A novel synthesis of L-pyroglutamic acid derivatives from L-proline: Utility of N-protecting groups for ruthenium tetroxide oxidation of cyclic. ALPHA.-amino acids.
... 3876 Vol. ... H20)' This sample was identical (in terms of IR and NMR spectra) with authentic commercial L- pyroglutamic acid (Sigma Chemical Co.; {ed},5 ... 7) J. Meienhofer, “Chemistry and Biochemistry of the Amino Acids,” ed. by GC Barrett, Chapman and Hall, London, 1985, pp. ...