Search results for: Parviz Rashidi-Ranjbar

Items from 1 to 20 out of 24 results

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Ugi four‐multicomponent reaction based synthesis, in vitro, and in silico enzymatic evaluations of new pyrazino[1,2‐a]indole‐1,4‐dione‐indole‐2‐phenylacetamides as potent inhibitors against α‐glucosidase and α‐amylase

Fatemeh Ahmadi Shourkaei, Parviz Rashidi Ranjbar, Parham Taslimi, Mohammad Mahdavi

Chemistry & Biodiversity > 21 > 2 > n/a - n/a

In this work, synthesis and evaluation of pyrazino[1,2‐a]indole‐1,4‐dione‐indole‐2‐phenylacetamides 6 a–k as new synthetic anti‐diabetes agents were presented. These compounds were synthesized by a four‐component Ugi reaction without metal catalyst. All synthesized compounds were evaluated against α‐glucosidase and α‐amylase as two important targets in the treatment of diabetes. Approximately, all...

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Computational studies on the conformational preference of N‐(Thiazol‐2‐yl) benzamide

Afsaneh Zonouzi, Ali Kakeshpour, Parviz Rashidi Ranjbar, Ashraf Moradi

Journal of the Chinese Chemical Society > 67 > 10 > 1800 - 1806

N‐(Thiazol‐2‐yl) benzamide 1 substructures are found in some of bioactive compounds. In some of protein/ligand co‐crystals, the 1 moiety adopts a conformer in which the amide O and the thiazole S atoms are close. In fact, in the crystalline structure of 1, the O—S distance is even shorter than Van der Waals radius. Although the natural bond orbital analysis finds a weak stabilizing interaction between...

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Synthesis of Arylidene – Isoquinolinones bearing Combretastatin Skeleton by Cyclocarbopalladation/cross coupling Tandem Heck‐Suzuki Miaura Reactions using nano catalyst Pd@Py‐IL‐SPION

Mohammad Sadegh Asgari, Parviz Rashidi Ranjbar, Rahmatollah Rahimi, Mohammad Mahdavi

Applied Organometallic Chemistry > 34 > 2 > n/a - n/a

Cyclocarbopalladation/cross‐coupling cascade intramolecular Heck–Suzuki–Miyaura reactions is applied for the first time by palladium immobilized on pyridine‐imidazolium ionic liquid supported magnetic iron oxide nanoparticle catalyst (denoted Pd@Py‐IL‐SPION) for the last step to synthesize trisubstituted arylidene–isoquinolinones derivatives having Combretastatin skeleton. The reaction is performed...

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Amine‐carbon disulfide promoted synthesis of novel benzo[e][1,3]thiazepin‐5(1H)‐one derivatives

Mohammad Sadegh Asgari, Saeed Bahadorikhalili, Mehdi Asadi, Parviz Rashidi Ranjbar, more

Journal of Heterocyclic Chemistry > 57 > 1 > 413 - 418

In this paper, a simple method is introduced for the synthesis of novel 4‐substituted‐3‐thioxo‐3,4‐dihydrobenzo[e][1,3]thiazepin‐5(1H)‐one derivatives. The synthesis is based on a two‐step reaction of 2‐methylbenzoic acid, an amine, and carbon disulfide. In the first step, 2‐methylbenzoic acid reacts with sulfuric acid in ethanol, followed by the reaction with N‐bromosuccinimide to produce ethyl 2‐(bromomethyl)benzoate...

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DABCO‐modified super‐paramagnetic nanoparticles as an efficient and water‐compatible catalyst for the synthesis of pyrano[3,2‐c:5,6‐c']dichromene‐6,8‐dione derivatives under mild reaction conditions

Zahra Heydari, Saeed Bahadorikhalili, Parviz Rashidi Ranjbar, Mohammad Mahdavi

Applied Organometallic Chemistry > 32 > 12 > n/a - n/a

In this paper, a novel catalyst is introduced based on the immobilization of 1,4‐diazabicyclo[2.2.2] octane (DABCO) on super‐paramagnetic iron oxide nanoparticles. For the synthesis of the catalyst, silica‐magnetic iron oxide core‐shell nanoparticles were first functionalized by (3‐chloropropyl)trimethoxysilane. The functionalized silica‐magnetic iron oxide core‐shell nanoparticles then reacted with...

