Copper-catalyzed cyclopropanation reaction of but-2-ene.

abstract：:The feasibility of electron transport conduction through a guanine base of DNA was investigated and then compared with another component of DNA, i.e., cytosine. A mathematical approach based on the jellium model using non-equilibrium Green's function combined with semi empirical extended Huckel theory was applied usin...

journal_title：Journal of molecular modeling

authors： Vohra R,Sawhney RS

更新日期：2018-11-01 00:00:00

abstract：:Nowadays, scientists are trying to develop low-cost fullerene free acceptors for small organic photovoltaic cells in order to overcome the limitations of fullerene derivatives. Current research work deals with theoretical study on three non-fullerene acceptors based on indaceno, dithiophene core, and thiophene bridge ...

journal_title：Journal of molecular modeling

authors： Ajmal M,Ali U,Javed A,Tariq A,Arif Z,Iqbal J,Shoaib M,Ahmed T

更新日期：2019-09-11 00:00:00

abstract：:Dirithromycin is a macrolide antibiotic derived from erythromycin A. Dirithromycin is synthesized by the condensation of 9(S)-erythromycylamine with 2-(2-methoxyethoxy)-acetaldehyde. To gain insight into the synthesis, the condensation mechanism has been analyzed computationally by the AM1 method in the gas phase. Fir...

journal_title：Journal of molecular modeling

authors： Duran D,Aviyente V,Baysal C

更新日期：2004-04-01 00:00:00

abstract：:Density functional theory and its time-dependent extension (DFT, TDDFT) were employed to establish the feasibility of using a series of 4,4-difluoro-4-bora-3a,4a-diaza-s-indacenes (BODIPYs) in photodynamic therapy. Their absorption electronic spectra, singlet-triplet energy gaps, and spin-orbit matrix elements were co...

journal_title：Journal of molecular modeling

authors： Ponte F,Mazzone G,Russo N,Sicilia E

更新日期：2018-06-29 00:00:00

abstract：:Studying the electrochemical characteristics is an important step for determining interactions between molecules and the chemical environment. Moreover, the electrochemical evaluation of dyes is highly needed to establish the behavior of electro-active chemical species inside dye-sensitized solar cells (DSSCs). Four c...

journal_title：Journal of molecular modeling

authors： Ortega E,Bernède JC,Ramírez AMR,Louarn G,Díaz FR,Cattin L,Del Valle MA

更新日期：2019-02-27 00:00:00

abstract：:Although there are a multitude of aromaticity indexes, only a few have a widespread usage. All famous aromaticity indexes are limited: HOMA and FLU are reference-dependent; ELF is π-bond-dependent; PDI is structurally dependent and NICS is ring size dependent. These limitations stimulate the continuous search for bett...

journal_title：Journal of molecular modeling

authors： Firme CL,Araújo DM

更新日期：2017-09-01 00:00:00

abstract：:In this study, eight oxytocin (OT) antagonists were subjected to conformational analysis. By means of simulated annealing, 2,000 structures were generated to sample the conformational space. The preferred main-chain and side-chain dihedral angles, intramolecular H-bond interactions (types 1<--4 and 1<--3), and seconda...

journal_title：Journal of molecular modeling

authors： Jójárt B,Márki A

更新日期：2006-09-01 00:00:00

abstract：:The impact of a variety of modern computational methods on the structure of biologically relevant zinc complexes is studied. Different density functionals and a Hartree-Fock-based method, scalar-relativistic effects, and basis set integration grid choices, among others, are assessed for set of high-resolution crystall...

journal_title：Journal of molecular modeling

authors： Savasci G,Borges-Martínez M,Berger RJF,Ochsenfeld C,Mera-Adasme R

更新日期：2019-08-09 00:00:00

abstract：:Through comparison with ab initio reference data, we have evaluated the performance of various density functionals for describing pi-pi interactions as a function of the geometry between two stacked benzenes or benzene analogs, between two stacked DNA bases, and between two stacked Watson-Crick pairs. Our main purpose...

journal_title：Journal of molecular modeling

authors： Swart M,van der Wijst T,Fonseca Guerra C,Bickelhaupt FM

更新日期：2007-12-01 00:00:00

abstract：:Odorant binding proteins (OBPs) are important in insect olfactory recognition. These proteins bind specifically to insect semiochemicals and induce their seeking, mating, and alarm behaviors. Molecular docking and molecular dynamics simulations were performed to provide computational insight into the interaction mode ...

