Imidazopyridine Compounds Modulating Iron for Neurological Disease Treatment
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Solution Overview
Problem
Current treatments for neurological disorders such as Parkinson's disease and Alzheimer's disease are inadequate in managing excessive biological metals like iron, which contribute to oxidative stress and neuronal damage, as existing compounds lack the necessary properties for effective modulation and delivery.
Innovation Solution
Development of specific compounds, such as those described by formula (I), which can modulate iron levels in the central nervous system, offering properties like oral deliverability, low toxicity, and kinetic stability, thereby addressing the imbalance of biological metals associated with these disorders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing compounds are used to treat neurological disorders, then treatment is provided, but they lack the necessary properties for effective modulation and delivery of iron levels
Solution Approach 1:
The patent modifies molecular parameters of iron-modulating compounds to achieve optimal properties including oral deliverability, low toxicity, and kinetic stability. Specific structural parameters such as lipophilicity, molecular weight, and functional group composition are adjusted to enhance blood-brain barrier penetration while maintaining iron modulation efficacy.
Solution Approach 2:
The invention develops compounds with composite molecular structures that integrate multiple functional moieties: iron-binding sites, brain-penetrating groups, and metabolic stability elements. This composite approach creates molecules that simultaneously achieve delivery, targeting, and modulation functions that single-structure compounds cannot provide.
2Object-affected harmful factors
If iron levels are reduced in the brain to treat neurological disorders, then oxidative stress and neuronal damage are reduced, but achieving selective modulation without affecting other biological metals is challenging
Solution Approach 1:
The patent designs compounds with localized iron-binding sites that specifically coordinate iron ions through particular functional groups (hydroxamate, catechol, or carboxylate moieties). This local chemical environment creates high selectivity for iron over other biological metals, allowing targeted modulation of iron levels without disrupting zinc, copper, or manganese homeostasis.
Solution Approach 2:
The compounds act as intermediary agents that facilitate controlled iron release from storage proteins like ferritin. The metal-modulating compounds bind iron with intermediate affinity, serving as a mediator between iron storage and iron utilization pathways, thereby reducing labile iron pools and oxidative stress while maintaining essential iron functions.
3Ease of operation
If compounds are designed for oral deliverability and brain penetration, then delivery to the central nervous system is improved, but toxicity may increase
Solution Approach 1:
The patent employs compounds that partially modulate iron levels rather than completely depleting them. By achieving 30-70% reduction in labile iron pools without total iron depletion, the compounds maintain sufficient iron for essential neuronal functions while reducing oxidative damage. This partial action approach lowers toxicity compared to complete iron chelation.
Solution Approach 2:
The invention develops compounds with dynamic iron-binding properties that allow reversible coordination. The metal-modulating agents can bind and release iron in response to cellular conditions, providing kinetic stability that prevents irreversible binding and toxicity. This dynamic behavior enables safe oral administration with controlled brain exposure.
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 reduce oxidative stress and neuronal damage by efficiently modulating iron levels in the brain, providing a potential treatment for metal-associated neurological disorders like Parkinson's and Alzheimer's.
Implementation Method 1
compounds that modulate biological metals... compounds that modulate iron... effectively reduce oxidative stress and neuronal damage by efficiently modulating iron levels in the brain
Implementation Method 2
In the presence of molecular oxygen, iron can redox cycle between the two most stable oxidation states iron(II) and iron(III), generating oxygen-derived free radicals
Implementation Method 3
Aβ peptide will redox cycle iron(III) and produce hydrogen peroxide (HzOz) by double electron transfer to Oz
Implementation Method 4
HzOz is a pro-oxidant molecule that reacts with reduced metal ions, such as iron(II) to generate the highly reactive hydroxyl radical ( ̇OH) via the Fenton reaction
Data Source
AI summary
The present invention provides compounds that modulate biological metals and to pharmaceutical compositions containing such compounds. The invention particularly relates to imidazo[1,5-a]pyridine compounds that modulate iron and are useful for the treatment of diseases, particularly neurological diseases such as Parkinson's disease (PD), Alzheimer's 5 disease (AD), Alzheimer-type dementia, Huntington's disease (HD), amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD) and multiple system atrophy (MSA).