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Novel quinazolin‐4(3H)‐one linked to 1,2,3‐triazoles: Synthesis and anticancer activity

Maliheh Safavi, Arsalan Ashtari, Faezeh Khalili, Seyedeh Sara Mirfazli, more

Chemical Biology & Drug Design > 92 > 1 > 1373 - 1381

In this work, a wide range of novel quinazolin‐4(3H)‐one linked to 1,2,3‐triazoles was designed, synthesized, and evaluated against a panel of three human breast (MDA‐MB‐231, MCF‐7, T‐47D), lung (A549), and prostate (PC3) cancer cell lines. Our results revealed that the anticancer activity of the synthesized compounds was selectively affected by the presence of methoxy group on the linker between...

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Cover Image

Saeed Bahadorikhalili, Arsalan Ashtari, Leila Ma’mani, Parviz Rashidi Ranjbar, more

Applied Organometallic Chemistry > 32 > 4 > n/a - n/a

The cover image, by Saeed Bahadorikhalili et al., is based on the Full Paper Copper‐supported β‐cyclodextrin‐functionalized magnetic nanoparticles: Efficient multifunctional catalyst for one‐pot ‘green’ synthesis of 1,2,3‐triazolylquinazolinone derivatives, DOI: 10.1002/aoc.4212.

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Copper‐supported β‐cyclodextrin‐functionalized magnetic nanoparticles: Efficient multifunctional catalyst for one‐pot ‘green’ synthesis of 1,2,3‐triazolylquinazolinone derivatives

Saeed Bahadorikhalili, Arsalan Ashtari, Leila Ma’mani, Parviz Rashidi Ranjbar, more

Applied Organometallic Chemistry > 32 > 4 > n/a - n/a

The green synthesis of 2‐(4‐((1‐phenyl‐1H‐1,2,3‐triazol‐4‐yl)oxy)phenyl)quinazolin‐4(3H)‐one derivatives is reported. The catalyst for this synthesis is copper‐supported β‐cyclodextrin‐functionalized magnetic silica–iron oxide nanoparticles ([Cu@BCD@SiO₂@SPION]). [Cu@BCD@SiO₂@SPION] simultaneously catalyses ‘click’ reaction, oxidation of CN bond and multicomponent reaction. The desired 1,2,3‐triazolylquinazolinone...

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The high selectivity of Ce-hierarchical SAPO-34 nanocatalyst for the methanol to propylene conversion process

Masoumeh Ghalbi-Ahangari, Parviz Rashidi Ranjbar, Alimorad Rashidi, Mohammad Teymuri

Reaction Kinetics, Mechanisms and Catalysis > 2017 > 122 > 2 > 1265-1279

Cerium-hierarchical SAPO-34 zeolite, synthesized hydrothermally in the presence of n-propyl amine as a mesoscale template and pore size modifier, is used for the methanol to propylene (MTP) conversion. A high selectivity for propylene (52.5%) compared to a conventional microporous SAPO-34 catalyst (28.7%) in a fixed-bed reactor under atmospheric pressure at 450 °C and WHSV of 1.0 h⁻¹ is achieved....

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An efficient four-component reaction for the synthesis of chromeno[4,3-b]quinolone derivatives

Azadeh Yahya-Meymandi, Hamideh Nikookar, Setareh Moghimi, Mohammad Mahdavi, more

Journal of the Iranian Chemical Society > 2017 > 14 > 4 > 771-775

Chromenoquinolines have been prepared via an efficient one-pot, multi-component reaction of 4-hydroxy coumarin, aqueous ammonia, dimedone and different aldehydes.

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A New Derivative of Core–Shell Magnetic Chitosan Biopolymer: Synthesis, Characterization and Application for Adsorption of Lead and Copper Ions

Mostafa Hossein Beyki, Simin Miri, Farzaneh Shemirani, Mehrnoosh Bayat, more

CLEAN – Soil, Air, Water > 44 > 6 > 710 - 719

In this research, a new derivative of core–shell magnetic chitosan biopolymer was prepared. The core magnetic Fe₃O₄ nanoparticles were synthesized by a simple and fast sonochemistry route within 10 min. Fe³⁺ ions and sodium thiosulfate were used as the iron source and reducing agent, respectively. Then shell chitosan grafted with 5‐acrylamido‐1,10‐phenanthroline was cross‐linked to the magnetic core...

