An Efficient Synthesis of Novel Aminothiazolylacetamido-Substituted 3,5-Bis(arylidene)-4-piperidone Derivatives and Their Cytotoxicity Studies.

The expansion of 3,5-bis(arylidene)-4-piperidone derivatives with heterocyclic compounds such as 1,3-thiazole should take into account this correlation. The synthesized aminothiazolylacetamido-substituted 3,5-bis(arylidene)-4-piperidone derivatives - were found to have GI values in the range of 0.15-0.

Synthesis and structures of dinuclear palladium complexes with 1,3-benzimidazolidine-2-thione and 1,3-imidazoline-2-thione.

The synthesis and structures of dinuclear palladium complexes with 1,3-benz-imidazolidine-2-thione (bzimtH) and 1,3-imidazoline-2-thione (imtH) are reported, namely, bis-(μ-1-benzimidazole-2-thiol-ato)-κ :;κ : -bis-[cyanido(tri-phenyl-phosphine-κ)palladium(II)], [Pd(CHNS)(CN)(CHP)] or [Pd(μ-,-bzimtH)(CN)(PPh)] (), and bis-(μ-1-imidazole-2-thiol-ato)-κ :;κ : -bis-[cyanido(tri-phenyl-phosphine-κ)palladium(II)] aceto-nitrile 0.58-solvate, [Pd(CHNS)(CN)(CHP)]·0.58CHN or [Pd(μ-,-imtH)(CN)(PPh)]·0.

Three-Component [3+2] Cycloaddition for Regio- and Diastereoselective Synthesis of Spirooxindole-Pyrrolidines.

1,3-Dipolar cycloaddition of nonstabilized azomethine ylides derived from α-C-H functionalization of tetrahydroisoquinoline for regio- and diastereoselective synthesis of spirooxindole-pyrrolidines is developed. A three-component reaction of readily available cyclic amine, aryl aldehydes, and olefinic oxindoles provides a pot, atom and step economy (PASE) approach for making spiro-heterocyclic compounds with biological interest.

Incorporation of generated 3,3'-(sulfane-diyl)bis-(1-methyl-1,3-imidazolidine-2-thione) into a one-dimensional Cu coordination polymer with sulfur-bridged {Cu S} central cores.

The reaction of [Cu(CHCN)](BF) with 1-methyl-1,3-imidazolidine-2-thione {SCH(NMe)NH}, under aerobic conditions at room temperature, yielded an unusual one-dimensional coordination polymer, namely, -poly[[[(1-meth-yl-1,3-imidazolidine-2-thione-κ)copper(I)]-μ-(1-methyl-1,3-imidazolidine-2-thione)-κ :-copper(I)-μ-[3,3'-(sulfanedi-yl)bis-(1-methyl-1,3-imidazolidine-2-thione)]-κ ,','':,''] bis-(tetra-fluorido-borate)], {[Cu(CHNS)(CHNS)](BF)} or [Cu(κ: -N-S-N- )(κ: -NH)(κ: -NH)] (BF) [ = SC H(NMe)NH] with sulfur-bridged {Cu S} central cores. The generated bis-(1-methyl-1,3-imidazolidinyl-2-thione) sulfide [{SCH(NMe)NSN(NMe)CHS; abbrev. -N-S-N- ] ligand, in combin-ation with 1-methyl-1,3-imidazolidine-2-thione ( -NH) ligands, construct this coordination polymer.

Synthesis, characterization and antitubercular activities of heterocyclic selenosemicarbazones.

Reaction of cyclohexanoneselenosemicarbazone with aldehydes and ketones containing heterocyclic rings (2-oxindole, 6-cholro-2-oxindole, 3-methyl-2-oxindole, isatin, 1-methyl isatin, furfural, pyrrole-2-carboxldehyde) in ethanol yielded, respective, selenosemicarbazones {2-oxindoleselenosemicarbazone (2-HOxsesc,HL), 6-chloro-2-oxindole selenosemicarbazone (6-ClHOxsesc, HL), 3-methyl-2-oxindole selenosemicarbazone (3-MeHOxses, HL), isatinselenosemicarbazone (HIstsesc, HL), 1-methyl isatinselenosemicarbazone (1-MeHIstsesc, HL), 2-thiopheneselenosemicarbazone (2-Hthiosesc, HL), 2-furfuralselenosemicarbazone (2-Hfursesc, HL) and 2-pyrrole selenosemicarbazone (2-Hpysesc, HL)}. However the similar reaction with aldehyde containing single aromatic ring (3-chlorobenzaldehyde and 4-chlorobenzaldehyde) formed 1, 2-bis(3-chlorobenzylidiene) hydrazine (A) and 1, 2-bis(4-chlorobenzylidiene) hydrazine (B) rather than selenosemicarbazone. All the synthesized compounds were characterized using IR and NMR (H, C) spectroscopy.

