title: Synthesis and antibacterial activity of novel 4-pyrrolidinylthio carbapenems Part IV. 2-Alkyl substituents containing cationic heteroaromatics linked via a C-C bond.
abstract: The synthesis and biological activity of a novel series of 2-alkyl-4-pyrrolidinylthio-beta-methylcarbapenems containing a variety of cationic heteroaromatic substituents linked via a C-C bond is described. As a result of these studies, we selected FR21818 (In) as a candidate compound for development. FR21818 exhibited a well balanced spectrum of antibacterial activity, including Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA), excellent urinary recovery, good stability against renal dehydropeptidase-I (DHP-I). no antigenicity and mutagenicity, weak toxicities, and good efficacy and therapeutic effect on mice systemic infections. Affinities to PBP's, permeability of outer membrane, and plasma levels in mice, dog, and cynomolgous monkey of FR21818 are also reported.
authors.affiliation: Medicinal Chemistry Research Laboratories, Fujisawa Pharmaceutical Co. Ltd, Osaka, Japan. hidenori_azami@po.fujisawa.co.jp
authors.forename: H A
authors.initials: HA
authors.lastname: Zam
authors.forename: D
authors.initials: D
authors.lastname: Barrett
authors.forename: A
authors.initials: A
authors.lastname: Tanaka
authors.forename: H
authors.initials: H
authors.lastname: Sasaki
authors.forename: K
authors.initials: K
authors.lastname: Matsuda
authors.forename: M
authors.initials: M
authors.lastname: Sakurai
authors.forename: T
authors.initials: T
authors.lastname: Terasawa
authors.forename: F
authors.initials: F
authors.lastname: Shirai
authors.forename: T
authors.initials: T
authors.lastname: Chiba
authors.forename: Y
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: S
authors.initials: S
authors.lastname: Tawara
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D019540:Area Under Curve; D001419:Bacteria / Q000187:drug effects*; D001425:Bacterial Outer Membrane Proteins / Q000187:drug effects / Q000378:metabolism; D015780:Carbapenems / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D004285:Dogs; D000882:Haplorhini; D006801:Humans; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D008813:Mice, Inbred ICR; D008826:Microbial Sensitivity Tests; D011552:Pseudomonas Infections / Q000188:drug therapy / Q000382:microbiology; D011550:Pseudomonas aeruginosa / Q000187:drug effects; D011759:Pyrrolidines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D051381:Rats; D013055:Spectrophotometry, Infrared; D013203:Staphylococcal Infections / Q000188:drug therapy / Q000382:microbiology; D013211:Staphylococcus aureus / Q000187:drug effects; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D001425:Bacterial Outer Membrane Proteins; D015780:Carbapenems; D007202:Indicators and Reagents; D011759:Pyrrolidines