FARGE, D.;LE, ROY, P.;MOUTONNIER, C.;PEYRONEL, J. -F.;PLAU, B.
作者:FARGE, D.、LE, ROY, P.、MOUTONNIER, C.、PEYRONEL, J. -F.、PLAU, B.
DOI:——
日期:——
US4526962A
申请人:——
公开号:US4526962A
公开(公告)日:1985-07-02
Cephalosporin derivatives
申请人:Rhone-Poulenc Sante
公开号:US04526962A1
公开(公告)日:1985-07-02
New cephalosporin derivatives of the formula: ##STR1## in which R' represents a protected carboxyl radical, Hal represents a halogen atom, X.sub.1 represents a sulphur or oxygen atom or a sulphinyl radical and R represents an acyl radical or an amine-protecting radical, are useful as intermediates for the preparation of cephalosporins having antibacterial activity.