Heterocyclic Compound RBP4-Lowering for Ophthalmic Disease
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Solution Overview
Problem
Current treatments for age-related macular degeneration and Stargardt's disease related to increased RBP4 or retinol levels lack effective RBP4-lowering agents.
Innovation Solution
A heterocyclic compound, specifically represented by formula (I), with various substitutions, is developed to lower RBP4 levels, providing a medicament for prophylaxis or treatment of these diseases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If fenretinide is used to lower blood RBP4 levels, then RBP4 concentration decreases, but the compound has limited efficacy for ophthalmic diseases and causes side effects
Solution Approach 1:
The patent modifies the chemical structure of fenretinide by replacing the terminal carboxylic acid group with various heterocyclic groups (Formula I compounds), creating analogs with different physicochemical properties. This structural parameter change aims to optimize both RBP4-lowering activity and therapeutic profile for ophthalmic diseases while reducing side effects.
2Quantity of substance
If existing RBP4-lowering compounds are administered, then blood RBP4 levels are reduced, but effective compounds for ophthalmic diseases have not been established
Solution Approach 1:
The patent introduces specific substituent patterns at defined positions of the core molecular structure (Formula I), creating compounds with optimized local chemical properties. This allows tailoring of the compound's interaction with RBP4 and retinol while improving efficacy specifically for ophthalmic applications.
Solution Approach 2:
Systematic variation of heterocyclic groups and substituents in Formula I compounds modifies molecular parameters such as lipophilicity, steric bulk, and electronic properties, thereby optimizing both RBP4-lowering potency and disease-specific therapeutic efficacy.
Data Source
AI summary
Provided is a heterocyclic compound having a superior RBP4-lowering action and useful as a medicament for the prophylaxis or treatment of a disease or symptom mediated by an increase in RBP4 or retinol supplied by RBP4. A compound represented by the formula (I): wherein each symbol is as defined in the Description, or a salt thereof has a superior RBP4-lowering action, and is useful as a medicament for the prophylaxis or treatment of a disease or symptom mediated by an increase in RBP4 or retinol supplied by RBP4.