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Related Concept Videos

Adrenergic Agonists: Chemistry and Structure-Activity Relationship01:16

Adrenergic Agonists: Chemistry and Structure-Activity Relationship

Adrenergic agonists' structure-activity relationship (SAR) determines their selectivity and efficacy. These agonists comprise a phenylethylamine moiety with an aromatic ring and an ethylamine side chain.
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of the aromatic...
Aromatic Compounds: Overview01:25

Aromatic Compounds: Overview

In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
In 1825, Faraday isolated benzene...
Nomenclature of Alkynes02:39

Nomenclature of Alkynes

Alkynes are unsaturated hydrocarbons characterized by the presence of carbon-carbon triple bonds and have a general formula CnH2n-2. The nomenclature of alkynes follows a set of rules similar to alkanes and alkenes; however, alkynes bear the suffix "-yne" instead of "-ane" or "-ene." There are two approaches to naming alkynes:
Adrenergic Antagonists: Chemistry and Classification of ɑ-Receptor Blockers01:17

Adrenergic Antagonists: Chemistry and Classification of ɑ-Receptor Blockers

Adrenergic antagonists, or sympatholytics, inhibit adrenoceptor activation driven by catecholamines or agonists. Based on their adrenoceptor specificity, adrenergic blockers can be categorized into two primary groups: α-adrenergic blockers (α-blockers) and β-adrenergic blockers (β-blockers). α-blockers interact with α1 and α2 subtypes of α-adrenoceptors.
Nonselective α-blockers: Nonselective α-blockers contain haloalkylamine or imidazoline moieties. Phenoxybenzamine, with a haloalkylamine...
Antiasthma Drugs: Methylxanthines01:24

Antiasthma Drugs: Methylxanthines

Theophylline, a member of the methylxanthine class of bronchodilators, has long been used in asthma management. While its exact mechanism of action is not fully understood, it is believed to have multiple effects on various cellular processes.
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Direct-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship01:22

Direct-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship

Cholinergic agonists or cholinomimetics mimic the action of acetylcholine to stimulate the parasympathetic nervous system. They are categorized into direct-acting and indirect-acting agents. The direct-acting cholinergic drugs induce the parasympathetic response by directly binding to the muscarinic or nicotine receptors. In comparison, the indirect-acting cholinergic drugs prevent acetylcholine hydrolysis, indirectly contributing to the extended parasympathetic response.
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Related Experiment Video

Updated: May 17, 2026

Green Synthesis, Characterization, Encapsulation, and Measurement of the Release Potential of Novel Alkali Lignin Micro-/Submicron Particles
07:42

Green Synthesis, Characterization, Encapsulation, and Measurement of the Release Potential of Novel Alkali Lignin Micro-/Submicron Particles

Published on: March 1, 2024

Phenylpropanoids and lignanoids from Euonymus acanthocarpus.

Jia Xian Zhu1, Jie Ren, Jiang Jiang Qin

  • 1School of Pharmacy, Shanghai Jiao Tong University, China.

Archives of Pharmacal Research
|November 10, 2012
PubMed
Summary

Researchers isolated 25 compounds from Euonymus acanthocarpus, including novel phenylpropanoids and lignans. Some compounds exhibited weak cytotoxicity against human tumor cell lines, suggesting potential for further investigation.

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Ultrafast Lignin Extraction from Unusual Mediterranean Lignocellulosic Residues
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Last Updated: May 17, 2026

Green Synthesis, Characterization, Encapsulation, and Measurement of the Release Potential of Novel Alkali Lignin Micro-/Submicron Particles
07:42

Green Synthesis, Characterization, Encapsulation, and Measurement of the Release Potential of Novel Alkali Lignin Micro-/Submicron Particles

Published on: March 1, 2024

Ultrafast Lignin Extraction from Unusual Mediterranean Lignocellulosic Residues
09:22

Ultrafast Lignin Extraction from Unusual Mediterranean Lignocellulosic Residues

Published on: March 9, 2021

Area of Science:

  • Natural Product Chemistry
  • Phytochemistry
  • Pharmacology

Background:

  • Euonymus acanthocarpus is a plant species within the Celastraceae family.
  • The chemical constituents of Euonymus species are of interest for their potential biological activities.
  • Isolation and characterization of novel compounds from plant sources contribute to the discovery of new therapeutic agents.

Purpose of the Study:

  • To isolate and identify chemical constituents from the stems and twigs of Euonymus acanthocarpus.
  • To evaluate the cytotoxic activity of the isolated compounds against human tumor cell lines.

Main Methods:

  • Phytochemical investigation involving isolation techniques such as chromatography.
  • Structure elucidation of isolated compounds using spectroscopic methods.
  • Cytotoxicity assays against SK-OV-3 (ovarian cancer) and MCG-803 (gastric cancer) human tumor cell lines.

Main Results:

  • A total of 25 compounds were isolated, including one new phenylpropanoid derivative, phenylpropanoids, lignans, neolignans, and flavonolignans.
  • Several compounds were reported for the first time from the Celastraceae family or the Euonymus genus.
  • Compounds 3, 10, 12, and 18 demonstrated weak cytotoxicity against the SK-OV-3 cell line.
  • Compounds 3-4, 10-13, and 19 showed weak cytotoxicity against the MCG-803 cell line.

Conclusions:

  • The phytochemical analysis of Euonymus acanthocarpus yielded a diverse array of phenylpropanoids and lignans.
  • The observed weak cytotoxic activities suggest that some isolated compounds may warrant further investigation for anticancer potential.
  • This study expands the knowledge of the chemical diversity within the Euonymus genus and the Celastraceae family.