The present invention relates to novel cephalosporin derivatives or pharmaceutically acceptable non-toxic salts thereof useful as antibiotics and to processes for the preparation thereof. ##STR1## wherein: R.sup.1 is a hydrogen or an optionally halogen-substituted C.sub.1-3 alkyl group, a propargyl group or --C(R.sup.a)(R.sup.b)COOH, wherein R.sup.1 and R.sup.b are independently a hydrogen or a C.sub.1-3 alkyl group; R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are independently a hydrogen or halogen or a C.sub.1-3 alkyl, amino or hydroxy C.sub.1-3 alkylthio, cyano, carbamoyl, carboxyl, hydroxy C.sub.1-3 alkyl, nitro, acetyl or formyl group; and Q is CH, N or CCl.
本发明涉及新的
头孢菌素衍
生物或其药学上可接受的无毒盐,用作抗生素,并涉及其制备方法。其中:R1是氢或经选项卤素取代的C1-3烷基、
丙炔基或--C(Ra)(Rb)COOH,其中R1和Rb独立地是氢或C1-3烷基;R2、R3、R4、R5、R6和R7独立地是氢或卤素或C1-3烷基、
氨基或羟基C1-3烷基
硫醚、
氰基、
氨基甲酰基、羧基、羟基C1-3烷基、硝基、乙酰基或甲酰基;Q是CH、N或CCl。