Crystalline Mesembrine Solid Forms for Stable Bioavailability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mesembrine formulations lack stability and consistency, affecting their solubility, dissolution rate, pharmacokinetics, and bioavailability, which are crucial for effective treatment of mental health conditions.
Innovation Solution
Development of crystalline solid forms of mesembrine, including various salts and hydrates, characterized by distinct XRPD peaks, TGA, and DSC profiles, to ensure stability and optimal therapeutic efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If natural extracts of Sceletium tortuosum are used as mesembrine formulations, then the formulations can be obtained from natural sources, but the formulations lack stability and consistency in solubility, dissolution rate, pharmacokinetics, and bioavailability
Solution Approach 1:
The patent applies parameter changes by transforming mesembrine from its natural extract form into specific crystalline solid forms with defined physical and chemical parameters. This includes controlling crystal structure, polymorphic form, and solid state characteristics to achieve consistent solubility, dissolution rate, and bioavailability across different batches while maintaining stability.
Solution Approach 2:
The patent employs composite materials by combining mesembrine with specific excipients and formulation components to create stable solid forms. These composite structures include co-crystals, solvates, and eutectic mixtures that enhance both stability and consistency of the drug product.
2Adaptability or versatility
If different polymorphic forms of mesembrine are used, then novel properties can be achieved, but changes in solubility, dissolution rate, pharmacokinetics, and bioavailability occur
Solution Approach 1:
The patent segments the polymorphic forms of mesembrine into distinct, well-characterized categories with specific XRPD patterns, TGA profiles, and DSC characteristics. This segmentation allows for selective use of particular polymorphic forms based on desired properties while maintaining predictability through rigorous characterization of each form.
Solution Approach 2:
The patent systematically varies physical parameters such as crystal packing, hydrogen bonding networks, and molecular conformation to generate different polymorphic forms with novel properties. Each form is characterized by specific XRPD peaks, TGA weight loss patterns, and DSC thermal transitions, enabling predictable selection based on required solubility or dissolution rate.
3Ease of manufacture
If heat and solvent mediated effects are applied to transform polymorphic forms, then desired solid forms can be obtained, but the manufacturing process becomes complex
Solution Approach 1:
The patent applies preliminary action by pre-characterizing the phase behavior, solubility profiles, and transformation conditions of mesembrine polymorphs. This advance knowledge allows for selection of optimal crystallization conditions and avoidance of complex multi-step processes, simplifying manufacturing while ensuring consistent production of desired solid forms.
Solution Approach 2:
The patent utilizes phase transitions during crystallization and solid-state transformations to obtain desired polymorphic forms. By controlling temperature, solvent composition, and cooling rates, specific polymorphic forms with characteristic XRPD patterns and thermal properties can be reliably produced through straightforward crystallization processes.
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 crystalline solid forms of mesembrine provide enhanced stability and bioavailability, improving the effectiveness of treatments for anxiety, stress, and depression.
Implementation Method 1
Organic small drug molecules have a tendency to self-assemble into various polymorphic forms depending on the environment that drives the self-assembly
Implementation Method 2
Heat and solvent mediated effects can also lead to changes that transform one polymorphic form into another
Implementation Method 3
Heat and solvent mediated effects can also lead to changes that transform one polymorphic form into another
Data Source
AI summary
Solid forms of mesembrine are provided, along with related methods of manufacture. The solid form compositions are useful, for example, in the preparation of pharmaceutical compositions.