| 摘要 |
Reductive alkylation with aldehydes R1-CHO or ketones R2-CO-R3 results in alkylation of the antibiotics BM 123 gamma 1, gamma 2 or mixtures thereof at the terminal primary amino group. With ketones there is single N-alkylation, while with aldehydes the primary amino group is substituted once or twice, depending on the amount of reagents, and the proximal secondary amino group on the side chain can likewise be alkylated. The meanings of R1, R2 and R3 are to be found in Claim 1. The resulting derivatives have a potent antibacterial action; they can be used for the treatment of infectious diseases. |
