Metalloenzyme Inhibitors Using Localized Basic Nitrogen for Selective Binding
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Solution Overview
Problem
Current metalloenzyme inhibitors face challenges in achieving a balance between potency and selectivity, leading to clinical toxicity due to indiscriminate binding to off-target enzymes, which affects the treatment of diseases and disorders.
Innovation Solution
Development of specific compounds, such as those of formula (I) or its salts, solvates, hydrates, or prodrugs, which modulate metalloenzyme activity by forming chemical interactions like sigma bonds, coordinate-covalent bonds, or weaker interactions, thereby targeting specific metalloenzymes with enhanced selectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tightly binding metal-binding group is utilized to enhance potency, then enzyme inhibition potency is improved, but selectivity for the target enzyme versus related metalloenzymes deteriorates
Solution Approach 1:
The patent introduces a basic nitrogen atom at a specific spatial location (within 4-6 Å of the metal ion) that provides localized electrostatic interaction. This localized basicity creates a focused interaction zone that enhances binding to the target enzyme's metal ion while the rest of the molecule maintains selectivity through its overall structure, thus resolving the contradiction between potency and selectivity.
Solution Approach 2:
The patent changes the binding mechanism from purely coordinate covalent bonding to a combination of coordinate covalent bonding and electrostatic interaction. By introducing a basic nitrogen atom with lone pair electrons, the molecule creates an electrostatic field that enhances metal ion binding affinity (improving potency) while the specific spatial and electronic parameters of this interaction provide discrimination against off-target enzymes (maintaining selectivity).
2Adaptability or versatility
If indiscriminate binding to metal ions is achieved, then broad enzyme coverage is improved, but clinical safety deteriorates due to toxicity
Solution Approach 1:
The patent creates a localized basic interaction zone at a specific distance from the metal ion binding site. This localized feature provides focused electrostatic interaction that enhances binding affinity without creating indiscriminate binding throughout the molecule. The spatially restricted nature of this interaction prevents off-target effects while maintaining effective binding to the intended target.
Solution Approach 2:
The basic nitrogen atom acts as an intermediary between the metal ion and the rest of the molecule. It provides a controlled interface for metal ion interaction through electrostatic forces, mediating the binding event in a way that is specific to the target enzyme's active site geometry and electrostatic environment, thereby preventing indiscriminate binding to off-target enzymes.
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
These compounds effectively modulate metalloenzyme activity, reducing the risk of clinical toxicity by selectively targeting intended enzymes, thus providing a therapeutic approach for treating diseases and disorders with improved safety and efficacy.
Implementation Method 1
forming chemical interactions like sigma bonds, coordinate-covalent bonds, or weaker interactions
Implementation Method 2
forming chemical interactions like sigma bonds, coordinate-covalent bonds, or weaker interactions
Implementation Method 3
agents which bind to and inactivate the active site metal ion dramatically decrease the activity of the enzyme
Data Source
AI summary
The instant invention describes compounds having metalloenzyme modulating activity, and methods of treating diseases, disorders or symptoms thereof mediated by such metalloenzymes.