Chloro-cobalt complexes with pyridyl-ethyl-derived di-aza-cyclo-alkanes.

Syntheses are described for the blue/purple complexes of cobalt(II) chloride with the tetra-dentate ligands 1,4-bis-[2-(pyridin-2-yl)eth-yl]piperazine (Ppz), 1,4-bis-[2-(pyridin-2-yl)eth-yl]homopiperazine (Phpz), -2,5-dimethyl-1,4-bis-[2-(pyridin-2-yl)eth-yl]piperazine (Pdmpz) and tridentate 4-methyl-1-[2-(pyridin-2-yl)eth-yl]homopiperazine (Pmhpz). The CoCl complexes with Ppz, namely, {μ-1,4-bis-[2-(pyridin-2-yl)eth-yl]piperazine}bis-[di-chlorido-cobalt(II)], [CoCl(CHN)] or Co(Ppz)Cl, and Pdmpz (structure not reported as X-ray quality crystals were not obtained), are shown to be dinuclear, with the ligands bridging the two tetra-hedrally coordinated CoCl units. Co(Ppz)Cl and {di-chlorido-{4-methyl-1-[2-(pyridin-2-yl)eth-yl]-1,4-di-aza-cyclo-hepta-ne}cobalt(II) [CoCl(CHN)] or Co(Pmhpz)Cl, crystallize in the monoclinic space group 2/, while crystals of the penta-coordinate mono-chloro chelate 1,4-bis-[2-(pyr-id-in-2-yl)eth-yl]piperazine}chlorido-cobalt(II) perchlorate, [CoCl(CHN)]ClO or [Co(Ppz)Cl]ClO, are also monoclinic (2).

Antioxidant and Antivenom Potential of an Essential Oil, 4-(2-Oxo-propyl)-cyclopentane-1,3-dione, and Allantoin Derived from the Polyherbal Combination of L. and L.

The goal of this study was to identify new compounds from a methanol extract of a polyherbal combination of L. and L. (MECAIPN), two traditional medicinal plants used to cure envenomation, as well as to assess their antioxidant and antivenom properties.

Bis[3-(anthracen-9-yl)pentane-2,4-dionato-κ ,'](,-di-methyl-formamide-κ)[tris-(pyrazol-1-yl-κ )hydroborato]europium(III).

The title compound, [Eu(CHBN)(CHO)(CHNO)] or [TpEu(Anthracac)(DMF)], was synthesized by reaction of a tris-(pyrazol-yl)borate (Tp) Eu complex with 3-(anthracen-9-yl)pentane-2,4-dione (HAnthracac) in the presence of tri-ethyl-amine. In the title compound, Eu is located in an octa-vertex square-pyramidal coordination environment. In the two Anthracac ligands, the anthracene and nearly planar acetyl-acetonate fragments are almost orthogonal.

Pseudo-Five-Component Reaction for Diastereoselective Synthesis of Butterfly Shaped Bispiro[Oxindole-Pyrrolidine]s.

A pseudo-five-component reaction involving double decarboxylative 1,3-dipolar cycloaddition of azomethine ylides with olefinic oxindoles for the diastereoselective synthesis of bispiro[oxindole-pyrrolidine]s is developed. The major diastereomers are unique butterfly shaped compounds with a plane of symmetry. Recyclable zeolite HY acid catalyst is used to promote the reaction, and only CO and HO are generated as byproducts.

Geometrical variations of two manganese(II) complexes with closely related quinoline-based tripodal ligands.

Structural analyses of the compounds di-μ-acetato-κ :'-bis-{[2-meth-oxy-,-bis-(quinolin-2-ylmeth-yl)ethanamine-κ ,','',]manganese(II)} bis-(tetra-phen-yl-borate) di-chloro-methane 1.45-solvate, [Mn(CO)(CHNO)](CHB)·1.45CHCl or [Mn(DQMEA)(μ-OAc)Mn(DQMEA)](BPh)·1.

