Journal article

Chemical constituents of the root bark of Erythrina droogmansiana


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Author list: Bedane Kibrom Gebreheiwot, Kusari Souvik, Bullach Anke, Masesane Ishmael B., Mihigo Shetonde O., Spiteller Michael, Majinda Runner R. T.

Publisher: ELSEVIER

Publication year: 2017

Journal name in source: PHYTOCHEMISTRY LETTERS

Volume number: 20

End page: 88

ISSN: 1874-3900

URL: https://www.sciencedirect.com/science/article/abs/pii/S1874390016302130

Languages: English



Two new compounds namely 7,4′-dihydroxy-2′-methoxy-3′-(3-methylbut-2-enyl)isoflavanone (1) and 5,7,3′-trihydroxy-8-(3-methylbut-2-enyl)-[6′′,6′′-dimethylpyrano(2′′,3′′:4′,5′)]isoflavone (4) were isolated from the root bark of Erythrina droogmansiana together with eight known compounds. Their structures were elucidated on the basis of spectroscopic analyses (1D- and 2D-NMR and ESI-HRMS) and by comparison with literature data. In addition, the correct 13C NMR of 5,7,2′,4′-tertahydroxy-8,5′-di-(3-metylbut-2-enyl)isoflavone (6) was assigned. The DPPH free radical scavenging properties of the isolated compounds were evaluated. Compounds 4–7 showed weak to moderate DPPH free radical scavenging activities.


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Last updated on 2022-29-11 at 11:33