Hidtil ukendte cephalosporin-mellemprodukter og fremgangsmåde til fremstilling af mellemprodukterne og slutprodukter deraf

The present invention provides certain novel cephalosporin derivatives represented by following formula(I), which are especially useful as intermediates for the preparation of cephalosporin compounds possessed with potent and broad antibacterial activities. wherein: R is a C1-4alkyl, C3-4 alkenyl, C...

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Hauptverfasser: KIM, YONG ZU, KIM, WON SUP, BANG, CHAN SIK, YEO, JAE HONG, LIM, JONG CHAN
Format: Patent
Sprache:dan
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Zusammenfassung:The present invention provides certain novel cephalosporin derivatives represented by following formula(I), which are especially useful as intermediates for the preparation of cephalosporin compounds possessed with potent and broad antibacterial activities. wherein: R is a C1-4alkyl, C3-4 alkenyl, C3-4 cycloalkyl, amino optionally substititued with a C1-4 alkyl radical, or phenyl group optionally subsitututed on its 2-, 4-and/or 6-position with a halogen, C1-4 alkyl, C1-3 alkoxy or hydroxy radical; R is hydrogen or a C1-4 alkyl group; and n is either 0 or 1. The invention also relates to processes for preparing these intermediates and their pharmacologically active cephalosporin antibiotics.