An Efficient Preparation of Cyclo(Leu-Enkephalin) via the 4-(Methylthio)phenyl Ester Method$^1$

References

1. Bull. Korean Chem. Soc. v.9 D. H. Park;J. K. Jung;Y. S. Lee
2. Proc. 5th Korea-Japan Seminar and 9th Symp. on Org. Chem. Y. S. Lee;D. H. Park;K. W. Roh
3. Proc. 1st Symp. on Biomolecules D. H. Park;J. M. Kim;S. J. Ryoo;Y. S. Lee
4. J. Pharm. Sci. v.61 K. D. Kopple
5. Bull. Chem. Soc. Japan v.62 M. Tanaki;M. Takimoto;M. Hayashi;I. Muramatsu
6. Peptide Chemistry M. Bodanszky
7. Tetrahedron Lett. H. Faulstich;H. Trischmann;T. Wieland
8. Bull. Korean Chem. Soc. v.6 no.6 Y. S. Lee;W. S. You
9. J. Org. Chem. v.33 B. J. Johnson;P. M. Jacobs
10. J. Org. Chem. v.35 B. J. Johnson;T. A. Ruettinger
11. Helv. Chim. Acta v.41 R. Schwyzer;P. Sieber
12. Rec. Chem. Prog. v.20 R. Schwyzer
13. Molecular Association R. Foster
14. Angew. Chem. Int. Ed. Engl. v.20 H. Kessler;G. Holzemann
15. J. Am. Chem. Soc. v.89 M. Waki;N. Izumiya
16. J. Org. Chem. v.45 W. F. DeGrado;E. T. Kaiser
17. J. Org. Chem. v.47 W. F. Degrado;E. T. Kaiser
18. Synthesis M. K. Anwer;A. F. Spatola