Biphenyl Derivative NMDA Antagonist Stroke Treatment
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Solution Overview
Problem
Current treatments for ischemic stroke are limited by the complexity of the pathophysiological processes involved and the side effects of existing drugs, which often have uncertain clinical therapeutic effects and serious side effects, necessitating the development of more effective and safer therapeutic agents.
Innovation Solution
The use of biphenyl derivatives that antagonize NMDA receptors, regulate calcium channels, and exhibit potent antioxidant and free radical scavenging effects, reducing ischemic stroke injury without causing loss of consciousness, thereby offering a novel approach for treating ischemic stroke symptoms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing drugs are used to treat ischemic stroke, then some therapeutic effect is achieved, but serious side effects occur and clinical therapeutic effects are uncertain
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of biphenyl derivatives through systematic variation of substituents (R1-R6 groups including alkyl, hydroxyl, carboxyl, halogen groups) to optimize the balance between therapeutic efficacy and safety profile. This structural parameter optimization enables the compound to achieve reliable therapeutic effects while minimizing side effects associated with conventional stroke medications.
2Reliability
If NMDA receptor antagonists are used to block excitatory amino acid toxicity, then calcium influx is reduced, but loss of consciousness occurs
Solution Approach 1:
The patent applies local quality by designing a biphenyl derivative with specific functional groups (hydroxyl, carboxyl, halogen substituents at positions R1-R6) that enable selective interaction with NMDA receptors and calcium channels. This localized molecular design allows the compound to exert protective effects in the brain while avoiding the systemic central depressant effects that cause loss of consciousness, achieving site-specific therapeutic action.
Solution Approach 2:
The patent applies partial action by implementing a multi-component molecular structure that performs multiple functions: antagonizing NMDA receptors, regulating calcium channels, and scavenging free radicals. This partial action at multiple targets provides sufficient protection against excitotoxicity without requiring complete NMDA receptor blockade, thereby avoiding the excessive action that leads to consciousness loss.
3Use of energy by moving object
If reperfusion is performed to restore blood supply after cerebral ischemia, then nutrients are restored, but cerebral ischemic reperfusion injury occurs
Solution Approach 1:
The patent applies preliminary anti-action by administering the biphenyl derivative before reperfusion occurs. The compound pre-establishes protective mechanisms by scavenging free radicals, inhibiting lipid peroxidation, and reducing inflammatory responses that would otherwise be triggered by reperfusion. This preemptive treatment allows blood supply restoration while preventing the harmful reperfusion injury from occurring.
Solution Approach 2:
The patent applies blessing in disguise by utilizing the biphenyl derivative's ability to convert the harmful reperfusion process into a beneficial outcome. The compound transforms the potentially damaging reperfusion event into a therapeutic opportunity by enhancing blood flow restoration while simultaneously neutralizing free radicals and reducing inflammation, thereby converting what would be harmful into protective and restorative effects.
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 biphenyl derivatives effectively reduce neurological impairment, cerebral infarction volume, endogenous oxygen free radical scavenger consumption, lipid peroxidation damage, and cellular apoptosis, while down-regulating proinflammatory cytokines, demonstrating a prominent therapeutic effect in both ischemic reperfusion and permanent cerebral ischemia models.
Implementation Method 1
biphenyl derivatives that antagonize NMDA receptors
Implementation Method 2
regulate calcium channels
Implementation Method 3
exhibit potent antioxidant and free radical scavenging effects
Data Source
AI summary
The present invention relates to a biphenyl derivative and use thereof, and the biphenyl derivative has a structure represented by the formula (I) as defined in the specification. The use refers the use of the biphenyl derivative or a pharmaceutically acceptable salt or solvate thereof, or a pharmaceutical composition comprising the biphenyl derivative or a pharmaceutically acceptable salt or solvate thereof in the preparation of a medicament for the treatment and/or prevention of ischemic stroke.