摘要:
Novel antibiotics of the following structure ##STR1## wherein R represents a moiety selected from the group consisting of hydrogen, --COCH.sub.2 NH.sub.2, --COCH.sub.2 NHCONH.sub.2 and --COCH.sub.2 NHCHO;process for preparation thereof; and biologically pure culture for use therein.
摘要:
Novel fortimicin antibiotics represented by the formula ##STR1## wherein R.sub.1 is loweralkyl, R.sub.2 is hydrogen or loweralkyl and R.sub.3 is selected from the group consisting of hydrogen, acyl, hydroxyacyl, aminoacyl, N-monoloweralkylaminoacyl, N,N-diloweralkylaminoacyl, hydroxy-substituted aminoacyl or an aminoacid residue, loweralkyl, hydroxyloweralkyl, aminoloweralkyl, N-monoloweralkylaminoloweralkyl, N,N-diloweralkylaminoloweralkyl or hydroxy-substituted aminoloweralkyl; and the pharmaceutically acceptable salts thereof, intermediates useful in their preparation, compositions employing the compounds and methods of using the compounds.
摘要:
2-Deoxyfortimicin A, 2-deoxy-4-N-alkyl fortimicins and 2-deoxy-4-N-acyl fortimicins represented by the formula ##STR1## wherein R is selected from the group consisting of acyl, aminoacyl, N-monoloweralkylaminoacyl, N,N-diloweralkylaminoacyl, hydroxy-substituted aminoacyl, an amino acid residue, hydroxyacyl, loweralkyl, aminoloweralkyl, N-monoloweralkylaminoloweralkyl, hydroxyloweralkyl, N-N-diloweralkylaminoloweralkyl or hydroxy-substituted aminoloweralkyl, and the pharmaceutically acceptable salts thereof; intermediates therefor; and pharmaceutical compositions containing the compounds of this invention.
摘要:
This invention provides 4-N-acylfortimicin B derivatives of the structure ##STR1## wherein R is acyl, aminoacyl, N-monoloweralkylaminoacyl, N,N-diloweralkylaminoacyl, hydroxy-substituted aminoacyl, or substituted aminoacyl of the formula ##STR2## where R.sup.1 is an acyl radical derived from an amino acid or a short peptide, and the pharmaceutically acceptable salts thereof.The compounds are useful as intermediates for preparing 4-N-alkyl or substituted alkylfortimicin B derivatives. In addition to their utility as intermediates, some of the compounds of this invention are also useful as antimicrobial agents.
摘要:
2'-N-Acyl and alkyl-6'-epi-fortimicin B and fortimicin B derivatives represented by the formula ##STR1## wherein: R is acyl, hydroxyacyl, aminoacyl, N-monoloweralkylamino, N,N-diloweralkylaminoacyl, hydroxy-substituted aminoacyl, an amino acid residue, loweralkyl, aminoloweralkyl, hydroxyloweralkyl, N-loweralkylaminoloweralkyl, N,N-diloweralkylaminoloweralkyl, aminohydroxyloweralkyl, N-loweralkylaminohydroxyloweralkyl or N,N-diloweralkylaminohydroxyloweralkyl; and R.sub.1 is acyl, aminoacyl, N-monoloweralkylaminoacyl, N,N-diloweralkylaminoacyl, hydroxy-substituted aminoacyl, an amino acid residue, hydroxyacyl loweralkyl, aminoloweralkyl, hydroxyloweralkyl, N-loweralkylaminoloweralkyl, N,N-diloweralkylaminoloweralkyl, aminohydroxyloweralkyl, N-loweralkylaminohydroxyloweralkyl, N,N-diloweralkylaminohydroxyloweralkyl or hydrogen; R.sub.2 is loweralkyl; and R.sub.3 is hydrogen or loweralkyl; and the pharmaceutically acceptable salts thereof; pharmaceutical compositions containing the compounds; and methods of making and using the compounds. The compounds are antibiotics.
摘要:
6'-N-methylfortimicin D and 6'-N-methylfortimicin KE are produced by chemically moidifying fortimicin KE. 6'-N-methylfortimicin D is useful as an antibacterial compound; and 6'-N-methylfortimicin KE is useful as an intermediate in the synthesis of the former compound.
摘要:
A new fortimicin antibiotic, 2-deoxyfortimicin B, intermediates useful in the preparation of the compound, methods of making and using the compound and compositions containing 2-deoxyfortimicin B.
摘要:
A novel series of antibiotics designated the XK-88 series are produced by culturing a microorganism belonging to the genus Streptomyces in a nutrient medium and thereafter recovering the antibiotics from the culture liquor.
摘要:
3-Deoxyglucose and 3,4-dideoxyglucose derivatives are prepared. They are useful for the preparation of aminoglycosides with antibacterial activity.
摘要:
6''-N-alkyl derivatives of kanamycin, 3'',4''-dideoxykanamycin B, 3'',4''-dideoxyneamine and 3'', 4''-dideoxyvistamycin, typically represented by 6''-N-methylkanamycin, 6''-N-methyl-3'',4''dideoxykanamycin B and 6''-N-methyl-3'', 4''-dideoxyvistamycin are synthetized by 6''-N-alkyltalation of the parent substances kanamycin, 3'',4''-dideoxykanamycin B, 3'',4''-dideoxynamine and 3'', 4''-dideoxyvistamycin and are new semi-synthetic antibiotics which are usefully active even against Escherichia and Pseudomonas species resistant to the parent substances.