Glutathione-Modified Rapamycin Derivatives for Enhanced Solubility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rapamycin compounds have poor water solubility and stability in vivo, leading to low bioavailability and increased side effects due to their poor absorption and rapid degradation, which limits their therapeutic effectiveness in treating conditions such as transplant rejection, tumors, and vascular diseases.
Innovation Solution
Modification of rapamycin compounds with glutathione to enhance their water solubility, allowing for improved bioavailability and stability, and the development of a pharmaceutical composition that can be administered via injection, providing a sustained release of the active drug.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rapamycin compounds are used in relatively large dosages to improve therapeutic effect, then therapeutic efficacy is enhanced, but side effects increase
Solution Approach 1:
The patent changes the chemical structure parameters of rapamycin by introducing water-soluble side chains at specific positions (C-42, C-31, or both) of the macrocyclic ring. This structural modification transforms the original lipophilic rapamycin into water-soluble derivatives, enabling effective delivery at lower dosages while maintaining therapeutic efficacy and reducing side effects through improved pharmacokinetic properties
Solution Approach 2:
The patent creates composite molecular structures by combining the rapamycin core with water-soluble side chain moieties. These composite molecules integrate the immunosuppressive activity of rapamycin with the hydrophilic properties of the side chains, achieving both effective drug delivery and reduced toxicity through optimized solubility and stability characteristics
2Reliability
If rapamycin compounds are administered to achieve therapeutic levels, then immunosuppressive effect is obtained, but bioavailability is limited due to poor water solubility
Solution Approach 1:
The patent modifies the solubility parameter of rapamycin by attaching water-soluble side chains containing hydrophilic groups. This parameter change enables the drug to dissolve in aqueous biological fluids, dramatically improving absorption and bioavailability while maintaining the immunosuppressive pharmacological activity of the parent compound
3Reliability
If rapamycin compounds are used to treat diseases, then therapeutic effect is achieved, but stability in vivo is poor leading to rapid degradation
Solution Approach 1:
The patent changes the chemical stability parameters of rapamycin through structural modification with stable side chain attachments. The modified derivatives exhibit enhanced metabolic stability and resistance to degradation in vivo, allowing the drug to maintain its therapeutic activity for longer periods and achieve sustained immunosuppressive 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 glutathione-modified rapamycin derivatives exhibit significantly improved water solubility and stability, leading to enhanced bioavailability and therapeutic efficacy with reduced toxicity, effectively inhibiting tumor growth and improving treatment outcomes for various diseases.
Implementation Method 1
Modification of rapamycin compounds with glutathione to enhance their water solubility
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Water-soluble glutathione modified rapamycin derivatives of formula I and the preparation method thereof, wherein R1 and R2 are as defined in the description. The compound of formula I can be used in inducing immunosuppression and in the treatment of diseases such as transplant rejection and solid tumor, etc.