N-Carbobenzoxy-alpha-alkoxyglycine esters were synthesized by H2SO4-catalyzed O-alkylation of N-carbobenzoxy-alpha-hydroxyglycine and also by base treatment of N-carbobenzoxy-N-chloroglycine methyl ester in the corresponding alcohol. Saponification of the protected alpha-alkoxyglycines gave free acids which can be used for the synthesis of alpha-alkoxyglycine residue-containing peptides.
N-Carbobenzoxy-alpha-alkoxyglycine esters were synthesized by H2SO4-catalyzed O-alkylation of N-carbobenzoxy-alpha-hydroxyglycine and also by base treatment of N-carbobenzoxy-N-chloroglycine methyl ester in the corresponding alcohol. Saponification of the protected alpha-alkoxyglycines gave free acids which can be used for the synthesis of alpha-alkoxyglycine residue-containing peptides.
A new process is disclosed for the preparation of N-acyl-.alpha.-aromatic and N-acyl-.alpha.-heteroaromatic glycines by reaction of an .alpha.-ester or ether of an N-acylglycine ester or acid with an aromatic or heteroaromatic compound. Also disclosed are new intermediates for preparing N-acyl-.alpha.-aromatic and N-acyl-.alpha.-heteroaromatic glycines.
A new process is disclosed for the preparation of N-acyl-.alpha.-aromatic and N-acyl-.alpha.-heteroaromatic glycines by reaction of an .alpha.-ester or ether of an N-acylglycine ester or acid with an aromatic or heteroaromatic compound. Also disclosed are new intermediates for preparing N-acyl-.alpha.-aromatic and N-acyl-.alpha.-heteroaromatic glycines.