Synthesis, spectroscopic investigations, crystal structures and antibacterial activity of 3-(3-hydroxypyridin-2-ylamino)-1-phenylbut-2-en-1-one and its diorganotin(IV) complexes

Synthesis and biological activity of trinuclear seven-coordinated tin(IV) complexes derived from tridentate ligands and trimesic acid

“…The strong absorption at 538-552 cm −1 , which is absent in the spectrum of the free ligand, was assigned to Sn-O stretch. In addition, new bands at 411-415 cm −1 , assigned to ν (Sn-N), further supports the bonding of nitrogen to the tin [78,79]. Accordingly, the weak or medium-intensity band at 510-515 cm −1 can be assigned to Sn-C stretches.…”

Diorganotin(IV) complexes with 2-furancarboxylic acid hydrazone derivative of benzoylacetone: Synthesis, X-ray structure, antibacterial activity, DNA cleavage and molecular docking

“…These compounds can also be used as coordination ligands for transition and non-transition metals; however, less attention has been paid to this type of systems. Recently we have reported synthesis, structural and theoretical studies and antibacterial activities of several Schiff bases derived from condensation of -diketones with aminophenol derivatives and their complexes with transition metals and organotins [7][8][9][10][11][12]. In continuation of our earlier work, we are herein reporting a hydrazonic derivative of a 1,3-diketone and its organotin(IV) complexes.…”

“…On the basis of the chemical shifts observed empirically for phenyltin(IV) and methyltin(IV) complexes [7][8][9][10][36][37][38][39], the coordination number of tin for both 2 and 3 is five in CDCl 3 .…”

A straightforward route for covalently anchored pyridinium salt onto upper rim of c-methylcalix[4]resorcinarene with selective antibacterial activity against Gram-positive bacteria

“…The in vitro antibacterial activity of functionalized c-methylcalix [4]resorcinarene was evaluated against Gram-positive (B. subtilis ATCC 6633 and S. aureus ATCC 6538) and Gram-negative (E. coli ATCC 25922 and P. aeruginosa ATCC 9027) bacteria by the disc diffusion method [26][27][28][29][30]35]. The standard antibiotics penicillin, streptomycin and cefixime were used as controls.…”

“…Considering the foregoing points, in pursuing our new interest in the functionalization of c-methylcalix [4]resorcinarene and 3D-network polymer based on cmethylcalix [4]resorcinarene [24,25], and in the synthesis of biologically important molecules [26][27][28][29][30], herein, we report for the first time, direct incorporation of an ionic liquid-bearing pyridinium moiety onto c-methylcalix [4]resorcinarene via a one-pot procedure. Following this synthetic strategy, the antibacterial activity of this novel compound was investigated against Gram-positive and Gram-negative bacteria.…”