摘要:
There are disclosed novel 23-demycinosyltylosin and derivatives thereof which have improved activity as antibiotics. Methods of preparation of the compounds are also disclosed.
摘要:
There are disclosed 20-imino-20-deoxo-4"-acyl derivatives of the antibiotic tylosin which have higher serum levels and better absorption than the parent tylosins. Methods of preparation of the compounds are also disclosed.
摘要:
Disclosed herein are (5R,6S,8R)-6-(1-hydroxyethyl)-2-(2-fluoroethylthio)-penem-3-carboxylic acid and the metabolisable esters thereof and alkali metal salts thereof, which are potent antibacterial agents.
摘要:
Everninomicin B, C or D may be converted to amino derivatives by reductive means. The amino derivatives may, subsequently, be converted to novel N-acyl, N-alkyl or N,N-dialkyl derivatives. Alternatively, everninomicins B, C or D may be converted to N-acyl-N-hydroxylamino derivatives also by reductive means. The derivatives so-produced and the non-toxic pharmaceutically acceptable cationic salts thereof are novel and are antibacterial agents.