Preparation of oligopeptide or amino acid alkyl ester.HCl salts

Details Preparation of oligopeptide or amino acid alkyl ester.HCl salts Preparation of oligopeptide or amino acid alkyl ester.HCl salts

1992-12-18

1994-10-18

Cashion, Jr., Merrell C.

Chemistry: natural resins or derivatives; peptides or proteins;

Peptides of 3 to 100 amino acid residues

Synthesis of peptides

530333, 530335, 530345, C07K 304, C07K 308

Patent

active

053570430

ABSTRACT:
The invention relates to a process for the preparation of an oligopeptide or amino acid alkyl ester.HCl salt, the alkyl group being methyl, ethyl, isopropyl or n-propyl, by converting an oligopeptide.HCl salt or amino acid.HCl salt with an alkanol corresponding to the alkyl group under the influence of an acid catalyst, 0.01-0.5 mol HCl relative to the oligopeptide.HCl salt or amino acid.HCl salt in combination with an acid ion exchange resin being used as acid catalyst.

REFERENCES:
patent: 4173562 (1979-11-01), Bachman et al.
patent: 4709013 (1987-11-01), Nagano
patent: 4784685 (1988-11-01), Meister
Chemical Abstracts, vol. 109, No. 19, Nov. 7, 1988, Abstract No. 170936w (JP-A-63 159 363).

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