Results 141 to 150 of about 600 (168)
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An Nmr Study of Four Benzophenanthridine Alkaloids
Journal of Natural Products, 1991A new dihydrobenzo[c]phenanthridine alkaloid, 12-methoxydihydrochelerythrine {1}, has been isolated from a lipophilic extract of the leaves of Bocconia integrifolia together with three known compounds, dihydrochelerythrine {2}, dihydrosanguinarine {3}, and dihydrochelirubine {4}.
S. M. Oechslin +6 more
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ChemInform Abstract: Benzophenanthridine Alkaloids from Zanthoxylum rhoifolium.
ChemInform, 1998AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
N. F. DE MOURA +5 more
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Journal of Natural Products, 2021
Reduction of an iminium C═N double bond is the most important phase I metabolism process associated with the cytotoxic property of quaternary benzophenanthridine alkaloids (QBAs). Inspired by the light-mediated reduction of QBAs with nicotinamide adenine dinucleotide, a visible-light-promoted reductive functionalization reaction of QBAs is reported in ...
Lin Wang +8 more
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Reduction of an iminium C═N double bond is the most important phase I metabolism process associated with the cytotoxic property of quaternary benzophenanthridine alkaloids (QBAs). Inspired by the light-mediated reduction of QBAs with nicotinamide adenine dinucleotide, a visible-light-promoted reductive functionalization reaction of QBAs is reported in ...
Lin Wang +8 more
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A New Benzophenanthridine Alkaloid from Zanthoxylum nitidum
Chinese Journal of Natural Medicines, 2009Abstract Aim To study the chemical constituents of the roots and stems of Zanthoxylum nitidum (Roxb.) DC.. Methods Silica gel and Sephadex LH-20 column chromatography were used to isolate and purify the constituents. Various spectroscopic analyses were involved to elucidate the structures.
Di GENG +4 more
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Uncoupling of photosynthetic phosphorylation by benzophenanthridine alkaloids
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1973Abstract Sanguinarine, chelerythrine and chelidonine, benzophenanthridine alkaloids, inhibited both photosynthetic phosphorylation associated with ferricyanide reduction and cyclic photophosphorylation catalyzed by phenazine methosulphate. They did not affect electron transport in the presence of ADP and Pi and stimulated it in their absence.
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Toddalidimerine, a dimeric benzophenanthridine alkaloid from Toddalia asiatica
Phytochemistry, 1981Abstract Toddalidimerine, a new dimeric benzophenanthridine alkaloid, has been isolated from the roots of Toddalia asiatica . On the basis of spectral analysis it has been characterized as 1,3-(8-hydrochelerythrinyl-8′-hydro- N -norchelerythrinyl) acetone.
Padam N. Sharma +3 more
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Inhibition of Reverse Transcriptase Activity by Benzophenanthridine Alkaloids
Journal of Natural Products, 1979Benzophenanthridine alkaloids, fagaronine 4, O-methylfagaronine 5, nitidine 1, allonitidine 3 and methoxydihydronitidine 2 have been shown to posses inhibitory activity against reverse transcriptase of RNA tumor viruses. The enzyme inhibition (50%) by these alkaloids was found in the range of 6-60 microgram per milliliter of the reaction mixture when ...
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Benzophenanthridine Alkaloids from Callus Cultures of Toddalia Asiatica
International Journal of Pharmaceutical Sciences and Nanotechnology, 2015Benzophenenathridine alkaloids nitidine and chelerythrine production from callus cultures of Toddalia asiatica was investigated. Callus cultures were initiated on Murashige and Skoogs medium fortified with different hormonal combinations. Nitidine and chelerythrine levels in callus culture extracts was analyzed by high performance liquid chromatography
Ciddi Veeresham, Praveena Chinthala
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Sequence‐selective, pH‐dependent binding to DNA of benzophenanthridine alkaloids
Journal of Molecular Recognition, 1990AbstractThe sequence selectivity associated with binding to DNA of three alkaloids belonging to the benzophenanthridine family has been analysed by DNase I footprinting, and the results were compared with those obtained from an analysis of the behaviour of the standard intercalator, ethidium bromide.
N P, Bajaj +3 more
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Molecular targets and anticancer potential of sanguinarine—a benzophenanthridine alkaloid
Phytomedicine, 2017Cancer is an enormous global health burden, and should be effectively addressed with better therapeutic strategies. Currently, over 60% of the clinically approved anticancer agents are either directly isolated from natural sources or are modified from natural lead molecules.
Sehamuddin, Galadari +3 more
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