TRANSFORMATIONS OF GLYCYRRHIZIC ACID. III.* SYNTHESIS OF NEW GLYCOPEPTIDES CONTAINING METHYL ESTERS OF AMINO ACIDS
A new selective method has been proposed for the preparation of glycopeptides of β-glycyrrhizic acid (I) containing fragments of methyl esters of amino acids by reacting tris-N-hydroxysuccinimidic ester of a glycoside, obtained in situ using N,N'-dicyclohexylcarbodiimide, with hydrochlorides of methyl esters of amino acids or dipeptides in the presence of triethylamine.
Baltina, L. A.,Tolstikov, G. A.
p. 1115 - 1120
(2007/10/02)
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