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A theoretical survey on the D7d [84]fullerene, a fullerene with two heptagon rings

Zahra Badri, Cina Foroutan-Nejad, Parviz Rashidi-Ranjbar

Computational and Theoretical Chemistry > 2013 > 1009 > Complete > 103-107

Our theoretical studies suggest that a novel isomer of [84]fullerenes with D _7d point group symmetry is kinetically stable. This novel structure contains two heptagons, 28 hexagons and 14 pentagons. Studying the electronic properties shows that the molecule has a Singlet ground state and the Singlet–Triplet energy gap is about 31.0kcalmol ⁻¹ . In addition, the HOMO–LUMO energy gap...

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A green one-pot synthesis of N-alkyl-2-(2-oxoazepan-1-yl)-2-arylacetamide derivatives via an Ugi four-center, three-component reaction in water

Mohammad Ali Rasouli, Mohammad Mahdavi, Parviz Rashidi Ranjbar, Mina Saeedi, more

Tetrahedron Letters > 2012 > 53 > 52 > 7088-7092

This work describes a green and efficient one-pot synthesis of N-alkyl-2-(2-oxoazepan-1-yl)-2-arylacetamide derivatives via an Ugi four-center, three-component reaction of 6-aminohexanoic acid, aromatic aldehydes, and isocyanide derivatives in water under reflux conditions in the absence of a catalyst.

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The Laplacian of Electron Density versus NICS _zz Scan: Measuring Magnetic Aromaticity among Molecules with Different Atom Types

Cina Foroutan-Nejad, Zahra Badri, Shant Shahbazian, Parviz Rashidi-Ranjbar

The Journal of Physical Chemistry A > 2011 > 115 > 45 > 12708 - 12714

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A dissected ring current model for assessing magnetic aromaticity: A general approach for both organic and inorganic rings

Cina Foroutan‐Nejad, Shant Shahbazian, Ferran Feixas, Parviz Rashidi‐Ranjbar, more

Journal of Computational Chemistry > 32 > 11 > 2422 - 2431

A model based on classical electrodynamics is used to measure the strength of ring currents of different molecular orbitals, i.e., σ‐ and π‐orbitals, and characteristics of ring current loops, i.e., ring current radii and height of current loops above/below the ring planes, among a number of organic as well as inorganic molecules. For the π‐current, the present model represents an improvement of previous...

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Easy‐to‐Execute Carbonylative Arylation of Aryl Halides using Molybdenum Hexacarbonyl: Efficient Synthesis of Unsymmetrical Diaryl Ketones

Farnaz Jafarpour, Parviz. Rashidi‐Ranjbar, Asieh Otaredi Kashani

European Journal of Organic Chemistry > 2011 > 11 > 2128 - 2132

A versatile procedure for the synthesis of unsymmetrical diaryl ketones through a palladium‐catalyzed carbonylative arylation of iodoarenes through easy‐to‐handle molybdenum hexacarbonyl as a condensed source of carbon monoxide is described. This method provides an efficient route to a wide variety of substituted diaryl ketones without direct use of high‐pressure carbon monoxide.

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Design, modeling and synthesis of molecular tweezers with self-assembly properties

Mohsen Ghodratbeigi, Parviz Rashidi-Ranjbar, Alireza Abbasi

Journal of Molecular Structure > 2011 > 990 > 1-3 > 140-151

Development of molecular tweezers depends on the design and synthesis of reliable spacers. Two new classes of spacers based on functionalized dibenzo[a,j]xanthene are described. Molecular tweezers 4, 5 and 6 with adjustable cavity are designed and synthesized. Single crystal X-ray diffraction shows self-assembly and recognition of 4 in the solid state; with the π-stacking, CH/O and CH/π interactions...

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The marked difference in conformational behavior of the two diastereomers of 7-substituted-1,1-dichloro-7b-((Z)-8-chloro-6,7-dihydro-5H-benzo[7]annulen-9-yl)-1a,2,3,7b-tetrahydro-1H-cyclopropa[a]naphthalene, single crystal X-ray, 1H NMR and AM1 studies

Hamid Roshan, Parviz Rashidi-Ranjbar

Journal of Molecular Structure > 2010 > 980 > 1-3 > 59-65

The 7-substituted of 1 and 2 were synthesized and conformational analysis carried out. While 7-substituted of 2 show two conformers in solution, 7-substituted of 1 show only one form in solution. AM1 semi-empirical molecular orbital calculations show that the conformation of cycloheptadiene ring in 1 and 2 is a twist boat form. In this conformation, the C-7 substituents can be oriented in pseudo equatorial...

