10.1021/jm00355a004
The research focuses on the development and evaluation of analogues of mitomycin C and porfiromycin with substituted ethylamines at position 7. These analogues were synthesized and tested for their antitumor activities against various mouse tumors, including P-388 leukemia, L-1210 leukemia, and B-16 melanoma. The study aimed to identify compounds that are at least as potent as mitomycin C but with reduced leukopenic effects. Key chemicals involved in the research include mitomycin C, porfiromycin, and a variety of ethylamine derivatives such as 2-phenylethylamine, 2-chloroethylamine, 2-hydroxyethylamine, and others with different functional groups at the 2-position of the ethylamine. The analogues were prepared using mitomycin A or N-methyl-mitomycin A as starting materials and various amines for substitution. The synthesized compounds were then purified, characterized, and tested for their biological activities. The results showed that some analogues exhibited better antitumor activity and reduced leukopenia compared to mitomycin C, with notable examples being the mercaptoethylamine analogue (8) and the fluoroethylamine analogue (4). The study also explored structure-activity relationships, finding a limited correlation between the potency of the analogues and their hydrophilicity.