Conformationally Constrained 5-HT2C Modulators for Receptor Selectivity
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Solution Overview
Problem
There is a need for safe and selective serotonin 2C receptor modulators that minimize activation of the 5-HT2A and 5-HT2B receptors to avoid associated side effects while targeting CNS disorders such as obesity, depression, and anxiety, as existing compounds face challenges in achieving high selectivity due to molecular conservation within the 5-HT receptor subfamily.
Innovation Solution
Development of conformationally constrained serotonin receptor agonists, represented by compounds of Formula I, which selectively target the 5-HT2C receptor with minimal impact on peripheral tissues, reducing the risk of hallucinations and cardiac valvulopathy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing serotonin receptor modulators are used to target 5-HT2C receptor, then therapeutic benefits for CNS disorders are achieved, but activation of 5-HT2A and 5-HT2B receptors causes hallucinations and cardiac valvulopathy
Solution Approach 1:
The patent applies local quality by introducing specific substituent patterns at defined positions of the indole core structure. The indole ring system with specific substitutions at positions 1, 2, and 3 creates localized chemical features that preferentially interact with 5-HT2C receptor binding sites while avoiding 5-HT2A and 5-HT2B receptors, thus achieving selective activation without off-target effects
Solution Approach 2:
The patent employs parameter changes by systematically varying structural parameters of the serotonin modulator molecules, including ring substitution patterns, chain lengths, and functional group configurations. These parameter modifications tune the molecular properties to optimize selectivity for 5-HT2C receptor over other 5-HT2 subtypes, eliminating harmful off-target effects while preserving therapeutic benefits
2Object-affected harmful factors
If high selectivity for 5-HT2C receptor is achieved, then safety against hallucinations and cardiac valvulopathy is improved, but molecular conservation within 5-HT2 subfamily makes selectivity difficult to achieve
Solution Approach 1:
The patent applies segmentation by dividing the molecular interaction with the receptor into distinct structural segments. The indole core serves as one segment, while specific side chains and substituents at defined positions serve as additional segments. Each segment contributes independently to receptor selectivity, allowing the molecule to discriminate between conserved 5-HT2 subtypes through cumulative segment-specific interactions
Solution Approach 2:
The patent employs asymmetry by introducing non-symmetric substitution patterns on the indole ring system. The asymmetric arrangement of substituents at positions 1, 2, and 3 of the indole core creates chiral and geometric features that selectively fit the asymmetric binding pocket of 5-HT2C receptor, distinguishing it from the more conserved symmetric features of 5-HT2A and 5-HT2B receptors
Data Source
AI summary
This disclosure relates to serotonin receptor modulators, including conformationally constrained serotonin receptor agonists, and methods of making and using the same are disclosed herein.