Arylsulfonamides Analgesic Activity Structural Modifications
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Solution Overview
Problem
Current analgesics lack effective alternatives with specific structural modifications, such as a methyl group instead of a chlorine substituent and a cycloalkyl group instead of a phenyl group, which are not adequately addressed by prior compounds.
Innovation Solution
Development of compounds with the general formula I, including enantiomers, diastereomers, and salts, featuring a methyl group at the ortho position to the sulfonamide group and a cycloalkyl group in place of a phenyl group, utilizing conventional methods like carbodiimide-mediated amide formation and sulfonation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a chlorine substituent is used in the ortho position to the sulfonamide group, then analgesic activity is achieved, but the compound lacks structural versatility and has limited alternatives
Solution Approach 1:
The patent applies parameter changes by systematically varying the substituent at the ortho position from chlorine to methyl group, and the R3 group from phenyl to cycloalkyl, while maintaining the core sulfonamide structure. This allows the compound to retain analgesic activity (targeting bradykinin B1 receptors) while achieving structural versatility and exploring structure-activity relationships.
2Stability of the object's composition
If a phenyl group is used at R3, then compound stability is maintained, but the compound lacks the improved properties provided by cycloalkyl substitution
Solution Approach 1:
The patent applies local quality by specifically modifying the R3 substituent from phenyl to cycloalkyl group while keeping the rest of the molecule intact. This localized structural change at the R3 position provides improved analgesic efficacy and properties while maintaining overall compound stability through the preserved core structure.
3Ease of manufacture
If conventional analgesic structures are used, then manufacturing simplicity is maintained, but effective alternatives with specific structural modifications are lacking
Solution Approach 1:
The patent applies segmentation by dividing the analgesic compound into distinct functional segments: the core sulfonamide structure, the ortho substituent (methyl group), the R3 cycloalkyl group, and the piperazine or piperidine moiety. This segmented approach allows each component to be optimized independently while maintaining ease of manufacture through conventional synthesis methods for each segment.
Data Source
AI summary
The present invention relates to compounds of the general formula (I), wherein A, B, D, Y, R1, R2, R3, R4 und R5 are defined as mentioned in claims 1, the enantiomers, diastereomers, mixtures, and salts thereof, particularly physiologically tolerated salts with organic or inorganic acids or bases thereof, having valuable properties, the production thereof, the pharmaceuticals comprising the pharmacological effective compounds and the production and the use thereof.