The title complex, [Mn(C(6)H(5)N(2)O(4))(2)(H(2)O)(2)], was obtained by hydro-thermal synthesis. The Mn(II) atom, which lies on an inversion centre, displays a slightly distorted octa-hedral geometry. In the crystal packing, complex mol-ecules are linked by inter-molecular O-H⋯O and N-H⋯O hydrogen bonds to form a three-dimensional supramolecular structure. The title complex is isostructural wit...

A series of novel N-substituted 2-methyl imidazole derivatives have been synthesized, and their in vitro antispasmodic activity was assessed on contractions of isolated guinea pig ileum, induced by acetylcholine (5× 10M to 1× 10M), and compared with the effect of atropine. All the prototypes were synthesized and confirmed by their FTIR, HNMR, MASS and elemental spectral data. Antispasmodic acti...

An efficient, solvent free method for the N-arylation of imidazole by 1-(dodecyloxy)-4-iodobenzene using Cu(II)-NaY as catalyst and K(2)CO(3) as base is reported. By this synthetic approach, mesomorphic 3-[4-(dodecyloxy)phenyl]-1-methyl-1H-imidazol-3-ium iodide was synthesized in a two-step procedure, and its mesomorphism has been fully investigated by polarised optical microscopy, differential...

By reaction of a 1-unsubstituted imidazole (imH) with alkali and R 3'PAuC1 under phase trans­ fer conditions or in M eO H solution R3'PAu (im-./V) compounds were obtained where R' = C6H n or r-Bu, and imH was imidazole, 2-/-Pr-, 4 -N 0 2-imidazole or benzimidazole. When the Ph,Sb (or Ph3As) hom ologue was reacted, polymeric [u-(2-methylimidazolato-Ar,/V')gold(I)]„ was obtained, together with (P...

Hypoxanthine phosphoribosyltransferase (inosine monophosphate: pyrophosphate phosphoribosyltransferase EC 2.4.2.8) has been purified SO-fold from an acid-treated lysate of human erythrocytes. The average particle weight of the enzyme was estimated by gel filtration at 60,000. Between the pH values of 7.1 and 9.1 no marked difference in the initial velocity of IMP synthesis was observed. Kinetic...

Alpha-ketoglutaric acid (A-KG) is currently under investigation as promising cancer cell damaging agent and cyanide antidote. A simple, specific liquid chromatography-mass spectrometry (LC-MS/MS) method was developed for the quantitative determination of A-KG in human plasma. Derivatization of A-KG was achieved by using N-methyl imidazole in presence of trifluroacetic anhydrate. Several paramet...

The asymmetric unit of the title complex, [Hg(C(11)H(12)N(2))(2)](PF(6))(2), consists of one bis-(1-benzyl-3-methyl-imidazolium)mercury(II) cation, one half of the cation and an additional Hg(II) atom, which lies on an inversion centre, and three hexa-fluorido-phosphate anions. The Hg(II) atoms exist in a linear coordination geometry [C-Hg-C = 178.9 (2) and 180°] formed by two carbene C atoms f...

We have prepared a set of heterocyclic benzimidazole derivatives bearing amidino substituents at C-5 of benzimidazole ring, by introducing various heterocyclic nuclei (pyridine, N-methyl-pyrrole or imidazole) at C-2, and evaluated their antitumor and antiviral activities. The most pronounced antiproliferative activity was shown with compounds 6 and 9, having imidazolinylamidino-substituent. Int...

We present an all atom potential energy function for the simulation of proteins and nucleic acids. This work is an extension of the CH united atom function recently presented by S. J. Weiner et al. (J . Amer. Chem. SOC., 106,765 (1984). The parameters of our function are based on calculations on ethane, propane, n-butane, dimethyl ether, methyl ethyl ether, tetrahydrofuran, imidazole, indole, d...