This invention relates to novel cephem compounds of high antimicrobial activity of the formula ##STR1## wherein R.sup.1 is amino or a protected amino, R.sup.2 is lower alkyl, R.sup.3 is hydrogen or lower alkyl, R.sup.4 is hydrogen, acyloxy(lower)alkyl or acylthio(lower)alkyl and R.sup.5 is carboxy or a protected carboxy.
New cephem compounds and processes for preparation thereof
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04268509A1
公开(公告)日:1981-05-19
This invention relates to new 7-substituted-3-cephem-4-carboxylic acids and pharmaceutically acceptable salts thereof, which have antimicrobial activities, and processes for preparation thereof, to intermediates for preparing the same and processes for preparation thereof, and to pharmeceutical compositions comprising the same and methods of using the same prophylactically and therapeutically for treatment of infectious diseases in human beings and animals.
Synthesis and SAR of novel conformationally restricted oxazolidinones possessing Gram-positive and fastidious Gram-negative antibacterial activity. Part 2: Amino substitutions on heterocyclic D-ring system
作者:Allison L. Choy、J.V.N. Vara Prasad、Frederick E. Boyer、Michael D. Huband、Michael R. Dermyer
DOI:10.1016/j.bmcl.2007.05.085
日期:2007.8
A novel series of conformationally restricted oxazolidinones was synthesized, in which the heterocyclic D ring was substituted with various amino groups. Several analogs exhibited potent activity against both Gram-positive and fastidious Gram-negative organisms. Certain aniino-substituted analogs also exhibited improved aqueous solubility compared to the corresponding un-substituted heterocyclic D-ring analogs.(c) 2007 Elsevier Ltd. All rights reserved.
Cephem compounds, processes for their preparation and pharmaceutical compositions containing them