Pyrrole Compounds for Acid-Stable Proton Pump Inhibition
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Solution Overview
Problem
Existing proton pump inhibitors are unstable under acidic conditions, exhibit variable treatment effects due to metabolic enzyme polymorphism, and interact with other medications, leading to suboptimal efficacy and side effects in treating peptic ulcers and reflux esophagitis.
Innovation Solution
A compound represented by the formula (I), specifically designed with a pyridyl group and fluorine substitutions, which acts as a potassium-competitive acid blocker (P-CAB) to reversibly inhibit proton pumps, providing rapid action and reduced toxicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If existing proton pump inhibitors are formulated as enteric preparations to protect from acidic degradation, then stability under acidic conditions is improved, but onset of action is delayed requiring several hours and about 5 days for maximum efficacy
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of proton pump inhibitors to change their stability parameters. Specifically, the invention uses pyrrole compounds with specific substituents (formula I) that have improved acid stability without requiring enteric coating, allowing rapid onset of action while maintaining stability under acidic conditions.
2Reliability
If existing proton pump inhibitors are used to suppress gastric acid secretion, then acid secretion suppression effect is achieved, but variable treatment effects occur due to metabolic enzyme polymorphism and drug interaction
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure to reduce dependence on metabolic enzymes. The pyrrole compound (formula I) with specific substituents demonstrates reduced variability in treatment effects and reduced drug interactions compared to conventional proton pump inhibitors, improving reliability while minimizing harmful metabolic factors.
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 compound (I) demonstrates superior proton pump inhibitory effects, stability under acidic conditions, and minimal toxicity, allowing for rapid gastric acid secretion suppression and improved treatment outcomes for peptic ulcers and related conditions without the need for enteric coating, making it suitable for various gastrointestinal disorders.
Implementation Method 1
a compound represented by the formula (I)... acts as a potassium-competitive acid blocker (P-CAB) to reversibly inhibit proton pumps
Data Source
AI summary
The present invention relates to a compound represented by the formula:wherein A is pyridyl group having at least one substituentwherein R1, R2 and R3 are each a hydrogen atom, a halogen atom, a C1-6 alkyl group optionally substituted by halogen or a C1-6 alkoxy group optionally substituted by halogen, R4 and R6 are each a hydrogen atom, a halogen atom or a C1-6 alkyl group optionally substituted by halogen, R5 is a hydrogen atom, a halogen atom, a C1-6 alkyl group optionally substituted by halogen or a C1-6 alkoxy group optionally substituted by halogen, and R7 is a hydrogen atom or a C1-6 alkyl group optionally substituted by halogen or a salt thereof, or a pharmaceutical composition containing the same.