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Chemical bonding in the lightest tri-atomic clusters; H3+, Li3+ and B3−

Cina Foroutan-Nejad, Parviz Rashidi-Ranjbar

Journal of Molecular Structure: THEOCHEM > 2009 > 901 > 1-3 > 243-248

Detailed topological charge density analysis and the Quantum Theory of Atoms in Molecules (QTAIM) calculations has been performed on equilibrium geometries of the three lightest tri-atomic clusters; H ₃ ⁺ , Li ₃ ⁺ and B ₃ ⁻ . Characteristics of critical points of charge density, the effects of occupied molecular orbitals on topology of charge density, the stability...

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Application of quantum theory of atoms in molecules on small single wall (6,0) zigzag carbon clusters. Part I: Topological analysis of electron density, structure and bonding

Parviz Rashidi-Ranjbar, Abdolreza Sadjadi, Gholam Hossein Shafiee, Cina Foroutan-Nejad

Journal of Molecular Structure: THEOCHEM > 2008 > 856 > 1-3 > 79-87

The Rho(r) functions of (6,0) ₂ , (6,0) ₃ and (6,0) ₄ zigzag single wall carbon clusters, SWCCs, were analyzed by quantum theory of atoms in molecules (QTAIM). Topological analysis of Rho(r) revealed the chemical bonds’ nature and structure of cited species. It is found that molecular graph and classical frame derived from interatomic distances of clusters are in agreement...

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INFONA - science communication portal

Search results for: Parviz Rashidi-Ranjbar

Ugi four‐multicomponent reaction based synthesis, in vitro, and in silico enzymatic evaluations of new pyrazino[1,2‐a]indole‐1,4‐dione‐indole‐2‐phenylacetamides as potent inhibitors against α‐glucosidase and α‐amylase

Computational studies on the conformational preference of N‐(Thiazol‐2‐yl) benzamide

Synthesis of Arylidene – Isoquinolinones bearing Combretastatin Skeleton by Cyclocarbopalladation/cross coupling Tandem Heck‐Suzuki Miaura Reactions using nano catalyst Pd@Py‐IL‐SPION

Amine‐carbon disulfide promoted synthesis of novel benzo[e][1,3]thiazepin‐5(1H)‐one derivatives

DABCO‐modified super‐paramagnetic nanoparticles as an efficient and water‐compatible catalyst for the synthesis of pyrano[3,2‐c:5,6‐c']dichromene‐6,8‐dione derivatives under mild reaction conditions

Novel quinazolin‐4(3H)‐one linked to 1,2,3‐triazoles: Synthesis and anticancer activity

Cover Image

Copper‐supported β‐cyclodextrin‐functionalized magnetic nanoparticles: Efficient multifunctional catalyst for one‐pot ‘green’ synthesis of 1,2,3‐triazolylquinazolinone derivatives

The high selectivity of Ce-hierarchical SAPO-34 nanocatalyst for the methanol to propylene conversion process

An efficient four-component reaction for the synthesis of chromeno[4,3-b]quinolone derivatives

A New Derivative of Core–Shell Magnetic Chitosan Biopolymer: Synthesis, Characterization and Application for Adsorption of Lead and Copper Ions

A theoretical survey on the D7d [84]fullerene, a fullerene with two heptagon rings

A green one-pot synthesis of N-alkyl-2-(2-oxoazepan-1-yl)-2-arylacetamide derivatives via an Ugi four-center, three-component reaction in water

The Laplacian of Electron Density versus NICS _zz Scan: Measuring Magnetic Aromaticity among Molecules with Different Atom Types

A dissected ring current model for assessing magnetic aromaticity: A general approach for both organic and inorganic rings

Easy‐to‐Execute Carbonylative Arylation of Aryl Halides using Molybdenum Hexacarbonyl: Efficient Synthesis of Unsymmetrical Diaryl Ketones

Design, modeling and synthesis of molecular tweezers with self-assembly properties

The marked difference in conformational behavior of the two diastereomers of 7-substituted-1,1-dichloro-7b-((Z)-8-chloro-6,7-dihydro-5H-benzo[7]annulen-9-yl)-1a,2,3,7b-tetrahydro-1H-cyclopropa[a]naphthalene, single crystal X-ray, 1H NMR and AM1 studies

Chemical bonding in the lightest tri-atomic clusters; H3+, Li3+ and B3−

Application of quantum theory of atoms in molecules on small single wall (6,0) zigzag carbon clusters. Part I: Topological analysis of electron density, structure and bonding

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