Ugi and Passerini Reactions of Biocatalytically Derived Chiral Aldehydes: Application to the Synthesis of Bicyclic Pyrrolidines and of Antiviral Agent Telaprevir
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Moni, Lisa
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Univ Genoa, Dept Chem & Ind Chem, I-16146 Genoa, ItalyUniv Genoa, Dept Chem & Ind Chem, I-16146 Genoa, Italy
Moni, Lisa
[1
]
Banfi, Luca
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Univ Genoa, Dept Chem & Ind Chem, I-16146 Genoa, ItalyUniv Genoa, Dept Chem & Ind Chem, I-16146 Genoa, Italy
Banfi, Luca
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]
Basso, Andrea
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Univ Genoa, Dept Chem & Ind Chem, I-16146 Genoa, ItalyUniv Genoa, Dept Chem & Ind Chem, I-16146 Genoa, Italy
Lipase mediated desymmetrization of a meso-diol (1,2-cyclopentanedimethanol) allows the synthesis of both enantiomers of some chiral aldehydes, whose behavior in Passerini and Ugi reactions has been explored. Exploiting these two complementary multicomponent reactions and coupling them with a subsequent cyclization process, we observed that 6 out of all 8 possible stereoisomers of peptidomimetic pyrrolidines can be obtained in good yields. The potential of these protocols has been proved by the development of a new efficient synthesis of antiviral drug telaprevir.