Synthesis of enantiopure α-Tfm-proline and α-Tfm-pipecolic acid from oxazolo-pyrrolidines and -piperidines
Author(s) -
Clément A. Sanchez,
Charlène Gadais,
Sitan Diarra,
Andrea Bordessa,
Nathalie Lensen,
Evelyne Chelain,
Thierry Brigaud
Publication year - 2021
Publication title -
organic and biomolecular chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.923
H-Index - 146
eISSN - 1477-0539
pISSN - 1477-0520
DOI - 10.1039/d1ob01173a
Subject(s) - enantiopure drug , pipecolic acid , chemistry , pyrrolidine , piperidine , imino acid , proline , stereochemistry , combinatorial chemistry , organic chemistry , amino acid , enantioselective synthesis , biochemistry , catalysis
Enantiopure α-Tfm-proline and α-Tfm-pipecolic acid were synthesized starting from commercially available diesters and ethyl trifluoroacetate. A Strecker type reaction on intermediate chiral Tfm-oxazolo-pyrrolidine and -piperidine provided the corresponding nitrile precursor of enantiopure (R) and (S) α-Tfm-proline and α-Tfm-pipecolic acid. The C-terminal peptide coupling reaction of α-Tfm-pipecolic acid has been successfully achieved.
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