4-Amino-Pyrimidine Derivatives as H4 Receptor Antagonists
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Solution Overview
Problem
Current treatments for allergic, immunological, and inflammatory diseases lack effective H4 histamine receptor antagonists with high affinity and specificity, leading to inadequate therapeutic outcomes and side effects.
Innovation Solution
Development of 4-amino-pyrimidine derivatives that act as potent H4 histamine receptor antagonists, designed to bind specifically to the H4 receptor with minimal affinity for other receptors, formulated into pharmaceutical compositions for therapeutic use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current treatments are used for allergic, immunological, and inflammatory diseases, then existing therapeutic options are available, but they lack effective H4 histamine receptor antagonists with high affinity and specificity leading to inadequate therapeutic outcomes and side effects
Solution Approach 1:
The patent applies local quality by designing the 4-amino-pyrimidine derivative molecule with specific functional groups positioned at particular locations to achieve selective binding to the H4 receptor. The molecular structure contains specific substituents at defined positions (R1-R6 groups) that create localized interaction zones with the H4 receptor binding site, enabling high affinity and specificity while avoiding interactions with other histamine receptors (H1, H2, H3), thereby providing effective therapeutic outcomes with reduced side effects.
2Reliability
If 4-amino-pyrimidine derivatives are designed to bind specifically to the H4 receptor, then high affinity and specificity are achieved, but the molecular structure complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the 4-amino-pyrimidine derivative molecule into distinct functional segments: a core pyrimidine ring structure (providing the amino group for H4 receptor interaction) and separate substituent groups (R1-R6) that can be independently optimized. This modular approach allows each segment to contribute specifically to different aspects of receptor binding, achieving high affinity and specificity while maintaining a systematic and manageable molecular architecture rather than a completely complex structure.
Data Source
AI summary
4-Amino-pyrimidine derivatives of Formula (I), wherein the meaning of the different substituents are those indicated in the description. These compounds are useful as histamine H4 receptor antagonists.