Search results for "Erythrophleum"

showing 3 items of 3 documents

<b>ANTIMICROBIAL DITERPENOID ALKALOIDS FROM <i>ERYTHROPHLEUM SUAVEOLENS</i> (GUILL. & PERR.) BRENAN</b>

2005

An investigation of the stem bark of Erythrophleum suaveolens (Guill. & Perr.) Brenan yielded the known amide norcassaide ( 1 ) and a new diterpenoid alkaloid named norerythrosuaveolide ( 2 ) which was characterized as 7β-hydroxy-7-deoxo-6-oxonorcassaide. The structures were established on the basis of one and two-dimensional 1 H and 13 C NMR spectral data. The compounds showed potent antimicrobial activities against bacteria and yeasts. KEY WORDS: Erythrophleum suaveolens (Guill. & Perr.) Brenan, Norcassaide, Diterpenoid alkaloid, Norerythrosuaveolide, Antimicrobial activities, Bacteria, Yeasts Bull. Chem. Soc. Ethiop. 2005, 19(2), 221-226.

Stem barkbiologyTraditional medicineChemistryStereochemistryErythrophleum suaveolensGeneral ChemistryAntimicrobialbiology.organism_classificationSpectral dataTerpenoidBulletin of the Chemical Society of Ethiopia
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An approach to erythrophleum alkaloids. Synthesis of methyl (−)-4-epi-cassamate

1986

Abstract A synthetic approach to Erythrophleum alkaloids, involving as a key-step the regiospecific deprotonation of the ketone 5a, is described.

chemistry.chemical_classificationKetonebiologyChemistryStereochemistryAlkaloidErythrophleumOrganic Chemistrybiology.organism_classificationBiochemistrychemistry.chemical_compoundDeprotonationDrug DiscoveryOrganic chemistryEpimerStereoselectivityEnantiomerDiterpeneTetrahedron Letters
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Antioxidant stilbenoid and flavanonol from stem ofErythrophleum suaveolens(Guill. & Perr.)

2015

Keywords: NMR; 1H NMR; Caesalpiniaceae; Erythrophleum suaveolens; flavanonol; stilbenoid; radical scavenging activity

chemistry.chemical_compoundAntioxidantbiologyChemistrymedicine.medical_treatmentErythrophleum suaveolensmedicineOrganic chemistryGeneral Materials ScienceFlavanonolGeneral ChemistryStilbenoidbiology.organism_classificationMagnetic Resonance in Chemistry
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