Synthesis of mono Nα-trifluoroethylated cyclic dipeptides
摘要:
Trifluoroethylated N-termini in linear dipeptideS L-TyrXOR [X = Gly, D-Ala, L-Leu, L-Phe, and L-Glu; R = H, Me, Et] exhibit sufficient nucleophilicity to give piperazine-2,5-dione ring formation through intramolecular cyclization reaction in acidic aqueous solutions. The reactions occur in high yield and with absolute configuration retention. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis of mono Nα-trifluoroethylated cyclic dipeptides
摘要:
Trifluoroethylated N-termini in linear dipeptideS L-TyrXOR [X = Gly, D-Ala, L-Leu, L-Phe, and L-Glu; R = H, Me, Et] exhibit sufficient nucleophilicity to give piperazine-2,5-dione ring formation through intramolecular cyclization reaction in acidic aqueous solutions. The reactions occur in high yield and with absolute configuration retention. (c) 2005 Elsevier Ltd. All rights reserved.