Results 171 to 180 of about 2,371 (209)

A New Rotenoid from Derris malaccensis

HETEROCYCLES, 2008
A new rotenoid named 6-oxo-dehydroelliptone (2) was isolated from the roots of Derris malaccensis Prain, along with six known compounds. The isolation of dehydroelliptone (1) from a natural source and its unequivocal 1 H and 13 C NMR assignments were reported for the first time.
Kittisak Likhitwitayawuid, Ruchira Wangteeraprasert   +1 more
openaire   +1 more source

Reactions of rotenoids with hydroxylamine

Liebigs Annalen der Chemie, 1988
AbstractReaction of rotenone (1a) and amorphigenin (2a) with hydroxylamine in alkaline medium affords a mixture of the isoximes 5 and 6, and the new 6a‐NH2 spiro derivatives 12a, b and 13a, b. The structures, stereochemistry, and the mechanisms of formation of these products are discussed.
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Rotenoids from roots of Millettia pachycarpa

Phytochemistry, 1982
Abstract Roots of Millettia pachycarpa furnished retenone, cis -12a-hydroxyrotenone, rot-2′-enonic acid and cis -12a-hydroxyrot-2′-enonic acid.
Ashok Kumar Singhal, Ram Prakash Sharma, Jogendra Nath Baruah, Serengolam V. Govindan, Werner Herz   +4 more
openaire   +1 more source

Biosynthesis of the rotenoid amorphigenin in germinating Amorpha fruticosa seeds: the pre-rotenoid (isoflavonoid) stages

Journal of the Chemical Society D: Chemical Communications, 1971
Insertion of the rotenoid ‘extra’ C-6 methylene occurs at the isoflavone (IIIa), rather than the isoflavanone (IVa), level of oxidation, in the biosynthesis of amorphigenin; earlier stages use chalcone (Va) with a free 4-hydroxy-group, but the biosynthetically acceptable isoflavone which emerges is not (VIa) but its methyl ether (VIb).
L. Crombie, P. M. Dewick, D. A. Whiting
openaire   +1 more source

Synthesis of rotenoid derivatives with cancer and topoisomerase II inhibitory activities

To investigate the structure-activity relationship of rotenoid compounds on cytotoxicity and topoisomerase II inhibition. It has been reported that 6-deoxyclitoriacetal, a rotenoid substance extracted from the dried root of Stemona collinse Craib ...
Supranee Sangtong
semanticscholar   +1 more source

Structure-activity relationship on cytotoxicity of rotenoid compounds

6-Deoxyclitoriacetal (1) and stemonal (2) are rotenoid substances extracted from the dried root of Stemona collinse Craib. Only 1 has been known to have cytotoxic activity against various types of human carcinoma.
Pitiporn Chimsook
semanticscholar   +1 more source

[Rotenoids from Derris trifoliata].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2008
Five rotenoids named dehydrodeguelin, dehydrorotenone, 12a-hydroxy rotenone, tephrosin and 12alphabeta-hydroxyrot-2'-enonic acid were isolated from aerial parts of Derris trifoliata. All these compounds were isolated from this plant for the first time.
Lu-Rong, Xu, Shan, Li, Jun, Wu, Si, Zhang   +3 more
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Chemistry of the Natural Rotenoids

1963
In many warm countries of the world the natives fish by throwing preparations of crushed plant material into ponds and streams. These preparations cause stupefaction of the fish, which rise to the surface and are collected. Plants which are frequently employed in South America, tropical Africa, the East Indies and Malaya belong to the Papilionatae sub ...
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A New Rotenoid Derivative from the Aerial Part of Boerhavia erecta

Chemistry of Natural Compounds, 2022
L. Do, T. T. Nguyen, P. K. Nguyen, T. L. Tuong, T. N. Vo, J. Sichaem   +5 more
semanticscholar   +1 more source

Present Status of Rotenone and Rotenoids

Journal of Economic Entomology, 1941
One of the most amazing developments in American agriculture during the past decade has been the rapid growth in the use of derris, cube, timbo, and barbasco as insecticides. These plants, all closely related botanically and belonging to the family Fabaceae, owe their toxicity to rotenone and a group of structurally related compounds called rotenoids.
openaire   +1 more source