Synthesis of Pseudopeptides with Sulfoximines as Chiral Backbone Modifying Elements
摘要:
The synthesis of pseudopeptides with a chiral alpha -sulfonimidoylcarboxy moiety in the backbone is described. Starting from readily available (S-S)-S-methyl S-phenyl sulfoximine and various cyclic and acyclic alpha -amino acids the desired products are obtained in good yields with peptide coupling methodology, Specific secondary structures caused by intramolecular hydrogen bends may be adopted. Results of NMR studies to reveal conformational preferences will be discussed.
Synthesis of Pseudopeptides with Sulfoximines as Chiral Backbone Modifying Elements
摘要:
The synthesis of pseudopeptides with a chiral alpha -sulfonimidoylcarboxy moiety in the backbone is described. Starting from readily available (S-S)-S-methyl S-phenyl sulfoximine and various cyclic and acyclic alpha -amino acids the desired products are obtained in good yields with peptide coupling methodology, Specific secondary structures caused by intramolecular hydrogen bends may be adopted. Results of NMR studies to reveal conformational preferences will be discussed.
Syntheses of sulfoximine-containing pseudopeptides of type 2 are reported. Intramolecular hydrogen bonds have been revealed by NMR spectroscopy. (C) 1997, Elsevier Science Ltd.