Process for recovering a dipeptide derivative

Details Process for recovering a dipeptide derivative Process for recovering a dipeptide derivative

1982-09-08

1984-12-11

Phillips, Delbert R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C10352

Patent

active

044877170

ABSTRACT:
A process for recovering a dipeptide derivative comprises admixing an aqueous mixture of a solid dipeptide ester derivative of the formula ##STR1## wherein R.sub.1 is a lower alkyl group, R.sub.2 is a side chain group of an amino acid, n is 1 or 2, X is a benzyloxycarbonyl group which can have a nuclear substituent and Y is a hydrogen ion or an ammonium derivative ion of the formula ##STR2## wherein R.sub.3 is a side chain group of an amino acid and R.sub.4 is a lower alkyl group with an organic solvent capable of forming a binary phase system with water; said solvent being present in an amount effective to obtain the transfer of said peptide in the form of a solid from the aqueous phase to the organic solvent phase, settling the resulting admixture to form

REFERENCES:
patent: 3678026 (1972-07-01), Ariyoshi et al.
patent: 3808190 (1974-04-01), Dahlmans et al.
patent: 3833553 (1974-09-01), Ariyoshi et al.
patent: 4119493 (1978-10-01), Isowa et al.
patent: 4165311 (1979-08-01), Isowa et al.

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