Results 1 to 10 of about 4,729 (242)

Differential accumulation of cardenolides from Asclepias curassavica by large milkweed bugs does not correspond to availability in seeds or biological activity on the bug Na+/K+-ATPase [PDF]

open access: goldFrontiers in Ecology and Evolution, 2023
Milkweed–herbivore systems are characterized by cardenolide chemical defenses and specialized herbivore adaptations such as physiological target site insensitivity.
Paola Rubiano-Buitrago   +6 more
doaj   +2 more sources

New CNS depressant cardenolide glycoside from the roots of Nerium oleander

open access: goldResults in Chemistry, 2020
A new central nervous system (CNS) depressant cardenolide glycoside named nerioleanderoside (1) was isolated from active n-butanol fraction of the aqueous- ethanolic (5:95 v/v) extract of the fresh dried roots of Nerium oleander.
Ghanshyam Tiwari   +3 more
doaj   +2 more sources

Aphid Resistance Segregates Independently of Cardenolide and Glucosinolate Content in an Erysimum cheiranthoides (Wormseed Wallflower) F2 Population [PDF]

open access: yesPlants
Plants in the genus Erysimum produce both glucosinolates and cardenolides as a defense mechanism against herbivory. Two natural isolates of Erysimum cheiranthoides (wormseed wallflower) differed in their glucosinolate content, cardenolide content, and ...
Mahdieh Mirzaei   +5 more
doaj   +2 more sources

Relative Selectivity of Plant Cardenolides for Na+/K+-ATPases From the Monarch Butterfly and Non-resistant Insects

open access: goldFrontiers in Plant Science, 2018
A major prediction of coevolutionary theory is that plants may target particular herbivores with secondary compounds that are selectively defensive.
Georg Petschenka   +5 more
doaj   +2 more sources

New Structures, Spectrometric Quantification, and Inhibitory Properties of Cardenolides from Asclepias curassavica Seeds [PDF]

open access: yesMolecules, 2022
Cardiac glycosides are a large class of secondary metabolites found in plants. In the genus Asclepias, cardenolides in milkweed plants have an established role in plant–herbivore and predator–prey interactions, based on their ability to inhibit the ...
Paola Rubiano-Buitrago   +3 more
doaj   +2 more sources

Chemoenzymatic synthesis of the cardenolide rhodexin A and its aglycone sarmentogenin [PDF]

open access: yesBeilstein Journal of Organic Chemistry
Herein, we report a concise chemoenzymatic synthesis of the cardenolide rhodexin A in 9 steps and the first protecting-group-free synthesis of its aglycone sarmentogenin in 7 steps from 17-deoxycortisone. The synthesis features a scalable enzymatic C14–H
Fuzhen Song   +4 more
doaj   +2 more sources

Thevetia thevetioides Cardenolide and Related Cardiac Glycoside Profile in Mature and Immature Seeds by High-Resolution Thin-Layer Chromatography (HPTLC) and Quadrupole Time of Flight–Tandem Mass Spectrometry (Q-TOF MS/MS) Reveals Insights of the Cardenolide Biosynthetic Pathway [PDF]

open access: yesMolecules
Thevetia thevetioides is a species within the Apocynaceae family known for containing cardenolide-glycosides, commonly referred to as cardiac glycosides, which are characteristic of this genus.
Juan Vázquez-Martínez   +2 more
doaj   +2 more sources

Strophanthus sarmentosus Extracts and the Strophanthus Cardenolide Ouabain Inhibit Snake Venom Proteases from Echis ocellatus [PDF]

open access: yesMolecules
Strophanthus sarmentosus is recognised for various ethnomedicinal applications, including treatment after snakebites. However, only limited scientific evidence exists on its antivenomous capabilities.
Julius Abiola   +4 more
doaj   +2 more sources

Substrate Specificity of ABCB Transporters Predicted by Docking Simulations Can Be Confirmed by Experimental Tests [PDF]

open access: yesMolecules
ATP-binding cassette (ABC) transporters, particularly those of subfamily B, are involved in cell detoxification, multidrug resistance, drug treatment pharmacodynamics, and also ecological adaptation.
Mario Röpcke   +5 more
doaj   +2 more sources

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