Diazomethyl ketone and chloromethyl ketone analogues prepared from N-tosyl amino acids have been synthesized and tested for antitumor activity in Ehrlich ascites carcinoma and P- 388 lymphocytic leukemia screens in mice. The N-tosyl chloromethyl ketone analogues prepared from glycine, L-alanine,@-alanine, L-valine, and 6-(N-tosylamino) caproic acid were the most potent antineoplastic agents in the Ehrlich ascites carcinoma screen. The N ...