0000000001304015

AUTHOR

Tsegaye Deyou

showing 6 related works from this author

Isoflavones and Rotenoids from the Leaves of Millettia oblata ssp. teitensis

2017

A new isoflavone, 8-prenylmilldrone (1), and four new rotenoids, oblarotenoids A−D (2−5), along with nine known compounds (6−14), were isolated from the CH2Cl2/CH3OH (1:1) extract of the leaves of Millettia oblata ssp. teitensis by chromatographic separation. The purified compounds were identified by NMR spectroscopic and mass spectrometric analyses, whereas the absolute configurations of the rotenoids were established on the basis of chiroptical data and in some cases by single-crystal X-ray crystallography. Maximaisoflavone J (11) and oblarotenoid C (4) showed weak activity against the human breast cancer cell line MDA-MB-231 with IC50 values of 33.3 and 93.8 μM, respectively. peerReviewed

Millettia oblata ssp. teitensisflavonoiditddc:540Institut für Chemieisoflavoneshernekasvitluonnonaineetrotenoids
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Rotenoids, Flavonoids, and Chalcones from the Root Bark of Millettia usaramensis.

2015

Five new compounds, 4-O-geranylisoliquiritigenin (1), 12-dihydrousararotenoid B (2), 12-dihydrousararotenoid C (3), 4'-O-geranyl-7-hydroxyflavanone (4), and 4'-O-geranyl-7-hydroxydihydroflavanol (5), along with 12 known natural products (6-17) were isolated from the CH2Cl2/MeOH (1:1) extract of the root bark of Millettia usaramensis ssp. usaramensis by chromatographic separation. The purified metabolites were identified by NMR spectroscopic and mass spectrometric analyses, whereas their absolute configurations were established on the basis of chiroptical data and in some cases also by X-ray crystallography. The crude extract was moderately active (IC50 = 11.63 μg/mL) against the ER-negative…

StereochemistryPlasmodium falciparumMolecular ConformationPharmaceutical Scienceroot barkCrystallography X-Ray01 natural sciencesMillettiaAnalytical ChemistryMillettia usaramensischemistry.chemical_compoundAntimalarialsChalconesDrug DiscoveryPlant BarkHumansta116IC50Nuclear Magnetic Resonance Biomolecularta317metabolitesPharmacologyFlavonoidsChromatographyNatural productbiologyMolecular Structure010405 organic chemistryChemistryPlant ExtractsOrganic ChemistryPlasmodium falciparumChloroquinebiology.organism_classification0104 chemical sciencesMillettia010404 medicinal & biomolecular chemistryChromatographic separationHEK293 CellsComplementary and alternative medicinevisual_artFlavanonesvisual_art.visual_art_mediumPlant BarkMolecular MedicineBarkrotenoidsJournal of natural products
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CCDC 1409159: Experimental Crystal Structure Determination

2016

Related Article: Tsegaye Deyou, Ivan Gumula, Fangfang Pang, Amra Gruhonjic, Michael Mumo, John Holleran, Sandra Duffy, Paul A. Fitzpatrick, Matthias Heydenreich, Göran Landberg, Solomon Derese, Vicky Avery, Kari Rissanen, Máté Erdélyi, Abiy Yenesew|2015|J.Nat.Prod.|78|2932|doi:10.1021/acs.jnatprod.5b00581

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters11b-Hydroxy-4a11b-dihydro[13]dioxolo[67]chromeno[34-b][13]dioxolo[45-h]chromen-12(5H)-oneExperimental 3D Coordinates
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CCDC 1061815: Experimental Crystal Structure Determination

2016

Related Article: Tsegaye Deyou, Ivan Gumula, Fangfang Pang, Amra Gruhonjic, Michael Mumo, John Holleran, Sandra Duffy, Paul A. Fitzpatrick, Matthias Heydenreich, Göran Landberg, Solomon Derese, Vicky Avery, Kari Rissanen, Máté Erdélyi, Abiy Yenesew|2015|J.Nat.Prod.|78|2932|doi:10.1021/acs.jnatprod.5b00581

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters12b-Hydroxy-22-dimethyl-5a12b-dihydro-2H-[13]dioxolo[67]chromeno[34-b]pyrano[23-h]chromen-13(6H)-oneExperimental 3D Coordinates
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CCDC 1061111: Experimental Crystal Structure Determination

2017

Related Article: Tsegaye Deyou, Marco Makungu, Matthias Heydenreich, Fangfang Pan, Amra Gruhonjic, Paul A. Fitzpatrick, Andreas Koch, Solomon Derese, Jerry Pelletier, Kari Rissanen, Abiy Yenesew, and Máté Erdélyi|2017|J.Nat.Prod.|80|2060|doi:10.1021/acs.jnatprod.7b00255

Space GroupCrystallography(SS)-9-methoxy-6a12a-dihydrochromeno[23-c][13]dioxolo[45-g]chromen-12(6H)-oneCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1409160: Experimental Crystal Structure Determination

2016

Related Article: Tsegaye Deyou, Ivan Gumula, Fangfang Pang, Amra Gruhonjic, Michael Mumo, John Holleran, Sandra Duffy, Paul A. Fitzpatrick, Matthias Heydenreich, Göran Landberg, Solomon Derese, Vicky Avery, Kari Rissanen, Máté Erdélyi, Abiy Yenesew|2015|J.Nat.Prod.|78|2932|doi:10.1021/acs.jnatprod.5b00581

4a5-Dihydro[13]dioxolo[67]chromeno[34-b][13]dioxolo[45-h]chromene-11b12(12H)-diolSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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