Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-11-13
1980-07-15
Phillips, Delbert R.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
2601125S, 2601125R, C07C10352
Patent
active
042127955
ABSTRACT:
The synthesis of a disulfide cyclic peptide by preparing an intermediate peptide containing two cysteine moieties, each of which is protected by an n-alkylthio group, or when one of such moieties is in an amino terminal position, this one moiety may be protected by a cysteine group while the other is protected by an n-alkylthio group, and placing such intermediate peptide in a solution substantially free of oxygen and preferably at a pH of from 5 to 10 until rearrangement has taken place, to yield a cyclic disulfide peptide. The disclosure also embraces said intermediate peptides as new compounds and the processes by which they are prepared.
REFERENCES:
patent: 3929758 (1975-12-01), Hughes et al.
patent: 3988309 (1976-10-01), Matsuda et al.
patent: 4033940 (1977-07-01), Hughes et al.
Hughes John L.
Liu Robert C.
Seyler Jay K.
Armour Pharmaceutical Company
Batz Carl C.
Phillips Delbert R.
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