Telescopic SGLT2 Inhibitor Synthesis Process
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Solution Overview
Problem
Existing processes for preparing SGLT2 inhibitors are inefficient, involving multiple unit operations, high energy consumption, and significant purification steps, leading to low yield and high impurities, making them unsuitable for commercial-scale production.
Innovation Solution
A simplified process involving in-situ condensation, deprotection, and acetylation reactions in telescopic monitoring, using suitable solvents and reagents like organolithium, methanesulphonic acid, and reducing agents to achieve high purity and yield without the need for critical workup procedures or additional purification steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple unit operations and purification steps are used, then high purity and enantiomeric purity are achieved, but yield is reduced and process complexity increases
Solution Approach 1:
The patent combines multiple unit operations (condensation, deprotection, and acetylation reactions) into a telescopic process where reactions are performed sequentially in the same reaction vessel without isolation of intermediates. This merging of operations maintains high purity (>99.5%) through controlled reaction conditions while improving yield (>70%) by eliminating material loss during transfer and purification steps between operations.
Solution Approach 2:
The patent implements continuous useful action by performing reactions in a telescopic sequence where the product of one reaction directly becomes the substrate for the next reaction without interruption or isolation. The deprotection reaction follows immediately after condensation, and acetylation follows immediately after deprotection, maintaining continuous chemical transformation and avoiding yield loss from intermediate handling.
2Manufacturing precision
If multiple unit operations and chromatography purification are used, then high enantiomeric and chemical purity are achieved, but energy consumption increases and process time is extended
Solution Approach 1:
The patent merges multiple reaction steps into a telescopic process that eliminates the need for repeated solvent removal, drying, and purification cycles between steps. By performing condensation, deprotection, and acetylation in sequence without isolating intermediates, the process significantly reduces energy consumption associated with heating, cooling, and evaporation operations while maintaining high purity through controlled reaction conditions.
3Manufacturing precision
If multiple unit operations and critical workup procedures are used, then high purity is achieved, but operational complexity increases
Solution Approach 1:
The patent merges multiple reaction operations into a single telescopic sequence that eliminates the need for multiple workup procedures, filtration steps, and intermediate isolations. The process uses a unified reaction protocol where reagents are added sequentially to the same reaction mixture, reducing operational complexity while maintaining high purity through controlled reaction conditions and selective reagent addition.
4Manufacturing precision
If traditional protection and deprotection steps are used, then selective modification is achieved, but process time and number of steps increase
Solution Approach 1:
The patent applies preliminary action by performing the deprotection reaction immediately after the condensation reaction without isolating the intermediate product. The reaction conditions are pre-optimized so that the deprotection occurs selectively on the newly formed intermediate while leaving other functional groups intact, achieving selective modification without requiring separate protection/deprotection cycles and reducing overall process time.
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 process achieves high purity (>99.5%) and yield (>70%) with reduced impurities and operational complexity, making it commercially scalable and environmentally friendly.
Implementation Method 1
reacting the compound of formula A with the compound of formula B in suitable solvent in the presence of organolithium reagent to provide the compound of formula C
Implementation Method 2
reacting the compound of formula C with methanesulphonic acid in suitable solvent in to provide the compound of formula D
Implementation Method 3
reacting the compound of formula D with reducing agent in suitable solvent to form the compound of formula E
Implementation Method 4
acetylating the compound of formula E in the presence of acetylation agent in suitable solvent to isolate compound of formula F
Implementation Method 5
hydrolyzing compound of formula F in the presence of base in suitable solvent to form SGLT2 inhibitors of formula X
Data Source
AI summary
The present invention relates to an industrially feasible and economically viable process for preparation of SGLT2 inhibitors of formula X in significantly high yield and purity.