Bis(2,2'-bipyridyl-κN,N')bis-(2-hydroxy-benzoato)-κO;κO,O-cadmium(II) methanol solvate.

The title compound, [Cd(C(7)H(5)O(3))(2)(C(10)H(8)N(2))(2)]·CH(3)OH, contains one monomeric seven-coordinate cadmium complex and one methanol solvate mol-ecule. The Cd(II) atom is coordinated to two 2,2'-bipyridyl ligands via the N atoms and to two salicylate anions (Hsal(-)) via the carboxyl-ate O atoms, which act as monodentate ligand for the one and bidentate ligand for the second. The Cd(II) atom exhibits a {6 + 1} environment, approximately described as a distorted capped octa-hedron with the apical positions occupied by one of the two N atoms belonging to one bipyridyl ligand and one of the two carboxyl-ate O atoms from the monodentate Hsal(-) ligand.

Rapid assembly of the polyhydroxylated beta-amino acid constituents of microsclerodermins C, D, and E.

A very short and efficient synthesis of protected derivatives of APTO and AETD, the complex polyhydroxylated beta-amino acid residues present in microsclerodermins C, D, and E, is described. The targets are obtained in only five steps, in 23% and 16% overall yields, respectively. The key transformation involves the completely diastereoselective two-carbon homologation of appropriately selected intermediate chiral sulfinimines.

Dibromidobis-(4-hydr-oxy-1,5-dimethyl-2-phenyl-3-pyrazolone)zinc(II).

In the title compound, [ZnBr(2)(C(11)H(12)N(2)O(2))(2)], the Zn(II) ion is coordinated by two Br atoms and two O atoms from two 4-hydroxy-anti-pyrine mol-ecules via the carbonyl O atoms, which act as monodentate ligands, giving rise to a distorted tetra-hedral geometry. The values of the bond angles at the Zn atom are in the range 99.4 (1) to 113.

Dichloridobis[(S)-2-hydroxy-propion-amide-κO,O']manganese(II).

In the title compound, [MnCl(2)(C(3)H(7)NO(2))(2)], the Mn(II) ion is bound to two Cl atoms and to four O atoms from two lacta-mide mol-ecules which act as bidentate ligands, giving rise to a highly distorted octa-hedral coordination geometry. The axial positions are occupied by one Cl atom and one O (hydr-oxy) atom. The values of the cis bond angles at the Mn atom are in the range 72.

Tris[(R)-lactamide-kappa2O,O']zinc(II) tetrabromozincate.

The title compound, tris[(R)-2-hydroxypropanamide-kappa2O,O']zinc(II) tetrabromozincate, [Zn(C3H7NO2)3][ZnBr4], contains one monomeric six-coordinate zinc complex cation and one tetrahedral [ZnBr4]2- anion. Both Zn(II) atoms lie on threefold axes. Coordination in the cation occurs via the amide and hydroxy O atoms [Zn-O = 2.

Low-temperature (180 K) crystal structures of tetrakis-mu-(niflumato)di(aqua)dicopper(II) N,N-dimethylformamide and N,N-dimethylacetamide solvates, their EPR properties, and anticonvulsant activities of these and other ternary binuclear copper(II)niflumate complexes.

Two pseudopolymorphs, solvates, of [Cu(2)(II)(niflumate)(4)(H(2)O)(2)] of unknown structure were obtained following solution of [Cu(2)(II)(niflumate)(4)(H(2)O)(2)] in N,N-dimethylacetamide (DMA) or N,N-dimethylformamide (DMF). Low-temperature crystal structures obtained for these solvates revealed that they were ternary aqua DMA and DMF solvates: [Cu(2)(II)(niflumate)(4)(H(2)O)(2)].4DMA and [Cu(2)(II)(niflumate)(4)(H(2)O)(2)].

