Related Experiment Video
Updated: May 20, 2026

Polygraphic Recording Procedure for Measuring Sleep in Mice
Published on: January 25, 2016
Wake-promoting agents: search for next generation modafinil: part IV
Philippe Louvet1, Dominique Schweizer, Marie-Edith Gourdel
1Cephalon (France), Paris, France.
Researchers developed new wakefulness-promoting agents based on diphenyl ether structures, seeking alternatives to modafinil. They isolated and studied the individual enantiomers of a promising compound to understand their distinct effects.
Area of Science:
- Medicinal Chemistry
- Neuroscience
- Pharmacology
Background:
- Modafinil is a wakefulness-promoting agent.
- There is a need for novel agents with improved profiles.
- Diphenyl ether derivatives were explored as potential candidates.
Purpose of the Study:
- To synthesize and evaluate novel diphenyl ether derivatives for wakefulness-enhancing properties.
- To investigate the individual pharmacological profiles of chiral enantiomers of a lead compound.
Main Methods:
- Synthesis of a series of diphenyl ether derived compounds.
- In vivo testing in rat models to assess wakefulness enhancement.
- Chiral separation of racemic compound 16 into its enantiomers.
- Individual profiling of the separated enantiomers.
Main Results:
- Several diphenyl ether derivatives demonstrated wakefulness-enhancing activity in rats.
- Racemic compound 16 showed significant potential.
- The separated enantiomers of compound 16 were obtained for individual assessment.
Conclusions:
- Diphenyl ether derivatives represent a promising class of molecules for developing next-generation wakefulness-promoting agents.
- Further investigation of the individual enantiomers is crucial to understand structure-activity relationships and optimize therapeutic potential.
More Related Videos
Related Concept Videos
CNS Stimulants: Psychedelic Agents
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
Drugs Acting on Autonomic Ganglia: Stimulants
Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...
Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists
Stimulants
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
Adrenergic Agonists: Indirect-Acting Agents
One mechanism involves depleting stored catecholamines by displacing them from synaptic vesicles. These agents, known as "displacers," are transported into vesicles at the expense of noradrenaline. Examples include amphetamine and tyramine, which lack a catechol moiety, resulting in prolonged action, improved oral bioavailability, and...