journal_title：Journal of molecular modeling

authors： Wang S,Sun Y,Du S,Qin Y,Duan H,Yang X

更新日期：2016-06-01 00:00:00

abstract：:Both [5]-circulene and [7]-circulene can be selected to design the molecular tweezers theoretically using the DFT method. Leaning on the cyclic polymerization mechanism, we obtain four new tweezer compounds. Theoretical results offer that tweezer compound (I) is additionally stable than other compounds because it has ...

journal_title：Journal of molecular modeling

authors： Issa AA,Obayes HR

更新日期：2020-09-29 00:00:00

abstract：:The aim of the present work entitled electronic structure of PVA-PEG-Y2O3 (54 atom) is to present a theoretical study based on the hybrid function of three parameters Lee-Yang-Parr B3LYP of the density functional theory "DFT" quantum mechanical approach together with LanL2DZ basis sets for optoelectronics applications...

journal_title：Journal of molecular modeling

authors： Ahmed H,Hashim A

更新日期：2020-07-20 00:00:00

abstract：:A 3D QSAR analysis has been performed on a series of 67 benzodiazepine analogues reported as gamma-secretase inhibitors using molecular field analysis (MFA), with G/PLS to predict steric and electrostatic molecular field interaction for the activity. The MFA study was carried out using a training set of 54 compounds. ...

journal_title：Journal of molecular modeling

authors： Sammi T,Silakari O,Ravikumar M

更新日期：2009-04-01 00:00:00

abstract：:In this work, the poly(ethylene oxide) bulk as one example has been iteratively heated and cooled back using MD simulations to examine the effects of thermal history on the resulting Tg. It is demonstrated that, after the system is equilibrated once at the high temperatures, the simulated Tg does not exhibit a systema...

journal_title：Journal of molecular modeling

authors： Wu C

更新日期：2017-08-22 00:00:00

abstract：:The prediction of the series of complexes [Au(3)Cl(3)M(2)] with M = Li, Na, K, Rb and Cs, has been achieved at the ab initio level of theory. All geometries were fully optimized at the MP2 level of theory; the central Au(3) cluster is capped by chlorine atoms and the alkaline metals lie above and below the plane of th...

journal_title：Journal of molecular modeling

authors： Muñiz J,Sansores LE,Pyykkö P,Martínez A,Salcedo R

更新日期：2009-10-01 00:00:00

abstract：:A quantum mechanical density functional theory (DFT) was successfully developed for the estimation of pKa values of chlorinated phenols in aqueous solution with a precision of 0.9 pKa units. The MP2/6-311++G(d,p)//B3LYP/6-31+G(d) level of theory was used for the gas phase calculation. For computation in the solution p...

journal_title：Journal of molecular modeling

authors： Kheirjou S,Imanzadeh G,Rezaei H,Safari N

更新日期：2019-06-26 00:00:00

abstract：:The p38-mitogen-activated protein kinases (p38-MAPKs) belong to a family of serine-threonine kinases activated by pro-inflammatory or stressful stimuli that are known to be involved in several diseases. Their biological importance, related to the release of inflammatory pro-cytokines such as tumor necrosis factor-alph...

journal_title：Journal of molecular modeling

authors： Romeiro NC,Albuquerque MG,de Alencastro RB,Ravi M,Hopfinger AJ

更新日期：2006-09-01 00:00:00

abstract：:Remarkable advances have been made in the drug therapy of tuberculosis. However much remains to be learned about the molecular and structural basis of drug resistance in Mycobacterium tuberculosis. It is known that, activation of Isoniazid (INH) is mediated by Mycobacterium tuberculosis catalase-peroxidase (MtBKatG) a...

journal_title：Journal of molecular modeling

authors： Purohit R,Rajendran V,Sethumadhavan R

更新日期：2011-04-01 00:00:00

abstract：:The equilibrium structures, spectroscopic and thermodynamic parameters [entropy (S), internal energy (E), heat capacity (C p)] of U₂, U₂O, U₂O₂ and U₂O₄ uranium oxide molecules were investigated systematically using density functional theory (DFT). Our computations indicated that the ground electronic state of U₂ is t...

journal_title：Journal of molecular modeling

authors： Li P,Niu WX,Gao T,Wang F,Jia TT,Meng DQ,Li G

更新日期：2013-12-01 00:00:00

abstract：:The heats of formation (HOFs), electronic structure, energetic properties, and thermal stabilities for a series of 1,4-bis(1-azo-2,4-dinitrobenzene)-iminotetrazole derivatives with different substituents and substitution positions and numbers of nitrogen atoms in the nitrobenzene rings were studied using the DFT-B3LYP...

