the interaction of p-sulphonatocalix [6] arene towards l-arginine and l-lysine has been studied inacidic aqueous solution (p1-1 2) using uv-vis spectrophotometric titration technique. the psulphonatocalix[6] arene was found to be able to form 1:1 complexe with amino acids in water.the values of the association constant were determined at different temperatures to evaluate thethermodynamic funct...

Enantiopure cis-dihydrodiol bacterial metabolites of substituted benzene substrates were used as precursors, in a chemoenzymatic synthesis of the corresponding benzene oxides and of a substituted oxepine, via dihydrobenzene oxide intermediates. A rapid total racemization of the substituted benzene 2,3-oxides was found to have occurred, via their oxepine valence tautomers, in accord with predict...

A pillar[4]arene[1]quinone and a difunctionalized pillar[5]arene have been synthesized by partial oxidation.

A macro-/mesoporous polymeric network with densely incorporated pillar[5]arene functionality was prepared via ionic complexation between a polymerized ionic liquid and carboxylated pillar[5]arene. It retained the solution-state host-guest property of the pillar[5]arene and was successfully applied as a selective absorbent for n-alklyene diols.

A series of calix[4]arene-supported Ln(III)(6) clusters have been synthesised under facile bench top conditions. The magnetic and structural properties of these clusters are reported, the latter suggesting that the Ln(III)-calix[4]arene moiety may be used for the construction of other assemblies in a manner akin to that for the Mn(III)-calix[4]arene analogue.

Three large negatively charged organic host molecules; β-cyclodextrin sulphate, para-sulphonato-calix[6]arene and para-sulphonato-calix[8]arene have been shown to be effective inhibitors of endonuclease in the low micromolar range, additionally para-sulphonato-calix[8]arene is a partial inhibitor of rhDNase I.

The differences in the macrocyclic structures lead to different flexibilities, and yet effect of solvents on conformations is not clear so far. In this work, four representational molecules (pillar[5]arene, p-tert-butyl calix[6]arene, benzylic amide macrocycle dibenzo-18-crown-6) three with distinct polarity have been studied by all-atom molecular dynamics simulations. structural features macro...

Cofacial Fe2, Co2, and Ni2 complexes supported by a para-terphenyl diphosphine ligand were prepared. Central arene deplanarization and a μ2:(η(3),η(3)) coordination mode suggest partial bisallyl character in the Fe2 and Co2 complexes. An oxidation induced shift in Fe2-arene binding highlights the non-innocent nature of the arene ligand.

The low density polymorph of the well-known host p-tert-butylcalix[4]arene absorbs more methane than p-tert-pentylcalix[4]arene at room temperature and 1 atm pressure, but the order of absorption is reversed at 38 atm with p-tert-pentylcalix[4]arene absorbing more.

Arene oxide derivatives of carcinogenic polycyclic hydro carbons have been postulated as the reactive intermediates responsible for the in vivo binding of the parent hydrocar bon to cellular nucleic acids. In this study the reaction of 12 different Kand non-K-region arene oxides and 7 benzo(a)pyrene phenols with polyguanylic acid in aqueous acetone solutions has been investigated. The extent of...