Selective hydrogenolysis of the benzyloxycarbonyl protecting group of Nϵ-lysine in cyclopeptides containing a benzylic phenyl ether function. Evidence for Nϵ-methylated lysine side products.
作者:Jean-Paul Mazaleyrat、Juan Xie、Michel Wakselman
DOI:10.1016/s0040-4039(00)74244-4
日期:1992.7
Selective hydrogenolytic cleavage of the N(epsilon)-Z protecting group of lysine in cyclopeptides c[-(Glycyl)n-A-B-N(epsilon)-Z-Lysyl-2-Phenoxymethyl-5-Aminobenzoyl-] (A = B = Glycyl, n = 2 or A = Phenylalanyl, B = Alanyl, n = 2 and 3) occured in both acidic (MeOH/aq.AcOH) and neutral (MeOH/DMF) solvents, with Pd/C catalyst. In the latter case, a N(epsilon)-(bis)-methylated lysine side product was isolated.
Bogetto, Nicole; Vilain, Anne-Cecile; Montagne, Jean-Jacques, Bulletin de la Societe Chimique de France, 1994, vol. 131, p. 152 - 166