Cationic Aromatic Compounds for Long-Acting Local Nerve Block
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Solution Overview
Problem
Current local anesthetic drugs provide insufficient duration and safety for postoperative analgesia, leading to prolonged use of systemic opioid analgesics with associated side effects, and existing long-acting alternatives suffer from delayed onset, toxicity, and nerve damage.
Innovation Solution
Development of a new class of cationic aromatic compounds with specific structural features, allowing for rapid onset and long-lasting local anesthesia with minimal tissue and systemic toxicity, achieved through synthesis methods that ensure safety and efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing aromatic compounds are used as kinase inhibitors, then kinase activity can be inhibited, but they exhibit poor solubility in aqueous solvents and poor blood-brain barrier penetration
Solution Approach 1:
The patent modifies the chemical structure of aromatic compounds by changing physical and chemical parameters - specifically introducing polar groups (carboxyl, hydroxyl, amino, or carbonyl groups) at specific positions (positions 2, 3, or 4) relative to the chloro substituent. This structural parameter change enhances aqueous solubility and blood-brain barrier penetration while maintaining kinase inhibition activity.
Solution Approach 2:
The patent creates composite molecular structures by combining the chloro-substituted aromatic core with multiple polar functional groups. This composite approach integrates the kinase-inhibiting properties of the aromatic system with the solubility and penetration properties of polar groups, achieving multi-functional performance.
2Reliability
If aromatic compounds with chloro substituents are used, then kinase inhibition activity is achieved, but aqueous solubility is poor
Solution Approach 1:
The patent changes the chemical parameters of the aromatic compound by introducing polar functional groups (carboxyl, hydroxyl, amino, or carbonyl groups) at specific positions relative to the chloro substituent. This parameter modification enhances interactions with aqueous solvents, thereby improving aqueous solubility while preserving kinase inhibition activity.
3Reliability
If aromatic compounds with chloro substituents are used, then kinase inhibition activity is achieved, but blood-brain barrier penetration is poor
Solution Approach 1:
The patent modifies structural parameters by introducing polar groups (carboxyl, hydroxyl, amino, or carbonyl groups) at specific positions (2, 3, or 4) relative to the chloro substituent on the aromatic ring. This parameter change enhances the compound's ability to penetrate the blood-brain barrier while maintaining kinase inhibition activity.
Data Source
AI summary
Disclosed is an aromatic compound. Such compounds can locally produce a long-lasting nerve blocking effect, have an analgesic effect, an anti-pruritic effect, etc., and can be used in the preparation of a long-acting local anaesthetic drug, a local analgesic drug and an anti-pruritic drug.