Process for producing threo-3-amino-2-hydroxybutanoyl-aminoaceti

Details Process for producing threo-3-amino-2-hydroxybutanoyl-aminoaceti Process for producing threo-3-amino-2-hydroxybutanoyl-aminoaceti

1980-11-28

1983-07-05

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

560 39, 560 24, 560250, 560 29, 562448, C07C10134

Patent

active

043919863

ABSTRACT:
Threo-3-protected amino-2-hydroxy-4-oxobutanoic acid or its esters represented by the formula: ##STR1## wherein R.sub.1 represents naphthyl or a group of the formula ##STR2## in which R.sub.6 and R.sub.7 represent individually hydrogen, halogen, amino, an amino protected with acyl, lower alkyloxycarbonyl or carbamoyl, hydroxy or protected with acyl, lower alkyloxycarbonyl or carbamoyl, lower alkoxy, lower alkyl or phenyl group; R.sub.2 represents an amine protected with acyl, lower alkyloxycarbonyl or carbamoyl; and R.sub.3 represents hydrogen, lower alkyl having 1 to 6 carbon atoms or benzyl.

REFERENCES:
patent: 4029547 (1977-06-01), Ameyawa et al.
patent: 4179573 (1979-12-01), Ameyawa et al.
patent: 4189604 (1980-02-01), Ameyawa et al.

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