Journal ArticleDOI
Two prenylated flavanones from stem bark of Erythrina burttii
TLDR
In this paper, two new flavanones were isolated from the stem bark of Erythrina burttii and characterised as 5,7-dihydroxy-4-methoxy-3,5′-di-(3-methylbut-2-enyl)flavanone (trivial name, abyssinone V-4′-methyl ether) and 5.About:
This article is published in Phytochemistry.The article was published on 1998-08-01. It has received 61 citations till now. The article focuses on the topics: Flavanone.read more
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Naturally occurring chalcones and their biological activities
Zsuzsanna Rozmer,Pál Perjési +1 more
TL;DR: The aim of this review is to summarize the various naturally occurring chalcone compounds which have been isolated from different plants to initiate further pharmacobotanical, biotechnological and medicinal studies on the field of chal cone research.
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Synthesis, stereochemistry, structural classification, and chemical reactivity of natural pterocarpans.
Journal ArticleDOI
Anti-plasmodial flavonoids from the stem bark of Erythrina abyssinica
Abiy Yenesew,Martha Induli,Solomon Derese,Jacob O. Midiwo,Matthias Heydenreich,Martin G. Peter,Hoseah M. Akala,Julia Wangui,Pamela Liyala,Norman C. Waters +9 more
TL;DR: From the ethyl acetate extract of the stem bark of Erythrina abyssinica, a new chalcone, 2',3,4,4'-tetrahydroxy-5-prenylchalcone (trivial name 5- prenylbutein) and a new flavanone along with known flavonoids have been isolated as the anti-plasmodial principles.
Journal ArticleDOI
Pterocarpans: interesting natural products with antifungal activity and other biological properties
TL;DR: A comprehensive inventory of the structures and sources of the pterocarpans is presented, and some of their most interesting biological activities are summarized.
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Protein tyrosine phosphatase-1B inhibitory activity of isoprenylated flavonoids isolated from Erythrina mildbraedii.
MinKyun Na,Jun-Pil Jang,Dieudonné Njamen,Joseph Tanyi Mbafor,Zacharias Tanee Fomum,Bo Yeon Kim,Won Keun Oh,Jong Seog Ahn +7 more
TL;DR: Bioassay-guided fractionation of an EtOAc-soluble extract of the root bark of Erythrina mildbraedii, using an in vitro PTP1B inhibitory assay, resulted in the isolation of three new isoprenylated flavonoids, abyssinone-IV-4'-O-methyl ether, which may be considered as a new class of P TP1B inhibitors.
References
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Circular dichroism, optical rotatory dispersion and absolute configuration of flavanones, 3-hydroxyflavanones and their glycosides : Determination of aglycone chirality in flavanone glycosides☆
TL;DR: In this paper, the 2 S configuration and 3-hydroxy-flavanones of 2 R, 3 R configuration, having equatorial 2-aryl substituents in the former or diequatorial 2,3-substituents of the latter, exhibit a positive Cotton effect due to the n → π * transition (∼ 330 nm) and a negative Cotton effect in the n α π ∆ * region(∼ 280-290 nm).
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Novel flavonoids from the stem of Popowia cauliflora
TL;DR: In this paper, six flavonoids, five of them novel, have been isolated from the whole stem of Popowia cauliflora and identified as: baicalein trimethyl ether, 5-hydroxy-6,7-dimethoxyflavone, 5,7,8-trimethoxyFLavanone, 2.
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Antimicrobial Agents from an East African Medicinal Plant Erythrina abyssinica
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Two bioactive pterocarpans from Erythrina burana
E. Dagne,A. A. L. Gunatilaka,David G. I. Kingston,M. Alemu,Glenn A. Hofmann,Randall K. Johnson +5 more
TL;DR: Bioactivity-directed fractionation of the CHCl3 extract of the bark of Erythrina burana afforded phaseollidin and cristacarpin that exhibited moderate but selective activity towards DNA repair-deficient yeast mutants, whereas only 1 was found to be cytotoxic.