Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1987-09-22
1989-03-07
Gray, Bruce D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
562450, 260546, C07C10102
Patent
active
048108162
ABSTRACT:
A process for producing N-formyl-aspartylphenylalanine or its methyl ester, wherein aspartic acid is reacted with formic acid and acetic anhydride in approximately stoichiometric quantities in the presence or absence of a catalyst and phenylalanine or its methyl ester is directly added to the dehydration mixture. This process has a higher yield of the desired N-formyl-dipeptide and minimizes the amount of by-products and unreacted starting materials.
REFERENCES:
patent: 3933781 (1976-01-01), Bachman et al.
McOmie, Protective Groups in Organic Chemistry, Plenum Press, London, pp. 46-49, 82-87(1973).
Kishimoto Shin-ichi
Tsuji Toshiaki
Ajinomoto Co. Inc.
Gray Bruce D.
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