Synthetic Process for Pharmaceutical Agents
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Solution Overview
Problem
Current methods for preparing compounds of formula I and its salts are inefficient, leading to high costs, prolonged times, and significant waste, with a need for improved synthetic processes and intermediates for compounds of formula II and III to enhance yield and reduce waste.
Innovation Solution
Development of new synthetic processes and intermediates for preparing compounds of formula I, including methods for protecting, activating, deoxygenating, and deprotecting intermediates such as compounds of formula II and III, to optimize the preparation of formula I and its salts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing methods are used to prepare compounds of formula I and intermediates, then the synthesis can be completed, but the process is inefficient, costly, time-consuming, and generates significant waste
Solution Approach 1:
The patent divides the synthesis into distinct modular stages (protection, activation, deoxygenation, deprotection) that can be independently optimized and performed in sequence, improving overall process efficiency and reducing time loss between operations
Solution Approach 2:
The patent applies protection groups to intermediates before subsequent reactions, and performs activation steps in advance, allowing the main transformation to proceed more efficiently without time loss from sequential preparation
2Productivity
If existing methods are used to prepare compounds of formula I and intermediates, then the synthesis can be completed, but the cost is high
Solution Approach 1:
The patent changes reaction parameters including solvent selection, temperature profiles, and reagent equivalents to optimize yield and reduce waste, thereby lowering manufacturing costs while maintaining high productivity
3Productivity
If existing methods are used to prepare compounds of formula I and intermediates, then the synthesis can be completed, but significant waste is generated
Solution Approach 1:
The patent employs deprotection steps that recover and recycle protecting group fragments, and optimizes reaction conditions to minimize byproduct formation, thereby reducing waste while maintaining efficient synthesis
Solution Approach 2:
The patent converts potentially harmful or wasteful reaction byproducts into useful intermediates or recyclable materials through careful selection of reaction conditions and workup procedures
4Reliability
If existing methods are used to prepare compounds of formula I and intermediates, then the synthesis can be completed, but the yield is reduced
Solution Approach 1:
The patent uses carefully selected protecting groups and activation intermediates that facilitate high-yield transformations by preventing side reactions and ensuring clean reaction pathways
Data Source
AI summary
Methods and intermediates useful for preparing a compound of formula I:and salts thereof.