1958 Volume 45 Issue 10 Pages 779-783
1. Some new tripeptides were synthesized and oxidized by periodic acid in a neutral medium.
2. For the selective oxidation of hydroxyamino acid residue in tripeptide, its amino group must be free.
3. The length of the other residue combined with the amino group of a hydroxyamino acid residue was inverse to the oxidizability of the peptide.
4. Free or not free of its carboxyl group of a hydroxyamino acid residue was independent to the oxidizability of the peptide.
The authors are indepted to Dr. R. Hirohata for his valuable advices and encouragement.