Journal ArticleDOI
New chromenochalcones from Flemingia
TLDR
In this article, Flemingin- E and F have been isolated from inflorescences of Flemingia congesta, together with two other chalcones, which are allylic alcohols with an additional OH group in the side chain.About:
This article is published in Phytochemistry.The article was published on 1973-08-01. It has received 10 citations till now. The article focuses on the topics: Flemingia & Chalcone.read more
Citations
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Journal ArticleDOI
Flemingins G-O, cytotoxic and antioxidant constituents of the leaves of Flemingia grahamiana.
TL;DR: Nine new chalcones, named flemingins G-O (4-12), along with deoxyhomoflemingin and emodin, were isolated from a leaf extract of Flemingia grahamiana and were found to have a geranyl substituent modified into a chromene ring possessing a residual chain, as shown by spectroscopic methods.
Journal ArticleDOI
Competitive neutrophil elastase inhibitory isoflavones from the roots of Flemingia philippinensis
TL;DR: The prenyl functionality of isoflavones significantly affected inhibitory potencies and mechanistic behavior by shifting the competitive mode to a noncompetitive one.
Journal ArticleDOI
Naturally occurring prenylated chalcones from plants: structural diversity, distribution, activities and biosynthesis.
Kang Zhou,Song Yang,Shu-Ming Li +2 more
TL;DR: Naturally occurring chalcones carrying up to three modified or unmodified C5-, C10-, and C15-prenyl moieties on both rings A and B as well as at the α- and β-carbons are widely distributed in plants of the families of Fabaceae, Moraceae, Zingiberaceae and Cannabaceae.
Book ChapterDOI
Advances in the Chemistry of Charom-3-enes
TL;DR: In this article, the authors focus on the advances in the chemistry of chrom-3-enes and their derivatives, focusing on the behavior of 2,2-dialkyl chromenes.
Journal ArticleDOI
Flemingin-Type Prenylated Chalcones from the Sarawak Rainforest Plant Desmodium congestum.
Karlee A. Rees,Cindy Bermudez,David Edwards,Alysha G. Elliott,Jovita E. Ripen,Cynthia Seta,Johnny X. Huang,Mark E. Cooper,James A. Fraser,Tiong Chia Yeo,Mark S. Butler +10 more
TL;DR: Two new prenylated chalcones were isolated, closely related to the flemingins previously isolated from various Flemingia species, which exhibited moderate activity against a panel of Gram-positive bacteria and were also cytotoxic to the HEK293 human embryonic kidney cell line.
References
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Journal ArticleDOI
Natural Chromenes—III: Colouring matters of wars: the structure of flemingins a, b, c and homoflemingin
TL;DR: In this article, four new chalcones, Flemingins A, B and C (I, II, III) and homoflemingin (IV) have been isolated from the dichloroethylene extract of the drug Wars, obtained from the seeds of Flemingia rhodocarpa Baker.
Journal ArticleDOI
Sur quelques oxydations de type biogénétique
TL;DR: In this paper, the synthesis of photo-oxydation photosensibilisee des olefines of quelques substances naturelles is discussed. But the authors do not specify the type of synthesized substances.
Journal ArticleDOI
Farbstoffsensibilisierte Photo‐Oxygenierung von(−)‐cis‐Pulegol und (+)‐Pulegon. Zur Addition von O2(1Δg) an Doppelbindungen mit allylständiger. Hydroxyl‐ oder Carbonyl‐Gruppe
TL;DR: The product distributions and structures of the peroxides (B-E) have been derived from analysis of their reduction products as discussed by the authors, and the course of addition of O2(1Δg) on 1 and 2 was found in all cases to be independent of solvent and photosensitizer.
Journal ArticleDOI
Photosensitized oxygenation of α-farnesene
Gwk Cavill,I. M. Coggiola +1 more
TL;DR: In this paper, the photosensitized oxygenation of α-farnesene gave a series of hydroperoxides, including trimethyldodecan, trien, and trien-4-ol.