The invention relates to novel intermediates for the preparation of peptides of pharmacological activity, said intermediates being of the formulas: ##STR1## wherein R.sub.2.sup.r is amino protective group and Y is hydrogen or amino protective group; and : ##STR2##
New peptide, process for preparation thereof and use thereof
申请人:Fuisawa Pharmaceutical Company, Ltd.
公开号:US04539155A1
公开(公告)日:1985-09-03
The invention relates to compounds and salts of compounds which are diaminopimelyl peptides, N-acetoxypropionyl or N-t-butoxycarbonyl-amino-acid - (.alpha.-OBzl) glutamic acid peptides or N-acylated derivatives of (.alpha.-OBzl) glytamic acid or of (.alpha.-OBzl) aminoadipic acid. The compounds and their salts are starting materials for the preparation of pharmacologically active peptides.
Sustainable and efficient manufacturing methods for N-methylated peptides remain underexplored despite growing interest in therapeutic N-methylated peptides within the pharmaceutical industry. A methodology for the coupling of C-terminally unprotected N-methylamino acids mediated by an isostearic acid halide (ISTAX) and silylating reagent has been developed. This approach allows for the coupling of