Synthesis and Antibacterial Activity of Novel C12 Vinyl Ketolides
摘要:
A novel series Of C-12 vinyl erythromycin derivatives have been discovered which exhibit in vitro and in vivo potency against key respiratory pathogens. The C-12 modification involves replacing the natural C-12 methyl group in the erythromycin core with a vinyl group via chemical synthesis. From the C-12 vinyl macrolide core, a series Of C-12 vinyl ketolides was prepared. Several compounds were found to be potent against macrolide-sensitive and -resistant bacteria. The C-12 vinyl ketolides 6j and 6k showed a similar antimicrobial spectrum and comparable activity to the commercial ketolide telithromycin. However, the pharmacokinetic profiles Of C-12 vinyl ketolides 6j and 6k in rats differ from that of telithromycin by having higher lung-to-plasma ratios, larger volumes of distribution, and longer half-lives. These pharmacokinetic differences have a pharmacodynamic effect as both 6j and 6k exhibited better in vivo efficacy than telithromycin in rat lung infection models against Streptococcus pneumoniae and Haemophilus influenzae.
Synthesis and Antibacterial Activity of Novel C12 Vinyl Ketolides
摘要:
A novel series Of C-12 vinyl erythromycin derivatives have been discovered which exhibit in vitro and in vivo potency against key respiratory pathogens. The C-12 modification involves replacing the natural C-12 methyl group in the erythromycin core with a vinyl group via chemical synthesis. From the C-12 vinyl macrolide core, a series Of C-12 vinyl ketolides was prepared. Several compounds were found to be potent against macrolide-sensitive and -resistant bacteria. The C-12 vinyl ketolides 6j and 6k showed a similar antimicrobial spectrum and comparable activity to the commercial ketolide telithromycin. However, the pharmacokinetic profiles Of C-12 vinyl ketolides 6j and 6k in rats differ from that of telithromycin by having higher lung-to-plasma ratios, larger volumes of distribution, and longer half-lives. These pharmacokinetic differences have a pharmacodynamic effect as both 6j and 6k exhibited better in vivo efficacy than telithromycin in rat lung infection models against Streptococcus pneumoniae and Haemophilus influenzae.
C12 Modified erythromycin macrolides and ketolides having antibacterial activity
申请人:——
公开号:US20030125266A1
公开(公告)日:2003-07-03
Antimicrobial macrolide compounds are provided having formulas II:
1
as well as pharmaceutically acceptable salts, esters or prodrugs thereof; pharmaceutical compositions comprising such compounds; methods of treating bacterial infections by the administration of such compounds; and processes for the preparation of the compounds.
Antimicrobial macrolide and ketolide compounds are provided having formulas XII:
as well as pharmaceutically acceptable salts, esters or prodrugs thereof; pharmaceutical compositions comprising such compounds; methods of treating bacterial infections by the administration of such compounds; and processes for the preparation of the compounds.