Crystal structure and Hirshfeld surface analysis of ethyl 2-[9-(2-hy-droxy-phen-yl)-3,3,6,6-tetra-methyl-1,8-dioxo-2,3,4,4a,5,6,7,8a,9,9a,10,10a-dodeca-hydro-acridin-10-yl]acetate.

In the title compound, CHNO, a 3,3,6,6-tetra-methyl-tetra-hydro-acridine-1,8-dione ring system carries an ethyl acetate substituent on the acridine N atom and an -hy-droxy-phenyl ring on the central methine C atom of the di-hydro-pyridine ring. The benzene ring is inclined to the acridine ring system at an angle of 80.45 (7)° and this conformation is stabilized by an intra-molecular O-H⋯O hydrogen bond between the hy-droxy substituent on the benzene ring and one of the carbonyl groups of the acridinedione unit.

Crystal structures of 1-(4-chloro-phen-yl)-4-(4-methyl-phen-yl)-2,5-dioxo-1,2,5,6,7,8-hexa-hydro-quinoline-3-carb-oxy-lic acid and 4-(4-meth-oxy-phen-yl)-1-(4-methyl-phen-yl)-2,5-dioxo-1,2,5,6,7,8-hexa-hydro-quinoline-3-carbo-nitrile.

In the title compounds CHClNO [, namely 1-(4-chloro-phen-yl)-4-(4-methyl-phen-yl)-3,8-dioxo-1,2,5,6,7,8-hexa-hydro-quine-3-carb-oxy-lic acid] and CHNO [, namely 4-(4-meth-oxy-phen-yl)-1-(4-methyl-phen-yl)-2,5-dioxo-1,2,5,6,7,8-hexa-hydro-quinoline-3-carbo-nitrile], each of the cyclo-hexene and di-hydro-pyridine rings of the 1,2,5,6,7,8-hexa-hydro-quinoline moieties adopts a twisted-boat conformation. The asymmetric units of both compounds and consist of two independent mol-ecules ( and ). In , three carbon atoms of the cyclo-hexene ring are disordered over two sets of sites in a 0.

Synthesis of (3-nitro-2-oxo-benzaldehyde thiosemicarbazonato)-zinc(II) complexes: the position of nitro group in phenyl ring alters antimicrobial activity against 1, 2, MRSA and .

The basic purpose of this investigation was to explore the effect on antimicrobial activity of a nitro group at an ortho- versus para-position in the 2-hydroxy-phenyl ring of nitro-salicylaldehyde-N-substituted thiosemicarbazone (X-NO2-stscH2-N1HR, X = 3 or 5; stsc-stands for salicyladehyde thiosemicarbazone) complexes with zinc. Reactions of zinc(ii) acetate with 3-nitro-salicylaldehyde-N-substituted thiosemicarbazones (3-NO2-stscH2-N1HR) and 2,2-bipyridine, or 1,10-phenanthroline as co-ligands, yielded complexes of stoichiometry, [Zn(3-NO2-stsc-N1HR)(N,N-L)] {L, R: bipy, H, 1; Me, 2; Et, 3; Ph, 4; phen, H, 5; Me, 6; Et, 7; Ph, 8}. The thio-ligands coordinate to the metal as dianions (deprotonation of -OH and -N2H moieties) through O, N3 and S donor atoms in distorted trigonal bipyramid geometry (4, 5, 7: τ = 0.

Copper(I) and silver(I) complexes of anthraldehyde thiosemicarbazone: synthesis, structure elucidation, anti-tuberculosis/cytotoxic activity and interactions with DNA/HSA.

