Constrained glycopeptide ligands for MPRs. Limitations of unprotected phosphorylated building blocks
作者:Henrik Franzyk、Mette K. Christensen、Rikke M. Jørgensen、Morten Meldal、Henriette Cordes、Søren Mouritsen、Klaus Bock
DOI:10.1016/s0968-0896(96)00194-0
日期:1997.1
carboxylate as the allyl ester. Selective allyl ester cleavage and head-to-tail cyclization under pseudodilution conditions gave a high yield of pure cyclic peptide templates. Unprotected phosphate in the building block was evaluated as an alternative to the problematic trichloroethyl group. It was found that one unprotected phosphate is readily incorporated, whereas the second unprotected phosphorylated