A new macrocyclic ligand (H2L) was synthesized by reaction of Acenaphthoquinone and oaminophenol. Then, its Co (II), Ni (II), Cu (II), Zn (II) and Cd (II) complexes were synthesized by the condensation method. Macrocyclic ligand (H2L) and Co(NO3)2.6H2O, Ni(NO3)2.6H2O, Cu(NO3)2.6H2O, ZnCl2.2H2O and CdCl2.2H2O respectively. The ligand and its complexes have been characterized by IR, H, UV–Vis spe...

Azacalix[5]pyridine, a heteroatom bridged calixaromatic with an odd number of arene units, and azacalix[10]pyridine, a giant molecular belt, were selectively synthesized based on a 2 + 3 macrocyclic coupling strategy; both novel macrocyclic hosts formed strong 1 : 1 complexes with fullerenes C60 and C70 in a size-selective manner with association constants up to 1.3 x 10(5) +/- 0.03 x 10(5) M(-1).

introduction, topologically constrained azamacrocycles, defined as macrocycles having additional bridges besides the basic parent ring between nitrogen atoms donors, will be discussed. Special attention will be paid to a unique class of macrocycles consisting of cross-bridged macrocyclic ligands having added components of topological and rigidity constraints. These impart exceptional kinetic an...

Tetraaza Macrocyclic complexes of transition metals of Ni (II), Cu(II), Cr(III), Fe(III), Mn(II) were synthesized in methanolic media by template method. The complexes were characterized by elemental analysis, UVVis, Infrared spectroscopy. In vitro antibacterial activity of macrocyclic complexes against five bacteria i.e. Streptococcus mutans, Escherichia coli, Staphylococcus aureus, Streptococ...

A new chiral stationary phase (CSP) was prepared by attachment of macrocyclic glycopeptide antibiotic eremomycin to the epoxy-activated silica under mild conditions. In contrast to CSP with immobilized vancomycin, which is a close structural analogue of eremomycin, the prepared CSP reveals high enantioselectivity for separation of amino acids enantiomers. It was demonstrated by the example of r...

Macrocyclic complexes of Mn, Co and Cu via Schiff base reactions. These 12membered tetradentate N6-macrocyclic complexes were characterized by elemental analysis, conductance, magnetic susceptibility measurements and the spectral studies like IR spectra, Electronic spectra and NMR spectra.Thus, themacrocyclic ligand coordinates through imine and secondary amine nitrogens of the macrocyclicring....

The Na+ ion-assisted recognition of urea derivatives by BPX26C6 has allowed the construction of a redox-controllable [2]rotaxane-type molecular switch based on two originally very weakly interacting host/guest systems. Using NOBF4 to oxidize the triarylamine terminus into a corresponding radical cation attracted the macrocyclic component toward its adjacent carbamate station; subsequent additio...

A highly stereocontrolled, convergent total synthesis of kendomycin [(-)-TAN2162], an ansa-macrocyclic antibiotic, is reported. The key of the strategy is an unprecedented Tsuji-Trost macrocyclic etherification, followed by a transannular Claisen rearrangement to construct the 18-membered carbocyclic framework. The oxa-six- and five-membered rings were also stereoselectively constructed respect...

A couple of enantiomers of novel chiral macrocyclic imines based on R/S-camphor were asymmetrically synthesized. Through the chiral macrocyclic ligands, enantiomers of nickel(II) coordination compounds were obtained. The chirality of the ligand was transferred to the nickel atom upon coordination, leading to predetermined configuration. The chiral ligands and corresponding nickel coordination c...