摘要:
The synthesis of Fmoc/Bu(t) protected amino acid chelators 14, 15, 16 and 24 is described. With respect to their Boc/Bzl derivatives, the title compounds offer synthetic advantage: Peptide Ac-Ada(1)-Ala3-Ada(1)-Ala4-Glu-Lys-NH2 was assembled by Solid PPS in 74.2% yield.