New dibenzothiadiazepine derivatives with antidepressant activities

¹Dipartimento Ricerche Chimiche e Farmacologiche, A. Menarini Industrie Farmaceutiche Riunite S.r.l., Firenze, Italy.

|April 1, 1991

Summary

Researchers synthesized novel thiadiazepine derivatives and tested their antidepressant potential. Compound 12 emerged as the most promising, showing high potency and low toxicity in preclinical models.

Area of Science:

Medicinal Chemistry
Neuropharmacology
Drug Discovery

Background:

Antidepressant drug discovery is crucial for treating mood disorders.
Novel chemical scaffolds are needed to overcome limitations of existing therapies.
Dibenzo[c,f][1,2,5]thiadiazepine derivatives represent a potential class of CNS-active agents.

Purpose of the Study:

To synthesize and evaluate novel 11-[(aminoalkyl)carbonyl] derivatives of 6,11-dihydrodibenzo[c,f][1,2,5]thiadiazepine 5,5-dioxide for antidepressant activity.
To investigate the structure-activity relationships (SAR) of these novel compounds.
To assess the safety profile, including anticholinergic effects and toxicity, of promising candidates.

Main Methods:

Synthesis of 11-[(aminoalkyl)carbonyl] derivatives (compounds 10-39).
Antidepressant activity screening using the apomorphine-induced hypothermia (Apo 16) test.
Evaluation of effects on reserpine-induced hypothermia.
Toxicity and anticholinergic effect assessment (physostigmine lethality) for selected compounds.
X-ray crystallographic analysis of the lead compound.

Main Results:

A series of novel thiadiazepine derivatives were successfully synthesized.
Several compounds demonstrated significant antagonism in the apomorphine-induced hypothermia test, indicating potential antidepressant activity.
Compound 12 was identified as the most potent antagonist with the lowest observed toxicity and minimal anticholinergic effects.
Structure-activity relationship analysis provided insights into the chemical features required for activity.

Conclusions:

The synthesized 11-[(aminoalkyl)carbonyl] derivatives of 6,11-dihydrodibenzo[c,f][1,2,5]thiadiazepine 5,5-dioxide show promise as novel antidepressant agents.
Compound 12 represents a lead candidate for further preclinical development due to its favorable potency, safety, and pharmacological profile.
Further investigation into the mechanism of action and in vivo efficacy of compound 12 is warranted.

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New dibenzothiadiazepine derivatives with antidepressant activities

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Background:

Purpose of the Study:

Main Methods:

Main Results:

Conclusions:

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