排序方式: 共有46条查询结果,搜索用时 31 毫秒
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Samaneh Zarei Golzar Komeili Saeed Bahadorikhalili Azadeh Yahya-Meymandi Morteza Karami-Zarandi Bagher Larijani Mahmood Biglar Seyed Esmaeil Sadat Ebrahimi Mohammad Mahdavi 《Journal of heterocyclic chemistry》2020,57(12):4254-4261
In this paper, a novel series of 2-(4-((1-aryl-1H-1,2,3-triazol-4-yl)methoxy)phenyl)2-(2-oxoazetidin-1-yl)acetamide derivatives are synthesized in two steps. The first step involved Ugi multicomponent reaction of β-alanine, o-(propargyl)benzaldehyde and isocyanide derivatives. The product of this step, underwent a click 1,3-dipolar cycloaddition reaction with benzyl azide derivatives. The 2-(4-((1-aryl-1H-1,2,3-triazol-4-yl)methoxy)phenyl)2-(2-oxoazetidin-1-yl)acetamide product was characterized and their antibacterial activities were evaluated against various G-positive (Staphylococcus aureus and Bacillus subtilis) and G-negative (Pseudomonas aeruginosa and Escherichia coli) bacteria, using minimal inhibition concentration. The compounds showed very good antimicrobial activity and a number of products have been more active than ciprofloxacin. 相似文献
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Hosseini Fahimeh Mohammadi-Khanaposhtani Maryam Azizian Homa Ramazani Ali Tehrani Maliheh Barazandeh Nadri Hamid Larijani Bagher Biglar Mahmoud Adibi Hossein Mahdavi Mohammad 《Structural chemistry》2020,31(3):999-1012
Structural Chemistry - A new series of 4-oxobenzo[d]1,2,3-triazin-pyridinium-phenylacetamide hybrids 8a–p was designed, synthesized, and screened as the potential cholinesterase inhibitors... 相似文献
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M. Ghoranneviss A. Shokouhy M. M. Larijani S. H. Haji Hosseini M. Yari A. Anvari M. Gholipur Shahraki A. H. Sari M. R. Hantehzadeh 《Pramana》2007,68(1):135-140
This work presents the results of a low-energy nitrogen ion implantation of AISI 304 type stainless steel (SS) at a moderate
temperature of about 500°C. The nitrogen ions are extracted from a Kauffman-type ion source at an energy of 30 keV, and ion
current density of 100 μA cm−2. Nitrogen ion concentration of 6 × 1017, 8 × 1017 and 1018 ions cm−2, were selected for our study. The X-ray diffraction results show the formation of CrN polycrystalline phase after nitrogen
bombardment and a change of crystallinity due to the change in nitrogen ion concentration. The secondary ion mass spectrometry
(SIMS) results show the formation of CrN phases too. Corrosion test has shown that corrosion resistance is enhanced by increasing
nitrogen ion concentration.
相似文献
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Abedinifar Fahimeh Babazadeh Rezaei Elham Biglar Mahmood Larijani Bagher Hamedifar Halleh Ansari Samira Mahdavi Mohammad 《Molecular diversity》2021,25(4):2571-2604
Molecular Diversity - Thiophene-based analogs have been fascinated by a growing number of scientists as a potential class of biologically active compounds. Furthermore, they play a vital role for... 相似文献
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Tashrifi Zahra Mohammadi-Khanaposhtani Mohammad Hamedifar Haleh Larijani Bagher Ansari Samira Mahdavi Mohammad 《Molecular diversity》2020,24(4):1385-1431
Molecular Diversity - 2-Amino-3-cyano-4H-chromenes are structural core motifs that received increasing attention in the last years due to their interesting potential pharmacological properties. In... 相似文献
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Mona Ghoorchibeigi Kambiz Larijani Parviz A. Azar Karim Zare Iraj Mehregan 《Journal of heterocyclic chemistry》2020,57(10):3612-3621
The preparation of pyrazolo pyrimidinone derivatives was performed by using five component reactions of phthalaldehyde, cyanomethylamine, electron deficient acetylenic compounds, isocyanate, hydrazine, and catalytic amounts of ZnO/Fe3O4-magnetic nanoparticles as a high performance catalyst under ultrasonic conditions at ambient temperature in aquause media at room temperature. It should be mentioned that this catalyst was prepared using Spinacia oleracea water extract. In addition, for investigation of antioxidant ability, radical trapping by DPPH and reducing power of ferric ion experiments was performed. As a result, synthesized compounds show excellent radical trapping by DPPH and good reducing ability of ferric ion. The current procedure has the benefits for instance excellent yield of reaction, green media, and easy separation of product and catalyst. 相似文献
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Zirconium oxide (ZrO2) films have been prepared by using ex situ thermal oxidation of sputtered Zr films on glass and silicon substrates. XRD patterns show that a highly monoclinic (111) preferential orientation of ZrO2 phase can be formed with increasing the oxidation temperature. According to XRD patterns in all thermal oxidized samples silicon oxide phase is present as interfacial layer at the Zr (ZrO2) / Si (glass) interface. In the case of silicon substrates, crystallite sizes obtained from ZrO2 peak with higher intensity reveal an increase with substrate temperature. AFM measurement shows on the whole a decrease of average surface roughness with oxidation temperature. The electrical property of the prepared films is investigated by means of four point probe measurement. An abrupt increase of sheet resistivity occurs when the crystallinity of ZrO2 phase enhances at higher temperature. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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Nasli Esfahani Anita Iraji Aida Alamir Amir Moradi Shahram Asgari Mohammad Sadegh Hosseini Samanesadat Mojtabavi Somayeh Nasli-Esfahani Ensieh Faramarzi Mohammad Ali Bandarian Fatemeh Larijani Bagher Hamedifar Haleh Hajimiri Mir Hamed Mahdavi Mohammad 《Molecular diversity》2022,26(4):1995-2009
Molecular Diversity - A novel series of phenoxymethybenzoimidazole derivatives (9a-n) were rationally designed, synthesized, and evaluated for their α-glycosidase inhibitory activity. All... 相似文献