1. Total Synthesis of the Biphenomycins; II.1Synthesis of Protected (2S,4R)-4-Hydroxyornithines
2. For recent reviews, see: U.Schmidt, A.Lieberknecht and E.Haslinger, in the The Alkaloids, vol. 26, ed. A. Brossi, Academic Press, New York, 1985, pp. 299–326:
3. M. M. Joullié and R.Nutt, in Alkaloids: Chemical and Biological Perspectives, vol. 3, ed. S. W. Pelletier, Wiley, New York, 1985, pp. 113–168.
4. Studies directed toward the total synthesis of 14-membered cyclopeptide alkaloids: Synthesis of a cyclic precursor to nummularine-F