FOERFARANDE FOER FRAMSTAELLNING AV TERAPEUTISKT ANVAENDBART -(2-(2-AMINO-4-TIAZOLYL)-2-METOXI-IMINOACETAMIDO)-3-(4-METY -5-OXO-6-HYDROXI-4,5-DIHYDRO-1,2,4-TRIAZIN-3-YLTIO)METYL-3- EFEM-4-KARBOXYLSYRADERIVAT

摘要

Cephalosporin compounds of the formula 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.