| 摘要 |
<p>New cephem compounds of the formula: …<CHEM>… wherein… R<1> is amino or a protected amino group;… R<2> is hydrogen, lower aliphatic hydrocarbon group which may be substituted with suitable substituent(s), cyclo(lower)alkyl, or cyclo(lower)alkenyl;… R<3> is lower alkyl which mad be substituted with suitable substituents(s);… R<3a> is hydrogen, lower alkyl or amino; and R<3b> is hydrogen or lower alkyl; and… pharmaceutically acceptable salts thereof, and processes for their preparation and a pharmaceutical antibacterial composition comprising them in association with a pharmaceutical antibacterial composition comprising a compound of claim 1 in association with a pharmaceutically acceptable, substantially non-toxic carrier or excipient.</p> |
