steroidal glycosides with a new aglycone of amplexicogenin B were isolated from Cynanchum amplexicaule Sieb. et Zucc. Their structures were elucidated as amplexicogenin B-3-O-β-D-cymaropyranoside (1), amplexicogenin B-3-O-β-D-cymaropyranosyl-(1 → 4)-α-L-cymaropyranosyl-(1 → 4)-β-D-cymaropyranoside (2) by means of spectral and chemical analysis.
MeSH terms
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Apocynaceae / chemistry*
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Cynanchum / chemistry*
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Drugs, Chinese Herbal / chemistry
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Drugs, Chinese Herbal / isolation & purification*
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Molecular Structure
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Plant Roots / chemistry
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Saponins / chemistry
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Saponins / isolation & purification*
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Steroids / chemistry
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Steroids / isolation & purification*
Substances
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Drugs, Chinese Herbal
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Saponins
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Steroids
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amplexicogenin B-3-O-beta-D-cymaropyranoside
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amplexicogenin--3-O-beta-D-cymaropyranosyl-(1-4)-alpha-L-cymaropyranosyl-(1-4)-beta-D-cymaropyranoside