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Netilmicin: Netilmicin, 0-3-deoxy-4-C-methyl-3-(methylamino)-/-L-arabinopyranosyl (1^4)-O-[2,6-diamino-2,3,4,6-tetradeoxy-a-D-g/ycero-hex-4-enopyranosyl]-(1^6)-2-deoxy-N3-ethyl-L-streptamine (3.4.10), is also a semisynthetic antibiotic that is synthesized in two stages from another known antibiotic, sisomicin (3.4.11), which is produced by a culture of M. inyoensis. In the first stage of synthesis, reacting sisomicin with acetaldehyde in a specific acidic medium of pH 5 is successful in selectively giving an imine at the 3-amino group of the 2-deoxystreptamine region of the molecule. The resulting imine is then hydrogenated by sodium cyanoborohydride to an ethylamino derivative —netilmicin (32.4.12) [287-291].

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Netilmicin is also highly effective with respect to Gram-negative microorganisms (blue-pus and colon bacilli, rabbit fever, serratia, providencia, enterobacteria, proteus, salmonella, shigella), as well as a few Gram-positive microorganisms (staphylococci and a few strains of streptococci).

It is used for severe bacterial infections that are caused by microorganisms sensitive to the drug. Synonyms of this drug are netillin, zetamycin, and others.

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