Neuroactive Steroid GABA Modulators for CNS Excitability Control
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Solution Overview
Problem
There is a need for new compounds that can modulate brain excitability and treat CNS-related disorders, as existing agents like benzodiazepines have limitations and new neuroactive steroids are required to improve therapeutic options.
Innovation Solution
Development of compounds, such as those in Formula (I), which act as GABA modulators, specifically targeting the GABA A receptor to regulate chloride ion flow and influence brain excitability, thereby treating CNS-related disorders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing agents like benzodiazepines are used to modulate brain excitability, then therapeutic effects are achieved, but limitations in efficacy and side effects persist
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of neuroactive steroids through systematic variation of substituents at positions 1, 2, 6, 7, 16, and 17 of the steroid nucleus. This structural parameter optimization aims to enhance GABA_A receptor modulatory efficacy while reducing side effects associated with conventional benzodiazepines, thereby improving the therapeutic profile through precise molecular parameter tuning
2Reliability
If new neuroactive steroid compounds are developed to improve therapeutic options, then treatment effectiveness increases, but compound complexity and development requirements increase
Solution Approach 1:
The patent applies segmentation by dividing the complex steroid molecule into distinct functional regions: the core steroid nucleus and variable substituent positions (1, 2, 6, 7, 16, 17). This modular approach allows independent optimization of each region's properties, enabling systematic development of multiple analogs with tailored activities while managing overall molecular complexity through structured design
Solution Approach 2:
The patent systematically varies chemical parameters including substituent types, positions, and stereochemistry at multiple locations on the steroid framework. This parameter space exploration generates a library of compounds with differentiated pharmacological profiles, allowing selection of optimal candidates that balance effectiveness with manageable complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compounds effectively modulate brain excitability and treat conditions like depression, schizophrenia, and seizure disorders by interacting with the GABA A receptor, providing therapeutic benefits.
Implementation Method 1
GABA interacts with its recognition site on the GRC to facilitate the flow of chloride ions down an electrochemical gradient of the GRC into the cell
Data Source
AI summary
Provided herein is a compound of Formula (I) or a pharmaceutically acceptable salt thereof, wherein R1a, R1b, R2a, R2b, R3, R4a, R4b, R5, R6a, R6b, R7a, R7a, R11a, R11b, R12a, R12b, R16a, R16b, R19, R11a, R22, RX, RY and n are defined herein. Also provided herein are pharmaceutical compositions comprising a compound of Formula (I) and methods of using the compounds, e.g., in the treatment of CNS-related disorders.