Search results for "Dammarane"

showing 2 items of 2 documents

A dammarane-type saponin from the roots of Ampelozizyphus amazonicus.

1993

A new C31 dammarane-type triterpenoid saponin has been isolated from the roots of Ampelozizyphus amazonicus. Its structure was elucidated to be ampelozigenin-15 alpha-O-acetyl- 3-O-alpha-L-rhamnopyranosyl-(1--2)-beta-D-glucopyranoside by 1D and 2D NMR spectroscopic methods, and by chemical transformations. Ampelozigenin is a novel triterpene, (20R,22R)-16 beta,22:16 alpha, 30-diepoxydammar-24(24')- methylene-3 beta, 15 alpha, 20-triol.

chemistry.chemical_classificationAmpelozizyphusMagnetic Resonance SpectroscopyPlants MedicinalbiologyStereochemistryDammaraneMolecular Sequence DataSaponinPlant ScienceGeneral MedicineHorticultureSaponinsbiology.organism_classificationBiochemistryTriterpeneschemistry.chemical_compoundTriterpenechemistryCarbohydrate SequenceRhamnaceaeMolecular BiologyTwo-dimensional nuclear magnetic resonance spectroscopyTriterpenoid saponinPhytochemistry
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Dammarane triterpenes of Salvia hierosolymitana

1990

Abstract Salvilymitone and salvilymitol, two new triterpenoids isolated from Salvia hierosolymitana , have been shown to be 7β,25-dihydroxy-(20 S ,24 R )-epoxydammaran-3-one and (20 S ,24 R )-epoxydammaran-3β,7α,25-triol, respectively. The absolute stereochemistry of these triterpenoids has been established by an X-ray diffraction analysis of a 25,26,27-trinor derivative obtained by degradation of both compounds. In addition, four previously known triterpenoids were isolated from the same source.

chemistry.chemical_classificationbiologyStereochemistryDammaranePlant ScienceGeneral MedicineHorticulturebiology.organism_classificationBiochemistrySalvia hierosolymitanaTerpenechemistry.chemical_compoundTriterpenoidchemistryTriterpeneOrganic chemistryMolecular BiologyDerivative (chemistry)Phytochemistry
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