Related Experiment Video
Updated: May 31, 2026

Flavonoid Content During the Growth and Floral Development of Calendula officinalis L.
Published on: June 27, 2025
Alkaloids and flavonoids of Argemone mexicana
Sarita Singh1, Vidya Bhushan Pandey, Tryambak Deo Singh
1Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, India.
Abstract:
A new protopine alkaloid, protomexicine and a new isoflavonoid, mexitin, together with 8-methoxydihydrosanguinarine, 13-oxoprotopine, rutin and quercetrin have been isolated from the aerial part of the methanolic extract of Argemone mexicana. The structures of these compounds have been established by various spectral data. The structure of protomexicine was further confirmed by heteronuclear multiple bond correlation experiment. Protomexicine and mexitin are new compounds, and other compounds are first reported from A. mexicana and genus Argemone.
Related Concept Videos
Physical Properties of Amines
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
Red Algae
Antifungal Agents
Cholinergic Antagonists: Chemistry and Structure-Activity Relationship
Antidotes
Specific antidotes operate by inhibiting the enzymes that control biochemical pathways, reducing the production of harmful metabolites.
An example of an antidote is atropine, which counteracts the detrimental effects of cholinesterase inhibitors. It achieves this by deactivating muscarinic receptors,...
