Results 181 to 190 of about 7,024 (237)
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Cardenolides from the leaves of Nerium oleander.
Fitoterapia, 2018Six new cardenolides (1-6), including three 14-hydroxylated cardenolides and three 14-carbonylated cardenolides were isolated from the dried aerial parts of Nerium oleander Linn in addition to twenty-seven known compounds (7-33).
Yuanyang Cao +5 more
semanticscholar +1 more source
Chemistry of Natural Compounds, 2005
3-Keto-derivatives of the cardenolides digitoxigenin and cardiogenin were prepared with subsequent conversion to new ketoimines (1–19, 24–44), the oxime (23), and for the first time to pure cardiogenin (14,16-dianhydrogitoxigenin, 20), its acetate (21), and cardiogenone (22). Their physicochemical properties were described.
I. F. Makarevich +2 more
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3-Keto-derivatives of the cardenolides digitoxigenin and cardiogenin were prepared with subsequent conversion to new ketoimines (1–19, 24–44), the oxime (23), and for the first time to pure cardiogenin (14,16-dianhydrogitoxigenin, 20), its acetate (21), and cardiogenone (22). Their physicochemical properties were described.
I. F. Makarevich +2 more
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Toxicology Letters, 2018
Two isoforms of a ligand-activated nuclear receptor, RORγ and RORγT, have been implicated in various physiological functions, including energy metabolism, circadian rhythm and immune system development.
Kaja Karaś +6 more
semanticscholar +1 more source
Two isoforms of a ligand-activated nuclear receptor, RORγ and RORγT, have been implicated in various physiological functions, including energy metabolism, circadian rhythm and immune system development.
Kaja Karaś +6 more
semanticscholar +1 more source
Journal of Fluorine Chemistry, 1985
Abstract For estimation of the influence of fluorination at C21 of the lactone ring of cardenolides on their cardiac activity we have synthesized 21α- and 21β-fluoro-cardenolides by treatment of 21β-bromo-cardenolides with AgF. Prior to allylic bromination of cardenolides their OH- groups are protected by CCl 3 CH 2 OCO- groups and deprotected after ...
R. Megges +5 more
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Abstract For estimation of the influence of fluorination at C21 of the lactone ring of cardenolides on their cardiac activity we have synthesized 21α- and 21β-fluoro-cardenolides by treatment of 21β-bromo-cardenolides with AgF. Prior to allylic bromination of cardenolides their OH- groups are protected by CCl 3 CH 2 OCO- groups and deprotected after ...
R. Megges +5 more
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Partialsynthesen von Cardenoliden und Cardenolid‐Analogen. VIII. Lactonring‐alkylierte Cardenolide
Journal für Praktische Chemie, 1983Partial Syntheses of Cardenolides and Cardenolide Analogues. VIII. Lactone Ring‐Alkylated CardenolidesBase‐catalyzed alkylation of digitoxigenin (1), digitoxin (2), digoxigenin (3), and gitoxigenin‐3,16‐diacetate (4) with allyl bromide, allyl chloride or n‐propyl bromide in DMF resulted in the formation of the 22‐allyl‐, 21ξ,22‐diallyl‐, 22‐propyl ...
Barbara Streckenbach +4 more
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SYNTHETIC CARDENOLIDES AND RELATED PRODUCTS
Pure and Applied Chemistry, 1970Abstract
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Cardenolide analogues. 3. A fast thin layer Chromatographic separation of cardenolide diastereomers
Steroids, 1978Cardenolide diasteromeric mixtures may be analytically separated on 2.5 x 6.5 cm x 0.25 mm pre-coated silical gel 60 F-250 (EM) tlc plates (cut from 20 x 20 cm plates). Three successive developments in mixtures of CH2Cl2-EtOAc-MeOH achieve complete separation of diastereomers in less than 15 minutes, and 2--6 micrograms of sample is sufficient.
K, Yoshioka, D S, Fullerton
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Ring-D fragmentation of cardenolides
Biological Mass Spectrometry, 1977The major fragmentation paths typical for the cardenolides system have been elucidated by labelling studies.
E, Flaskamp, H, Budzikiewicz
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Pharmacognosy Magazine, 2019
Background: Calotropis gigantea (L.) Dryand, belonging to the family Apocynaceae is a source of many bioactive cardenolides. However, inadequate accumulation of these cardenolides within this plant restricts their economic isolation.
P. Singh +6 more
semanticscholar +1 more source
Background: Calotropis gigantea (L.) Dryand, belonging to the family Apocynaceae is a source of many bioactive cardenolides. However, inadequate accumulation of these cardenolides within this plant restricts their economic isolation.
P. Singh +6 more
semanticscholar +1 more source