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• W2054366983 abstract "The non-proteinogenic amino acid (2S)-2-amino-3,3-bis(4-fluorophenyl)propanoic acid [(S)-1] is a key intermediate required for the synthesis of Denagliptin (2a). Denagliptin is a dipeptidyl peptidase IV (DPP IV) inhibitor that is being developed for the treatment of type-2 diabetes mellitus. A diastereoselective, cost-efficient synthetic procedure for (S)-1 was developed by alkylating a Ni(II) glycine equivalent derived from (S)-2-[(N-benzylprolyl) amino] benzophenone [(S)-BPB]. The alkylated product was then decomposed to isolate the target amino acid (S)-1 (ee >99%) and ligand (S)-BPB, which can be reused in subsequent reactions. The enantiomer (R)-1 and racemate (rac)-1 were synthesized from their corresponding Ni(II) glycine equivalents. Denagliptin diastereomers (2), derived from the key intermediates (S)-1, (R)-1, and (rac)-1 were synthesized, and their dipeptidyl peptidase IV inhibitory activities were investigated. These findings are important in the design and synthesis of DPP IV inhibitors." @default.
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• W2054366983 date "2008-11-01" @default.
• W2054366983 modified "2023-09-23" @default.
• W2054366983 title "Synthesis of (S)-, (R)-, and (rac)-2-amino-3,3-bis(4-fluorophenyl)propanoic acids and an evaluation of the DPP IV inhibitory activity of Denagliptin diastereomers" @default.
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• W2054366983 doi "https://doi.org/10.1016/j.tet.2008.08.097" @default.
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