摘要:
New A83543 components, including fermentation products A83543K, A83543O, A83543P, A83543U, A83543V, A83543W and A83543Y and N-demethyl derivatives, and salts thereof, are useful for the control of insects and mites. The pseudoaglycones of the new A83543 components are useful for the preparation of A83543 components. Methods are provided for making the new A83543 components by culturing of Saccharopolyspora spinosa NRRL 18395, NRRL 18537, NRRL 18538, or NRRL 18539, or NRRL 18743 or NRRL 18719 or NRRL 18823 in suitable culture medium. Insecticidal and ectoparasiticidal compositions containing new A83543 components are also provided.
摘要:
C-20-Dihydro-deoxy-(cyclic amino)-derivatives of the macrolide antibiotics tylosin, desmycosin, macrocin, lactenocin, 2"'-O-demethylmacrocin and 2"-O-demethyllactenocin, which inhibit pathogenic bacteria, especially gram-positive bacteria, Pasteurella species, and Mycoplasma species, and pharmaceutical compositions thereof, are provided.
摘要:
Apramycin derivatives substituted at the 7'-amino group with a methyl, ethyl, n-propyl or n-butyl substituent are broad spectrum antibiotics. Also claimed are intermediates in the synthesis of these 7'-N-alkylapramycin derivatives.
摘要:
20-Dihydro-20-deoxy-23-demycinosyltylosin (DH-DO-DMT), 20-dihydro-20-deoxy-5-O-mycaminosyltylonolide (DH-DO-OMT), specified acyl ester derivatives, and their acid addition salts are useful intermediates and antibacterial agents. Methods of preparing DH-DO-DMT and DH-DO-OMT by fermentation of Streptomyces fradiae and the microorganism S. fradiae ATCC 31733 are included.
摘要:
Apramycin derivatives substituted at the 6"-position with a variety of substituents are claimed as broad spectrum antibiotics. Also claimed are starting materials and intermediates in the synthesis of the above apramycin derivatives.
摘要:
The compounds of the present invention are prepared directly or indirectly by modifying the compounds that are naturally produced from Saccharopolyspora spinosa. The compounds of the invention have been shown to have activity against insects and mites. The compounds are prepared by modifying the rhamnose sugar, modification of the forosamine sugar, or starting with pseuodoaglycone and then replacement with a nonsugar derivative or different sugar, modification of the 5,6,5-tricyclic and 12-membered macrocyclic lactone part of the compounds naturally produced or of the pseudoaglycone of the natural compounds.
摘要:
This invention relates to derivatives of Wortmannin and particularly to 11,17 substituted derivatives of Wortmannin. The invention also relates to a method of using these compounds as PI-3-kinase inhibitors and as anti-tumor agents.
摘要:
Three new groups of 9-N-substituted derivatives of erythromycylamine with superior oral activity against Gram-positive pathogens, new processes for preparing derivatives of erythromycylamine and aliphatic aldehydes by controlling the pH of the reaction and by catalytic hydrogenation, and pharmaceutical compositions and methods using the new compounds are provided.
摘要:
Zinc salts are used to effect the regio-selective acylation and alkylation of the 1-amino group of 4-O-substituted-2-deoxystreptamine-containing aminoglycosides. The 1-N-substituted derivatives of apramycin, 3'-hydroxyapramycin, certain .alpha. or .beta.-(lower alkyl)aprosaminides and certain .alpha. or .beta.-(substituted lower alkyl)-aprosaminides are new. The 1-N-substituted-4-O-substituted-2-deoxystreptamine aminoglycosides produced by the process of this invention are antibacterial agents.
摘要:
C-20- and C-23-Modified macrolide derivatives of demycinosyltylocin (DMT), 5-O-mycaminosyltylonolide (OMT) 23-de(mycinosyloxy)tylosin, 23-deoxy-OMT, 20-dihydro-20-deoxy-DMT and 20-dihydro-20-deoxy-OMT are useful antibiotics or intermediates to antibiotics.