41401-76-7Relevant articles and documents
Cephalosporins
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, (2008/06/13)
Novel cephalosporin derivatives are described which have excellent antibiotic activity against pathogenic bacteria belonging to the Pseudomonas, Serratia and Enterobacter. The compounds have general formula STR1 in which R is hydrogen, acyloxy, carbamoyloxy, a substituted or unsubstituted pyridinium group or a group -S-Het in which Het represents a substituted or unsubstituted, hetero atom-containing, 5- or 6-membered heterocyclic ring, R' is hydrogen, alkali metal, an organic amine or an ester moiety, R1 and R2 are the same or different and are hydrogen or a lower alkyl and B stands for a 1,4-cyclohexadienyl group, a group STR2 in which Y is hydrogen, --OH or STR3 in which R5 is an alkyl of 1 to 5 carbon atoms, aryl or alkoxy having 1 to 4 carbon atoms, Z stands for hydrogen or halogen and p is an integer of 1 or 2, a furan group or a thiophene group. Methods of preparation are described.
Heterocyclic ureas
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, (2008/06/13)
Ureas of the structure: STR1 WHEREIN X is F or Cl or OCH3 ; Y is O or NH; m is 0, 1 or 2 and N and n' each are 0 or 1 with the proviso that if n' is 1, X is not Cl and if Y is O, X is not Cl are useful in prevention of ozone damage to plants.