(1R,2R)-3-(3-Dimethylamino-1-ethyl-2-methylpropyl)phenol for Neuropathic Pain

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Solution Overview

Problem

Current treatments for diabetic neuropathic pain, particularly diabetic peripheral neuropathy, are inadequate due to the limited effectiveness of existing medications, which often come with significant side effects or are ineffective in neuropathic pain models.

Innovation Solution

The use of (1R,2R)-3-(3-dimethylamino-1-ethyl-2-methylpropyl)phenol, which acts as a centrally active analgesic with a dual mode of action as a µ-opioid receptor agonist and noradrenaline uptake inhibitor, providing effective pain relief with reduced opioid-like side effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If gabapentin is used for treatment, then neuropathic pain is treated, but effectiveness is relatively low and significant doses are required

Engineering Contradiction:
ImproveeffectivenessVSAvoiddose
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent applies parameter changes by modifying the chemical structure of gabapentin to create (1R,2R)-3-(3-dimethylamino-1-ethyl-2-methylpropyl)phenol, which has improved analgesic potency. The structural modification changes the molecular parameters to achieve better binding affinity at lower concentrations, resolving the contradiction between effectiveness and required dose.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention applies local quality by introducing specific stereochemical configuration (1R,2R) and functional groups (dimethylamino, phenol) at particular positions in the molecule. This localized structural optimization enhances the drug's interaction with neural targets, improving effectiveness without requiring proportionally higher doses.

Inventive Principle:
Principle #3Local quality

2Reliability

If morphine is used for treatment, then neuropathic pain is treated, but side effect profile is problematic

Engineering Contradiction:
ImproveeffectivenessVSAvoidside effects
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts the essential analgesic property from morphine while removing its harmful side effects. By designing a completely different molecular structure ((1R,2R)-3-(3-dimethylamino-1-ethyl-2-methylpropyl)phenol) that achieves pain relief through alternative mechanisms, the invention separates the beneficial effect from the harmful side effects associated with traditional opioids.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention creates a composite molecular structure combining features of different chemical classes (amine, phenol, terpene-like scaffold) to achieve multifunctional activity. This composite structure provides analgesic effectiveness through multiple mechanisms while avoiding the specific side effect profile of pure opioid compounds.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If conventional pain treatments are used, then nociceptive pain is treated, but neuropathic pain is not effectively treated

Engineering Contradiction:
Improvebroad applicabilityVSAvoideffectiveness in neuropathic pain
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent creates a compound with universal analgesic activity that works across different pain types. The (1R,2R)-3-(3-dimethylamino-1-ethyl-2-methylpropyl)phenol molecule is designed to interact with multiple neural targets and pathways, providing effectiveness in both nociceptive and neuropathic pain models, thus resolving the limitation of conventional treatments.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention uses parameter changes in molecular structure to enhance adaptability to different pain mechanisms. By optimizing lipophilicity, molecular size, and functional group arrangement, the compound achieves broad spectrum analgesic activity while maintaining high effectiveness specifically in neuropathic pain conditions.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP2117525B1Use of 1-phenyl-3-dimethylamino-propane compounds for the therapy of neuropathy pain
Publication Date: 2013.12.25 GRUNENTHAL GMBH

AI summary

The invention relates to the use of 1-phenyl-3-dimethylamino-propane compounds for the production of pharmaceuticals for the treatment of neuropathic, preferably of polyneuropathic pain, further preferably of diabetic neuropathic pain, preferably diabetic peripheral neuropathic pain, further preferably for the treatment of diabetic peripheral neuropathy.