Carbapenem antibiotic compounds of the general formula: ##STR1## wherein the moiety ##STR2## is a 4, 5 or 6 membered mono, di- or tri-substituted oxygen or sulfur containing ring; wherein Z is oxygen, sulfur, sulfoxide and sulfone, pharmaceutical compositions thereof useful for the treatment of bacterial infections, processes for preparing the compounds and new intermediates useful in the process.
通式为:##STR1##的碳青霉烯类抗生素化合物,其中基团##STR2##是4、5或6元单、双或三取代的含氧或
硫的环;其中Z是氧、
硫、亚砜和砜,其药物组成物可用于治疗细菌感染,制备该化合物的过程以及在该过程中有用的新中间体。