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A concise enantioselective synthesis of (-)-ranirestat
Barry M Trost1, Maksim Osipov, Guangbin Dong
1Department of Chemistry, Stanford University, Stanford, California 94305, USA. bmtrost@stanford.edu
Researchers developed an efficient, enantioselective synthesis for ranirestat, a potent aldose reductase inhibitor. This method uses affordable starting materials and a key palladium-catalyzed asymmetric allylic alkylation to create the drug
Area of Science:
- Organic Chemistry
- Medicinal Chemistry
Background:
- Aldose reductase inhibitors are crucial for managing diabetic complications.
- Ranirestat is a potent inhibitor with therapeutic potential.
Purpose of the Study:
- To develop a concise and enantioselective synthesis of ranirestat.
- To utilize cost-effective starting materials and efficient catalytic methods.
Main Methods:
- Palladium-catalyzed asymmetric allylic alkylation (Pd-AAA) of malonate.
- Construction of a tetrasubstituted chiral center.
Main Results:
- Achieved a concise and enantioselective synthesis of ranirestat.
- Employed inexpensive, commercially available starting materials.
- Successfully constructed the key tetrasubstituted chiral center.
Conclusions:
- The reported synthesis provides an efficient route to ranirestat.
- This method is suitable for large-scale production due to its cost-effectiveness.
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