Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Addition compounds have the formula ##STR1## wherein R.sub.1 represents an aliphatic oxycarbonyl group, benzyloxycarbonyl group which can have nuclear substituents or benzoyl, aromatic sulfonyl or aromatic sulfinyl group; R.sub.2 represents methyl, isopropyl, isobutyl, isoamyl or benzyl group; R.sub.3 represents a lower alkoxyl, benzyloxy or benzhydryloxy group and n represents 1 or 2.
The addition compounds are produced by reacting an N-substituted monoaminodicarboxylic acid having the formula ##STR2## with an amino carboxlic acid ester having the formula in an aqueous medium in the presence of a protease and reacting the resulting dipeptide ester with the amino carboxylic acid ester and separating the addition compound.
The addition compounds can be decomposed into the constituent dipeptide esters and amino acid esters by the action of an acid.
patent: 4165311 (1979-08-01), Isowa et al.
patent: 4256836 (1981-03-01), Isowa et al.
Eliel, "Stereochemistry of Carbon Compounds" 1962, p. 49.
Phillips Delbert R.
Sajami Chemical Research Center
Toyo Soda Manufacturing Co. Ltd.
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