Two new labdane diterpene glycosides from flowers of Baccharis medullosa DC.
From the flowers of Baccharis medullosa DC (Asteraceae) two new ent-labdane-type diterpene glycosides were isolated. Structures were established by application of various spectroscopic techniques. The sugar residues were identified after acid hydrolysis of the isolated products.
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Intequi-Conicet-Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, Argentina.
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Giordano
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D001118:Argentina; D019659:Asteraceae / Q000737:chemistry*; D002853:Chromatography, Liquid; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D013237:Stereoisomerism
C449602:2beta-(L-rhamnopyranosyl)-3alpha-angeloyloxy-15-acetyloxy-7,13(14)E-dien-ent-labdane; C449603:2beta-(L-rhamnopyranosyl)-3alpha-angeloyloxy-15-hydroxy-7,13(14)E-dien-ent-labdane; D004224:Diterpenes; D006027:Glycosides