Synthesis and in vitro antibacterial activity of spermidine-based mixed catechol- and hydroxamate-containing siderophore—Vancomycin conjugates
作者:Manuka Ghosh、Marvin J. Miller
DOI:10.1016/0968-0896(95)00161-1
日期:1996.1
The first antibioticconjugates of vancomycin (1) and siderophore analogues containing spermidine-based catechol ligands (conjugate 11) as well as mixed catechol and hydroxamate ligands (conjugate 13) are described. The design of the conjugates was based on the earlier observation that conjugation of siderophore components to beta-lactam antibiotics induced active iron transport-mediated drug delivery
A compound, comprising: an Fe(III)-binding and/or Fe(III)-bound siderophore; one or more optional linker covalently bound to the siderophore; and daptomycin covalently bound to the linker, or, if no linker is present, then to the siderophore; or pharmaceutically acceptable salt or solvate thereof.
Biscatecholate–Monohydroxamate Mixed Ligand Siderophore–Carbacephalosporin Conjugates are Selective Sideromycin Antibiotics that Target Acinetobacter baumannii
作者:Timothy A. Wencewicz、Marvin J. Miller
DOI:10.1021/jm400265k
日期:2013.5.23
Chemical syntheses and biological evaluation of biscatecholate-monohydroxamate mixed ligand sideromycins utilizing the carbacephalosporin beta-lactam antibiotic loracarbef and the fluoroquinolone antibiotic ciprofloxacin are described. The mixed ligand beta-lactam sideromycin (1b) had remarkably selective and extremely potent antibacterial activity against the Gram-negative pathogen Acinetobacter baumannii ATCC 17961 (MIC = 0.0078 mu M). The antibacterial activity of the beta-lactam sideromycin was inversely related to the iron(III) concentration in the testing media and was antagonized by the presence of the competing parent siderophore. These data suggested that active transport of the mixed ligand beta-lactam sideromycin across the outer cell membrane of A. baumannii via siderophore-uptake pathways was responsible for the selective and potent antibacterial activity.
ANTIBACTERIAL SIDEROMYCINS
申请人:Hsiri Therapeutics, Inc.
公开号:US20190153010A1
公开(公告)日:2019-05-23
A compound, comprising: an Fe(III)-binding and/or Fe(III)-bound siderophore; one or more optional linker covalently bound to the siderophore; and daptomycin covalently bound to the linker, or, if no linker is present, then to the siderophore; or pharmaceutically acceptable salt or solvate thereof.
A compound, comprising: an Fe(III)-binding and/or Fe(III)-bound siderophore; one or more optional linker covalently bound to the siderophore; and daptomycin covalently bound to the linker, or, if no linker is present, then to the siderophore; or pharmaceutically acceptable salt or solvate thereof.