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Morpholine Catalyzed One-pot Multicomponent Synthesis of Compounds Containing Chromene Core in Water

Chinese Journal of Chemistry 2011年第6期29卷 1163-1166页

作者： Heravi, Majid M. Zakeri, Masoumeh mohammadi, narges Department of Chemistry School of Sciences Alzahra University Vanak Tehran Iran Young Researchers Club Islamic Azad University North Tehran Branch Tehran Iran

A series of dihydropyrano[c]chromene was obtained via condensation of aldehyde, malononitrile and 4-hydroxycoumarin in water catalyzed by morpholine, as a one-pot reaction. The significance of our findings relates to reducing the use of organic solvents, potentially toxic and hazardous materials, as well as its simplicity, good yields, mild conditions, and lower costs.

关键词： organocatalysis dihydropyrano[c]chromene morpholine multicomponent

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Guanidine hydrochloride:An active and simple catalyst for Mannich type reaction in solvent-free condition

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Chinese Chemical Letters 2011年第7期22卷 797-800页

作者： Majid M.Heravi Masoumeh Zakeri narges mohammadi Department of Chemistry School of SciencesAlzahra UniversityVanakTehranIran Young Researchers Club Islamic Azad UniversityNorth Tehran BranchTehranIran

Commercially available guanidine hydrochloride （GuHC1） has been found to be a highly efficient catalyst for the Mannich reaction. β-Amino carbonyl compounds were obtained in reasonable yields when the Mannich react... 详细信息

关键词： Mannich reaction Guanidine hydrochloride β-Amino-ketones

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Synthesis and Characterization of Various Protein <i>α</i>-Lactalbumin Nanotubes Structures by Chemical Hydrolysis Method

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Advances in Nanoparticles 2013年第2期2卷 154-164页

作者： Pegah Esmaeilzadeh Zahra Fakhroueian Pouriya Esmaeilzadeh narges mohammadi Biomedical Material Department Institute of Pharmacy Martin Luther University Halle-Wittenberg Germany College of Chemical Engineering University of Tehran Tehran Iran Department of Chemistry College of Science Alzahra University Tehran. Iran Process simulation and control Lab. Chemical Engineering Collage Iran University of Science and Technology (IUST) Tehran Iran

New water-based nanofluids including unparalleled milk protein α-lactalbumin hollow nano-bio-tubes using low cost, available and advanced partial chemical hydrolysis strategy in bottom-up nano-assembly have been employed in this work. The aqueous sol-gel chemistry in nanotechnology which we selected for this goal offers new fabrication as interesting smart protein nanotubes. The kinds of nanometer sized tubular structures such as waved, helically coiled, bent, bamboo-shaped, bead-like and branched single-walled protein nanotubes (SWPNTs) with a range of 3 - 8 nm in outer diameters were produced by this method. Complete characterization for natural produced nanotubes including SEM, TEM images, G bond and D bond in Raman spectroscopy, XRD patterns, DLS (Dynamic Light Scattering) and FTIR analysis were evaluated which they are most significant experiments in synthesized protein nanotubes soluble in clear water nanofluids and stabilization of transparent nanofluids was proved within more than one year after preparation. Various necessary ligand ion salts such as Mn2+, Zn2+ and Ca2+ or mixtures as bridge makers and producing biological self-assembly hollow SWPNTs were performed and we focused on new chemical technology under specific acidic hydrolysis method not conventional enzymatic proteolysis and applying surfactants, pH reagent, Tris-HCl buffer, polar solvent which could be produced by β-sheet stacked hydrolysed protein α-lactalbumin mechanism under appropriate conditions to achieving high efficiency new protein nanotubes skeleton. They can be promising materials applied in food science, diet nutrition, nanomedicine, nano-biotechnology and surgery.

关键词： Nanobiotechnology Milk Protein Nanotubes Helical Self-Assembly Water-Based Nanofluids Chemical Hydrolysis Nanomedicine

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Chemical identification,antioxidant,cholinesterase inhibitory,and cytotoxic properties of fucoidan extracted from Persian Gulf Sargassumangustifolium

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Acta Oceanologica Sinica 2022年第12期41卷 133-141页

作者： Arghavan Hosseinpouri Mehdi mohammadi Elham Ehsandoost Paria Sharafi-Badr narges Obeidi Department of Cellular and Molecular Sciences Faculty of SciencesPersian Gulf UniversityBushehr 75168Iran Department of Marine Biotechnology Persian Gulf InstitutePersian Gulf UniversityBushehr 75168Iran Department of Biotechnology Persian Gulf Algae Development TechnologyDelvar Industrial Zone No.55Bushehr 75168Iran Department of Food Science and Technology Shiraz UniversityShiraz 71441-65186Iran Department of Pharmacognosy and Pharmaceutical Biotechnology School of PharmacyIran University of Medical SciencesTehran 14496-14535Iran Department of Hematology Faculty of ParamedicineBushehr University of Medical SciencesBushehr 75146-33341Iran

Marine macroalgal sulfated fucose-containing polysaccharides,like fucoidan,have drawn significant attention due to their biotechnological potentials,such as anti-cancer,antioxidant,and anti-cholinesterase *** fucoidan derived from brown macroalgae Sargassum angustifolium species(FSA)was investigated for its cytotoxic effects and alterations in cell proliferation,and cell cycle-related gene expression in the present study occurred on NB4 cell *** results showed that FSA would induce p53,p21,pro-apoptotic genes and increase expression of the p15 gene as a cell arrest ***,FSA inhibited the anti-apoptotic effect of the Bcl-2 gene and decreased dnmt-1 gene *** significantly exhibited potent 2,2-diphenyl-1-picrylhydrazyl(DPPH)radical scavenging activity(p<0.05)with an IC_(50) value of 0.157 mg/mL and showed moderate anti-acetylcholinesterase activity with an IC_(50) value of 1.20μg/*** results indicated the potential of FSA for the development of therapeutic or preventive agents of cancer and Alzheimer’s disease mainly through cytotoxic effect and AChE(acetylcholinesterase)inhibition as well as additional antioxidant capacities.

关键词： fucoidan Sargassum angustifolium cytotoxicity antioxidant anti-cholinesterase

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