A reaction of copper(i) halides (X = I, Br, Cl) and silver(i) halides with 9-anthraldehyde thiosemicarbazone (9-Hanttsc, H1L) and triphenylphosphine produced halogen-bridged dinuclear complexes, [M2(μ2-X)2(η1-S-9-Hanttsc)2(Ph3P)2] (M = Cu, X = Cl, 1; Br, 2; I, 3; M = Ag, X = Cl, 4; Br, 5). A similar reaction of 9-anthraldehyde-N1-methyl thiosemicarbazone (9-Hanttsc-N1-Me, H2L) with Ph3P and silver(i) halides yielded sulfur-bridged dimers, [Ag2X2(μ2-S-9-Hanttsc-N1-Me)2(Ph3P)2] (X = Cl, 9; Br, 10), however with copper(i) halides insoluble compounds were formed, which upon the addition of one extra mole of Ph3P gave mononuclear complexes of the formula [CuX(η1-S-9-Hanttsc-N1-Me)(Ph3P)2] (X = Cl, 6; Br, 7; I, 8). All of the complexes have been characterized by elemental analysis, NMR (1H, 13C) spectroscopy and single crystal X-ray crystallography (2, 5, 6, and 9).

Crystal structure and spectroscopic properties of aqua-dichlorido-{1,1'-[(pyridine-2,6-diyl-κ)bis(methyl-ene)]bis-(4-butyl-4,5-di-hydro-1-1,2,4-triazole-5-thione-κ )}cobalt(II).

The structure of the title compound, [CoCl(CHNS)(HO)], at 173 K has monoclinic (2/) symmetry. We report here the synthesis, single-crystal structure, electrospray mass spectrum and NMR spectroscopy of a new six-coordinate cobalt(II) pincer complex. The pincer ligand, in this complex, which is novel, coordinates three nitro-gen atoms (two triazole and one pyridine).

Di-2-pyridylketone-N-substituted thiosemicarbazone derivatives of copper(II): Biosafe antimicrobial potential and high anticancer activity against immortalized L6 rat skeletal muscle cells.

The basic aim of this study pertains to developing antimicrobial or anticancer agents based on N, S-donor organic ligands bonded to metals. In the present investigation, di-2-pyridylketone-N-substituted thiosemicarbazone (pytscH-NHR, Chart 2) thio-ligands were reacted with copper(I) halides in organic solvents yielding copper(II) complexes of stoichiometry, [Cu(N,N,S-pytsc-NHR)X] (X = I, R = H, 1; Me, 2; Et, 3; Ph, 4; X = Br, R = H, 5; Me, 6; Et, 7; Ph, 8; X = Cl, R = H, 9; Me, 10; Et, 11; Ph, 12); the formation of Cu probably occurs through a proton coupled electron transfer (PCET) process. Electron spin resonance, ultraviolet-visible spectroscopy and X-ray crystallography (2, 3, 5, 7, 11) supported a distorted square planar geometry of these complexes.

-Di-aqua-bis-(,,'-tri-methyl-ethylenedi-amine)-nickel(II) dichloride.

In the title salt, [Ni(CHN)(HO)]Cl, the asymmetric unit is comprised of half of the complex cation and a chloride ion with the Ni atom of the cation situated about a twofold rotation axis. The six-coordinate Ni atom of the cation is connected to four N atoms from two methyl-substituted ethyelenedi-amine ligands and two water mol-ecules in a slightly distorted octa-hedral environment. The five-membered chelate ring is in a slight envelope conformation.

Synthesis, X-ray crystal structure elucidation and Hirshfeld surface analysis of -((4-(1-benzo[]imidazole-2-yl)phenyl)carbamothioyl)benzamide: investigations for elastase inhibition, antioxidant and DNA binding potentials for biological applications.

The interest in the present study pertains to the development of a new compound based upon a benzimidazole thiourea moiety that has unique properties related to elastase inhibition, free radical scavenging activity and its DNA binding ability. The title compound, -(4-(1-benzo[]imidazol-2-yl)phenyl)-3-benzoyl thiourea (CHNOSHO:TUBC), was synthesized by reacting an acid chloride of benzoic acid with potassium thiocyanate (KSCN) along with the subsequent addition of 4-(1-benzo[]imidazol-2-yl)benzenamine a one-pot three-step procedure. The structure of the resulting benzimidazole based thiourea was confirmed by spectroscopic techniques including FTIR, H-NMR, C-NMR and single crystal X-ray diffraction and further examined by Hirshfeld surface analysis.

Synthesis, crystal structure, DFT calculations and Hirshfeld surface analysis of 3-butyl-2,6-bis-(4-fluoro-phen-yl)piperidin-4-one.

