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Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones
Published on: February 7, 2019
Aminoheterocycles as synthons for combinatorial Biginelli reactions
Sergey V Ryabukhin1, Andrey S Plaskon, Sergey Yu Boron
1Enamine Ltd, 23 A. Matrosova St., Kyiv, 01103, Ukraine. Ryabukhin@mail.enamine.net
Chlorotrimethylsilane (TMSCl) efficiently promotes Biginelli reactions for synthesizing dihydropyrimidines. This method allows for the rapid creation of large, diverse chemical libraries with high yields and simple purification.
Area of Science:
- Organic Chemistry
- Medicinal Chemistry
- Heterocyclic Chemistry
Background:
- Biginelli reaction is a multicomponent reaction (MCR) for synthesizing dihydropyrimidines.
- Aminoheterocycles are valuable scaffolds in medicinal chemistry.
- Efficient synthesis of diverse compound libraries is crucial for drug discovery.
Purpose of the Study:
- To develop an efficient method for synthesizing diverse dihydropyrimidines using aminoheterocycles.
- To utilize Chlorotrimethylsilane (TMSCl) as a promoter and water scavenger in Biginelli-type reactions.
- To facilitate the generation of large combinatorial libraries.
Main Methods:
- Biginelli-type multicomponent reaction (MCR) and heterocyclization.
- Employing Chlorotrimethylsilane (TMSCl) as a reaction promoter and water scavenger.
- Synthesis and purification of dihydropyrimidine derivatives.
Main Results:
- Achieved high yields in the synthesis of diverse dihydropyrimidines.
- Demonstrated the efficacy of TMSCl as a promoter and water scavenger.
- Successfully generated a combinatorial library of over 2,000 compounds.
- Described a representative set of 89 synthesized compounds.
Conclusions:
- TMSCl is an effective reagent for Biginelli-type MCRs.
- The developed method enables facile and efficient synthesis of diverse dihydropyrimidine libraries.
- This approach is suitable for generating structurally and functionally diverse compound collections for screening.
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