N.sup..epsilon. -trifluoroacetyl-L-lysyl-L-proline.D-10-camphors

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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C07C20708

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048683124

ABSTRACT:
N.sup..epsilon. -Trifluoroacetyl-L-lysyl-L-proline.D-10-camphorsulfonic acid salt is produced in very high purity by reacting N.sup..epsilon. -trifluoroacetyl-L-lysyl-L-proline with D-10-camphorsulfonic acid in a suitable solvent, followed by crystallization from the reaction mixture.
The salt is extremely stable at a temperature of working ambience as compared with other salts of N.sup..epsilon. -trifluoroacetyl-L-lysyl-L-proline including known dicyclohexylamine salt of the same.

REFERENCES:
patent: 4687840 (1987-08-01), Pang et al.
patent: 4720554 (1988-01-01), Irie et al.

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