The title compound, CHFNO, consists of two fluoro-phenyl groups and one butyl group equatorially oriented on a piperidine ring, which adopts a chair conformation. The dihedral angle between the mean planes of the phenyl rings is 72.1 (1)°.

Combination of single-molecule magnet behaviour and luminescence properties in a new series of lanthanide complexes with tris(pyrazolyl)borate and oligo(β-diketonate) ligands.

A series of tris(pyrazolyl)borate mono-, di- and trinuclear complexes, [TpLn]X (Ln = Eu, Tb, Gd, Dy, X = various mono-, bis- and tris(β-diketonates) has been prepared. The Tb and Dy complexes are luminescent single molecular magnets (SMM) and exhibit luminescence quantum efficiencies up to 73% for the Tb and 4.4% for the Dy compounds.

Preparation of SNS Cobalt(II) Pincer Model Complexes of Liver Alcohol Dehydrogenase.

Chemical model complexes are prepared to represent the active site of an enzyme. In this protocol, a family of tridentate pincer ligand precursors (each possessing two sulfur and one nitrogen donor atom functionalities (SNS) and based on bis-imidazole or bis-triazole compounds) are metallated with CoCl2·6H2O to afford tridentate SNS pincer cobalt(II) complexes. Preparation of the cobalt(II) model complexes for liver alcohol dehydrogenase is facile.

7-Chloro-3-(4-methyl-benzene-sulfon-yl)pyrrolo[1,2-]pyrimidine.

In the title compound, CHClNOS, the dihedral angle between the pyrrolo-[1,2-]pyrimidine ring system (r.m.s.

The synergistic co-operation of N-H...O=P hydrogen bonds and C-H...OX weak intermolecular interactions (X is =P or -C) in the (CHO)P(O)(NH-NHCF) amidophosphoester: a combined X-ray crystallographic and theoretical study.

The asymmetric unit of O,O'-dimethyl [(2,3,4,5,6-pentafluorophenyl)hydrazinyl]phosphonate, CHFNOP, is composed of two symmetry-independent molecules with significant differences in the orientations of the CF and OMe groups. In the crystal structure, a one-dimensional assembly is mediated from classical N-H..

Silver derivatives of multi-donor heterocyclic thioamides as antimicrobial/anticancer agents: unusual bio-activity against methicillin resistant , , and and human bone cancer cell line.

The basic aim of this study pertains to the synthesis of silver nitrate complexes and the study of their antimicrobial and anticancer bio-activity. A series of new silver(i) derivatives of -substituted-imidazolidine-2-thiones (L-NR, R = Et, Pr , Bu , Ph), purine-6-thione (purSH), 2-thiouracil (tucH), pyrimidine-2-thione (pymSH) and pyridine-2-thione (pySH) of composition [Ag(S-L-NR)(PPh)(ONO)] {R = Et (1), Pr (2), Bu (3), Ph (4)}, [Ag(N,S-purSH)(μ-dppm)](NO)·2HO (5) (dppm = PhP-CH-PPh), [Ag(L)(PPh)](NO) {L = N,S-purSH (6); S-tucH (7)}, [Ag(N,S-pymS)(PPh)](CHOH) (8), and [Ag(N,S-pyS)(PPh)] (9) have been synthesized and structurally characterized. These new and some previously reported complexes {[Ag(L-NH)(PPh)](NO) (10), [Ag(L-NMe)(PPh)](NO) (11), and [Ag(S-bzimSH)(PPh)](OAc) (12), L-NH = 1,3-imidazolidine-2-thione; L-NMe = 1-methyl-3-imidazolidine-2-thione and bzimSH = benzimidazoline-2-thione)} have shown moderate to high anti-microbial activity against Gram positive bacteria, namely methicillin resistant (MRSA) and (MTCC 740), and Gram negative bacteria, namely (MTCC 435), (MTCC 439), (MTCC 1457) and a yeast (MTCC 22).

Double 1,3-Dipolar Cycloadditions of Two Nonstabilized Azomethine Ylides for Polycyclic Pyrrolidines.

Nonstabilized azomethine ylides derived from decarboxylation of oxazolidin-5-ones were used for double 1,3-dipolar cycloadditions in diastereoselective synthesis of pyrrolidine-containing tetracyclic compounds. This is the first example of one-pot and five-component reactions involving two nonstabilized azomethine ylides. Only CO and water were generated as byproducts.