Asymmetric hydrogenation ofN-acetyldehydrodipeptide complexes with Mg(II) and Ca(II) ions
作者:I. N. Lisichkina、A. I. Vinogradova、N. B. Sukhorukova、E. V. Tselyapina、M. B. Saporovskaya、V. M. Belikov
DOI:10.1007/bf00698456
日期:1993.3
N-Ac-DELTA-Phe-AA form labile complexes with Mg(II) ions. Potentiometric titration data show that the carboxyl group of the dehydrodipeptide in them scarcely participates in complexation, unlike the complexes with Ca(II) ions, The hydrogenation of these complexes over Pd/C occurs asymmetrically, the diastereomeric excess being as high as 58%.
Bergmann; Stern; Witte, Justus Liebigs Annalen der Chemie, 1926, vol. 449, p. 292