Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1991-03-22
1992-08-25
Rizzo, Nicholas S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
540227, C07D50118
Patent
active
051420414
ABSTRACT:
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. ##STR1## wherein: R.sup.1 is a C.sub.1-4 alkyl, C.sub.3-4 alkenyl, C.sub.3-4 cycloalkyl, amino optionally substituted with a C.sub.1-4 alkyl radical, or phenyl group optionally substituted on its 2-, 4-and/or 6-position with a halogen, C.sub.1-4 alkyl, C.sub.1-3 alkoxy or hydroxy radical;
Bang Chan S.
Kim Won S.
Kim Yong Z.
Lim Jong C.
Yeo Jae H.
Lucky Ltd.
Rizzo Nicholas S.
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