Synthesis, crystal structures, and anti-convulsant activities of ternary [Zn(II)(3,5-diisopropylsalicylate)(2)], [Zn(II)(salicylate)(2)] and [Zn(II)(aspirinate)(2)] complexes.

Following observations that bis(3,5-diisopropylsalicylato)diaquazinc(II), [Zn(II)(3,5-DIPS)(2)(H(2)O)(2)], had anti-convulsant activity, bis(acetylsalicylate)diaquazinc(II), [Zn(II)(aspirinate)(2)(H(2)O)(2)], and the Zn(II) ternary 1,10-phenanthroline (phen), 2,9-dimethyl-1,10-phenanthroline (neocuproine, NC) or dimethyl sulfoxide (DMSO) complexes of Zn(II)3,5-diisopropylsalicylate, salicylate, and acetylsalicylate were synthesized and spectroscopically characterized. Anti-convulsant and Rotorod toxicity activities of these complexes were determined to examine their anti-convulsant and undesirable central nervous stimulant or depressant activities of these Zn(II) non-steroidal anti-inflammatory agent complexes. Bis(3,5-diisopropylsalicylato)-1,10-phenanthorlinezinc(II), [Zn(II)(3,5-DIPS)(2)(phen)], (1) has one bidentate phen ligand and two mono-deprotonated 3,5-DIPS ligands.

Synthesis, SAR, crystal structure, and biological evaluation of benzoquinoliziniums as activators of wild-type and mutant cystic fibrosis transmembrane conductance regulator channels.

Chloride channels play important roles in homeostasis and regulate cell volume, transepithelial transport, and electrical excitability. Despite recent progress made in the genetic and molecular aspect of chloride channels, their pharmacology is still poorly understood. The cystic fibrosis transmembrane conductance regulator (CFTR) is a cAMP-regulated epithelial chloride channel for which mutations cause cystic fibrosis.

Low-temperature (180 K) crystal structure, electron paramagnetic resonance spectroscopy, and propitious anticonvulsant activities of CuII2(aspirinate)4(DMF)2 and other CuII2(aspirinate)4 chelates.

The purpose of this research was to characterize by X-ray crystallography the ternary dimethylformamide (DMF) Cu(II) complex of acetylsalicylic acid (aspirin), in an effort to compare the structure-activity relationships for the anticonvulsant activity of this and other Cu(II)aspirinate chelates. The ternary DMF Cu(II) complex of aspirin was synthesized and crystals grown from a DMF solution were characterized by single crystal X-ray diffraction. This crystalline material was analyzed for anticonvulsant activity in the Maximal Electroshock (MES) Grand Mal and subcutaneous Metrazol (scMET) Petit Mal models of seizure used to detect anticonvulsant activity.

Bis(isoquinoline-1-carboxylato-kappa2O,N)(1,10-phenanthroline-kappa2N,N')zinc(II) dimethylformamide sesquisolvate.

The asymmetric unit of the title compound, [Zn(C(10)H(6)NO(2))(2)(C(12)H(8)N(2))] x 1.5C(3)H(7)NO, contains one monomeric zinc complex and 1.5 disordered dimethylformamide solvate molecules.

Synthesis, crystal structure, EPR properties, and anti-convulsant activities of binuclear and mononuclear 1,10-phenanthroline and salicylate ternary copper(II) complexes.

Two ternary Cu(II) complexes of 1,10-phenanthroline (phen) and singly (Hsal(-)) or dideprotonated (sal(2-)) salicylate ligands were synthesized, their X-ray crystal structure and electron paramagnetic resonance spectral characteristics determined, and evaluated for anti-convulsant activities in the maximal electroshock (MES) and Metrazol models of seizure and Rotorod toxicity. The X-ray crystal structure of [bis(1,10-phenanthroline)-mu-bis(salicylato-O,O')dicopper(II)] dihydrate, 1, ([Cu(II)(2)(phen)(2)(sal)(2)].2[H(2)O]), shows it to be binuclear.