Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1988-05-26
1989-09-19
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07C20708
Patent
active
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.
Maeda Sadayuki
Nakamura Usao
Sakanaka Makoto
Brust Joseph Paul
Hamari Chemicals Ltd.
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