Solid-phase synthesis of N,N′-unsymmetrically substituted ureas: application to the synthesis of carbaza peptides

Autor: Pascal Dalbon, Jean-Paul Briand, David Limal, Michel Jolivet, Vincent Semetey
Přispěvatelé: Institut de Biologie Moléculaire et Cellulaire [Strasbourg] (IBMC)
Rok vydání: 1999
Předmět:
Zdroj: Tetrahedron Letters
Tetrahedron Letters, Elsevier, 1999, 40 (14), pp.2749-2752. ⟨10.1016/S0040-4039(99)00288-9⟩
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(99)00288-9
Popis: The synthesis of Boc- or Fmoc-monoprotected propylenediamine derivatives is reported starting from N-protected α-amino acids. The introduction of these building blocks on solid support via the formation of a urea moiety leads to a new pseudopeptide family (CαCH2CH2Nα(R)CONHCα). Two carbonylating reagents, i.e N,N′-carbonyldiimidazole and triphosgene, as well as different coupling procedures, have been tested to optimize the Boc and Fmoc solid-phase synthesis of a model peptide incorporating this isosteric replacement.
Databáze: OpenAIRE