FOERFARANDE Før FRAMSTAELLNING audio TERAPEUTISKT ANVAENDBART 7-2- (2-AMINO-4-TIAZOLYL) -2-methoxyiminoacetamido / -3- (4-methylene L - OXO-6-hydroxy-4,5-dihydro-1, 2,4-TRIAZIN-3-ylthio) methyl-3-4-CEEM KARBOXYLSYRADERIVAT

摘要

Cephalosporin compounds of the formula IMAGE wherein R and R2 are hydrogen or protecting groups, R1 is hydrogen or methoxy, R3 is hydrogen or C1-C4 alkyl and R4 is C1-C4 alkyl, are broad spectrum antibiotics or intermediates thereto.