反应详情

N-α-CBZ, N- -BOC-L-lysine and ethyl-2-pyrrolidineacetate are condensed by the procedure of Example 1, Step C to give N-α-CBZ, N- -BOC-L-lysyl-(S)-2-pyrrolidine acetic acid ethyl ester. The N-α-CBZ group is removed by hydrogenolysis in ethanol containing one equivalent of acetic acid over 10% palladium on charcoal utilizing the procedure of P. G. Katsoyannis and G. P. Schwartz, Methods in Enzymology, 47, 546 (1974), to give N- -BOC-L-lysyl-(S)-2-pyrrolidineacetic acid ethyl ester.

1. customcondensed by the procedure of Example 1, Step C