Aromatic Compound Derivatives for Rapid Antidepressant Action and Stability

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Solution Overview

Problem

Current antidepressants have slow onset of action, low treatment response rates, and significant side effects, making them unsuitable for patients with depression, particularly those at risk of suicide, while ketamine derivatives like (2R,6R)-HNK face issues with druggability, metabolic properties, and rapid clearance.

Innovation Solution

Development of novel aromatic compounds with specific structural formulas, represented by general formula (I), which exhibit rapid and long-lasting antidepressant activity and improved druggability, metabolic properties, and increased plasma exposure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If traditional antidepressants are used, then they show antidepressant effects, but the onset is slow (2-4 weeks or longer)

Engineering Contradiction:
Improveonset speedVSAvoidtime to exhibit effect
Core Design Contradiction:
SpeedVSLoss of time

Solution Approach 1:

The patent modifies the chemical structure of ketamine by introducing specific aromatic substitutions and functional groups to create derivatives with optimized pharmacokinetic properties. This structural parameter change aims to achieve rapid antidepressant effect while improving druggability and reducing clearance rate compared to parent ketamine compound

Inventive Principle:
Principle #35Parameter changes

2Speed

If ketamine is used, then rapid antidepressant effect is achieved, but oral bioavailability is low and oral administration is difficult

Engineering Contradiction:
Improveonset speedVSAvoidoral administration feasibility
Core Design Contradiction:
SpeedVSEase of operation

Solution Approach 1:

The patent systematically modifies ketamine's molecular structure by introducing aromatic rings, hydroxyl groups, and other functional moieties to create derivatives with improved physicochemical properties. These parameter changes are designed to enhance oral bioavailability while preserving the rapid antidepressant effect, making oral administration feasible

Inventive Principle:
Principle #35Parameter changes

3Speed

If ketamine is used, then rapid antidepressant effect is achieved, but it causes side effects including psychosis-like effects, dissociative side effects, and respiratory depression

Engineering Contradiction:
Improveonset speedVSAvoidside effects
Core Design Contradiction:
SpeedVSObject-generated harmful factors

Solution Approach 1:

The patent introduces specific functional groups and structural modifications at particular positions of the ketamine molecule to selectively enhance therapeutic activity while minimizing off-target effects. This local quality modification approach aims to preserve rapid antidepressant effect while reducing psychosis-like and dissociative side effects

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

By systematically varying structural parameters such as aromatic substitutions, hydroxyl group positions, and molecular weight, the patent seeks to optimize the therapeutic window of ketamine derivatives. The goal is to achieve rapid antidepressant effect with an improved safety profile and reduced adverse reactions compared to parent ketamine

Inventive Principle:
Principle #35Parameter changes

4Speed

If ketamine is used, then rapid antidepressant effect is achieved, but long-term application may cause urinary tract dysfunction and even renal failure

Engineering Contradiction:
Improveonset speedVSAvoidurinary tract dysfunction and renal failure
Core Design Contradiction:
SpeedVSObject-generated harmful factors

Solution Approach 1:

The patent modifies ketamine's chemical structure by introducing polar functional groups and increasing molecular complexity to create derivatives with altered metabolic pathways. These parameter changes aim to reduce the formation of nephrotoxic metabolites while preserving the rapid antidepressant effect, thereby reducing long-term urinary and renal toxicity

Inventive Principle:
Principle #35Parameter changes

5Speed

If ketamine is used, then rapid antidepressant effect is achieved, but it causes euphoria, hallucinations, and is addictive

Engineering Contradiction:
Improveonset speedVSAvoideuphoria, hallucinations, and addiction
Core Design Contradiction:
SpeedVSObject-generated harmful factors

Solution Approach 1:

The patent introduces specific functional groups at strategic positions on the ketamine molecule to selectively enhance antidepressant activity at neuronal targets while reducing activation of reward pathways. This local quality modification aims to achieve rapid antidepressant effect with minimal euphoric and hallucinogenic effects

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

By optimizing molecular parameters such as lipophilicity, molecular weight, and functional group configuration, the patent seeks to create ketamine derivatives with improved therapeutic index. The goal is to preserve rapid antidepressant effect while minimizing abuse potential and psychiatric side effects

Inventive Principle:
Principle #35Parameter changes

6Speed

If (2R,6R)-HNK is used, then rapid antidepressant effect is achieved, but druggability is not good and metabolic properties are not ideal with rapid clearance

Engineering Contradiction:
Improveonset speedVSAvoiddruggability
Core Design Contradiction:
SpeedVSEase of manufacture

Solution Approach 1:

The patent systematically modifies the structural parameters of (2R,6R)-HNK by introducing aromatic rings, modifying side chains, and adjusting functional group positions to create derivatives with improved pharmacokinetic properties. These parameter changes aim to reduce clearance rate and improve druggability while preserving rapid antidepressant effect

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12351565B2Aromatic compound and preparation method therefor and use thereof
Publication Date: 2025.07.08 SHANGAI ZHIGEN PHARM & TECH CO LTD
  • US12351565B2 patent drawing
  • US12351565B2 patent drawing
  • US12351565B2 patent drawing

AI summary

The present invention relates to an aromatic compound and a preparation method therefor and the use thereof. Specifically, disclosed are a compound as shown in the following general formula (I), or a tautomer, an enantiomer, a diastereomer or a racemate thereof or a mixture thereof, or a pharmaceutically acceptable salt thereof. Also disclosed are a method for preparing the above compound and the use of same in the treatment of nervous system diseases.