Axially-Chiral Cannabinol Analogs for Stable Pain Therapeutics
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Solution Overview
Problem
Current methods for synthesizing cannabinoid analogs, particularly axially-chiral cannabinols (ax-CBN), are limited in diversity and stability, leading to challenges in developing effective non-opioid analgesics due to the instability of tetrahydrocannabinol (THC) oxidation states and the difficulty in creating novel substitution patterns.
Innovation Solution
Development of synthetic routes using (E)-alk-3-enenitriles and (E)-alk-3-eneesters to prepare substituted axially-chiral cannabinols, allowing for diverse and stable ax-CBN compounds with improved drug-like properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional biomimetic route is used to synthesize THC analogs, then benzenoid portion diversification is achieved, but other regions diversification is limited and shelf-life is reduced due to isomerization and oxidation
Solution Approach 1:
The synthesis is divided into separate functional modules: the benzenoid portion is constructed independently with desired substitution patterns, then coupled to the terpene portion. This segmentation allows independent optimization of each region's diversity and stability, avoiding the limitations of the conventional biomimetic route where the entire molecule must be assembled through a single pathway that compromises both diversity and stability.
2Reliability
If THC scaffold is used for analgesic development, then three-dimensional structure and bioactivity are achieved, but instability and easy oxidation to less bioactive CBN occur
Solution Approach 1:
The patent changes the oxidation state parameter of the cannabinoid scaffold from the THC form (prone to oxidation) to the CBN form (oxidation-resistant). While CBN is traditionally less bioactive, the patent combines this stable scaffold with axially-chiral terpenes to restore and enhance bioactivity, thus achieving both stability and reliability simultaneously through parameter modification.
3Stability of the object's composition
If axially-chiral cannabinol compounds are developed for improved stability, then shelf-life and drug-like properties are enhanced, but synthesis methods are currently insufficient
Solution Approach 1:
The patent uses axially-chiral terpenes as intermediary building blocks that facilitate the construction of stable ax-CBN compounds. These chiral terpenes serve as pre-functionalized intermediaries that can be coupled to benzenoid portions through reliable cross-coupling reactions, making the synthesis of axially-chiral cannabinols accessible and efficient while maintaining the desired stability and optical purity.
Data Source
AI summary
In one aspect, the disclosure relates to substituted axially-chiral cannabinol analogs, methods of making same, pharmaceutical compositions comprising same, and methods of treating pain using same. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.