- Antibacterial activity of enrofloxacin and ciprofloxacin derivatives of β-octaarginine.
Antibacterial activity of enrofloxacin and ciprofloxacin derivatives of β-octaarginine.
Chemistry & biodiversity (2015-02-14)
Nirupam Purkayastha, Stefania Capone, Albert K Beck, Dieter Seebach, Jennifer Leeds, Katherine Thompson, Heinz E Moser
PMID25676502
ABSTRACT
β(3) -Octaarginine chains were attached to the functional groups NH and CO2 H of the antibacterial fluoroquinolones ciprofloxacin (→1) and enrofloxacin (→2), respectively, in order to find out whether the activity increases by attachment of the polycationic, cell-penetrating peptide (CPP) moiety. For comparison, simple amides, 3-5, of the two antimicrobial compounds and β(3) -octaarginine amide (βR8 ) were included in the antibacterial susceptibility tests to clarify the impact of chemical modification on the microbiological activity of either scaffold (Table).
MATERIALS
Product Number
Brand
Product Description
Sigma-Aldrich
Water, for embryo transfer, sterile-filtered, BioXtra, suitable for mouse embryo cell culture
Supelco
Residual Solvent - Acetonitrile(solution in DMSO), Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Diethyl ether, ACS reagent, ≥98.0%, contains ≤2% ethanol and ≤10ppm BHT as inhibitor
Pure Water Density Standard, UKAS ISO/IEC17025 and ISO Guide 34 certified, density: 0.9982 g/mL at 20 °C, density: 0.9970 g/mL at 25 °C
Pure Water Density Standard, UKAS ISO/IEC17025 and ISO Guide 34 certified, density: 0.9982 g/mL at 20 °C, density: 0.9970 g/mL at 25 °C
Sigma-Aldrich
Diethyl ether, reagent grade, ≥98%, contains ≤2% ethanol and ≤10ppm BHT as inhibitor
Sigma-Aldrich
Diethyl ether, contains BHT as inhibitor, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.8% (GC)
Sigma-Aldrich
Diethyl ether, puriss., contains ~5 mg/L 2,6-di-tert.-butyl-4-methylphenol as stabilizer, meets analytical specification of Ph. Eur., BP, ≥99.5% (GC)