title: [Synthesis and properties of the N-ethyl derivatives of carminomycin and rubomycin].
abstract: N-Monoethyl derivatives of carminomycin, rubomycin, 13-dihydrocarminomycin and 13-dihydrorubomycin were synthesized by condensation of their amino groups with acetic aldehyde in the presence of sodium boron hydride. The respective N,N-diethyl derivatives of the antibiotics were formed as by-products of the reaction. New compounds such as N-ethylcarminomycin, N,N-diethylcarminomycin, N-ethyl-13-dihydrocarminomycin, N,N-diethyl-13-dihydrocarminomycin, N-ethylrubomycin and N-ethyl-13-dihydrorubomycin were synthesized. Antibacterial activity of N-ethyl- and N,N-diethyl derivatives of carminomycin and rubomycin determined with the use of Bac. mycoides as the test microbe was 40-50 per cent and that of N-ethyl- and N,N-diethyl-13-dihydro-derivatives was 15-30 per cent of the activity of the respective antibiotics, carminomycin and rubomycin.
mesh_terms: D000478:Alkylation; D001409:Bacillus cereus / Q000187:drug effects; D002360:Carubicin / Q000031:analogs & derivatives / Q000138:chemical synthesis* / Q000494:pharmacology; D003630:Daunorubicin / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology
chemical_list: D002360:Carubicin; D003630:Daunorubicin
vernacular_title: Sintez i svoĭstva N-étilproizvodnykh karminomitsina i rubomitsina.