This invention relates to novel multibinding compounds (agents) that are antibacterial agents. The multibinding compounds of the invention comprise from 2-10 ligands covalently connected by a linker or linkers, wherein each of said ligands in their monovalent (i.e., unlinked) state have the ability to bind to a an enzyme involved in cell wall biosynthesis and metabolism, a precursor used in the synthesis of the bacterial cell wall and/or the bacterial cell surface thereby interfere with the synthesis and/or metabolism of the cell wall. In particular the multibinding compounds of the invention comprise from 2-10 ligands covalently connected by a linker or linkers, wherein each of said ligands has a ligand domain capable of binding to penicillin binding proteins, a transpeptidase enzyme, a substrate of a transpeptidase enzyme, a beta-lactamase enzyme, pencillinase enzyme, cephalosporinase enzyme, a transglycoslase enzyme, or a transglycosylase enzyme substrate; Preferably, the ligands are selected from the beta lactam or glycopeptide class of antibacterial agents.
[EN] BIOREDUCIBLE POLY (B-AMINO ESTER)S FOR SIRNA DELIVERY<br/>[FR] POLY(ESTER B-AMINO) BIORÉDUCTIBLE POUR L'ADMINISTRATION D'ARNSI
申请人:UNIV JOHNS HOPKINS
公开号:WO2014066811A1
公开(公告)日:2014-05-01
Degradable polymers were synthesized that self-assemble with nucleic acids, proteins, hydrophobic drugs, and other small molecules to form particles that are effective for delivery into a cell, tissue and/or organism either in vitro or in vivo. The presently disclosed polymers demonstrate differential cell-type specificity, an ability to promote endosomal escape to protect the cargos from degradation and enhance delivery to the cytoplasm, and/or bioreducibility, which enables triggered intracellular drug release to be tuned to promote optimal delivery to the target cell type. The presently disclosed materials may be used to treat a wide variety of conditions or diseases, such as cancer, cardiovascular diseases, infectious diseases, and ophthalmic diseases.
N,N'-Bridged-bis[(O and/or N-substituted)-2-alkyl-2-hydroxyethylamines] of the formula ##STR1## are prepared by condensing an epoxide of the formula ##STR2## and a diamine of the formula R'NH-X-NHR'. The products and dicarbanilates, acid-addition salts, N,N'-dioxides and N,N'-diammonium quaternary salts derived therefrom have antibacterial activity in vitro and are useful as antibacterial agents.
N,N'-Bridged-bis[(O and/or N-substituted)-2-alkyl-2-hydroxyethylamines] of the formula ##STR1## are prepared by condensing an epoxide of the formula ##STR2## and a diamine of the formula R'NH--X--NHR'. The products and dicarbanilates, acid-addition salts, N,N'-dioxides and N,N'-diammonium quaternary salts derived therefrom have antibacterial activity in vitro and are useful as antibacterial agents.
N,N'-Bridged-bis[(O and/or N-substituted)-2-alkyl-2-hydroxyethylamines] of the formula ##STR1## are prepared by condensing an epoxide of the formula ##STR2## and a diamine of the formula R'NH-X-NHR'. The products and dicarbanilates, acid-addition salts, N,N'-dioxides and N,N'-diammonium quaternary salts derived therefrom have antibacterial activity in vitro and are useful as antibacterial agents.