journal_title：Journal of molecular modeling

authors： Wu Q,Pan Y,Zhu W,Xiao H

更新日期：2013-04-01 00:00:00

abstract：:Nitrogen (N)-doped carbons reportedly exhibit good electrocatalytic activity for the oxygen reduction reaction (ORR) of fuel cells. This work provides theoretical insights into the ORR mechanism of N-doped graphene by using density functional theory calculations. All possible reaction pathways were investigated, and t...

journal_title：Journal of molecular modeling

authors： Zhang J,Wang Z,Zhu Z

更新日期：2013-12-01 00:00:00

abstract：:Extremely extensive calculations of potential energy surfaces for the parallel-displaced configuration of pyridine dimer systems have been carried out using a dispersion-corrected density functional. Instead of focusing on stationary geometries these calculations provide much deeper insight into the "landscape" of the...

journal_title：Journal of molecular modeling

authors： Sierański T

更新日期：2017-11-09 00:00:00

abstract：:Molecular and quantum mechanics calculations were carried out in a series of tripeptides (GXG, where X = D, N and C) as models of the unfolded states of proteins. The selected central amino acids, especially aspartic acid (D) and asparagine (N) are known to present significant average conformations in partially allowe...

journal_title：Journal of molecular modeling

authors： Ramos J,Cruz VL

更新日期：2016-11-01 00:00:00

abstract：:Tuberculosis still remains one of the most deadly infectious diseases. The emergence of drug resistant strains has fuelled the quest for novel drugs and drug targets for its successful treatment. Thymidine monophosphate kinase (TMPK) lies at the point where the salvage and de novo synthetic pathways meet in nucleotide...

journal_title：Journal of molecular modeling

authors： Kumar M,Sharma S,Srinivasan A,Singh TP,Kaur P

更新日期：2011-05-01 00:00:00

abstract：:The increase of multidrug-resistant strains of bacteria to known classes of antibiotics present a severe challenge for modern medicine. The most promising strategy to combat pathogenic bacteria is to discover new drug targets. In this regard, aminoacyl-tRNA synthetases are particularly well suited to develop novel dru...

journal_title：Journal of molecular modeling

authors： Hoffmann M,Torchala M

更新日期：2009-06-01 00:00:00

abstract：:In this paper, we assessed the quantum mechanical level of theory for prediction of linear and nonlinear optical (NLO) properties of push-pull organic molecules. The electric dipole moment (μ), mean polarizability ([Symbol: see text]α[Symbol: see text]) and total static first hyperpolarizability (βt) were calculated f...

journal_title：Journal of molecular modeling

authors： Paschoal D,Santos HF

更新日期：2013-05-01 00:00:00

abstract：:Molecular modeling of the La(III) complex of 3,3'-(benzylidene)bis(4-hydroxycoumarin) (PhDC) was performed using density functional theory (DFT) methods at B3LYP/6-31G(d) and BP86/TZP levels. Both Stuttgart-Dresden effective core potential and ZORA approximation were applied to the La(III) center. The electron density...

journal_title：Journal of molecular modeling

authors： Mihaylov T,Trendafilova N,Georgieva I

更新日期：2008-05-01 00:00:00

abstract：:To improve understanding of the unimolecular decomposition mechanism of 1,2,4-butanetriol trinitrate (BTTN) in the gas phase, density functional theory calculations were performed to determine various decomposition pathways at the B3LYP/6-311G** level. Two main mechanisms for the unimolecular decomposition of BTTN wer...

journal_title：Journal of molecular modeling

authors： Zhu W,Yan Q,Pang A,Chi X,Du X,Xiao H

更新日期：2014-02-01 00:00:00

abstract：:Cyclic nucleotide binding domain (CNBD) is a ubiquitous domain of effector proteins involved in signalling cascades of prokaryota and eukaryota. CNBD activation by cyclic nucleotide monophosphate (cNMP) is studied well in the case of several proteins. However, this knowledge is hardly applicable to cNMP-modulated cati...

journal_title：Journal of molecular modeling

authors： Gushchin IY,Gordeliy VI,Grudinin S

更新日期：2012-09-01 00:00:00

abstract：:The title compound, C(6)H(4)N(4)S(2)·C(3)H(7)NO, crystallizes in the monoclinic space group C 2/c with a = 26.673(5), b = 5.397(1), c = 16.522(3) Å, β = 95.49(3)°, Z = 8, R = 0.0461 for 1891 reflections with I > 2σ(I) and 174 parameters (4 restraints). Single pteridine-2,4(1 H,3 H)-dithione and dimethylformamide molec...

journal_title：Journal of molecular modeling

authors： Illán-Cabeza NA,Peña-Ruiz T,Moreno-Carretero MN

更新日期：2012-02-01 00:00:00