نتایج جستجو برای: 13cnmr
تعداد نتایج: 221 فیلتر نتایج به سال:
In this study, a class of bis-1,2-(4-aryl-2-alkyl-1H- inden-1-yl) ethane was synthesized and characterized by spectroscopic methods such as 1HNMR, 13CNMR, melting point and FTIR. bis-1,2-(4-aryl-2-alkyl-1H- inden-1-yl) ethane was synthesized by the reaction of butyllithium, arylindenes and dibromoethane in a facile, one-pot strategy. It’s shown that these methods have a wide scope to afford li...
Background: The largest infectious agent-related cause of death and the most common disease with a high contagiousness profile is tuberculosis. For treatment tuberculosis, various benzimidazole quinazoline compounds have been developed in past effectiveness. In this example, our goal was to synthesise new enhanced activity by combining moieties quinazoline. present study planned synthesize nove...
This work describes the synthesis of novel ligand (H2L2) (4-((2-hydroxy-5-nitrophenyl)imino)methyl)-5(hydroxymethyl)-2methylpyridin-3-ol) type (NOO) donor atoms. When it coordinates with metal ions[V2+, Fe2+,Co2+ and Pt4+] general formula K2[M(L2)2].XH2O K2[VO(L2)(OSO3)].H2O . can form tridentate structures. The was synthesized from reaction pyridoxal hydrochloride 2-amino-4-nitrophenol in etha...
The potential of marine crabs as a source of biologically active products is largely unexplored. In the present study, antimicrobial activity of the hemolymph (plasma) and hemocytes (plasma cells) of six brachyuran crabs was investigated against 16 pathogenic strains. Among the 16 strains tested maximum zone of inhibition was recorded in the hemolymph of Hyas araneus against Shigella flexineri....
The crosslinked chitosans synthesized by the homogeneous reaction of chitosan in aqueous acetic acid solution with epichlorohydrin were used to investigate the adsorptions of three metals of Cu(II), Zn(II), and Pb(II) ions in an aqueous solution. The crosslinked chitosan characterized by 13CNMR, SEM, and elemental analysis, and the effects of pH and anion on the adsorption capacity were carried...
Celecoxib is classified as none traditional nonsteroidal anti-inflammatory drugs (NSAIDs). This compound has conventional properties of NSAIDs such as anti-inflammatory, analgesic, and antipyretic activities beside reduced risk of gastrointestinal side effect of traditional NSAIDs such as ibuprofen. This compound gets a second sale rank of NSAIDs market at 2016 in the world and sales more than ...
The study was undertaken to develop a simplified procedure for the isolation of bioactive isoflavone from Iris kashmiriana, using a direct method of isolation, avoiding the use of chromatographic techniques. The compound was isolated by commercially viable procedure. The extraction of powdered drug (500 g) was done with petroleum ether (60-80) using a Soxhlet apparatus (24 h run). The petroleum...
در این پژوهش، هستههای متقارن چند دندانهای جدید شامل ترکیب تترابرم، تتراآزید و تتراآمین با استفاده از یک مسیر سنتزی 5 مرحلهای که در آن از دی اتیل مالونات به عنوان واکنشگر استفاده شده، سنتز شده است. فراوردههای نهایی و حد واسط با استفاده از فنهای1HNMR ،13CNMR ،FT-IR و همچنین تجزیه عنصری تعیین ساختار شدهاند ترکیبهای چند دندانهای تهیهشده میتوانند به عنوان مواد پایه در تهیه درختپارها، پلیم...
در این پژوهش از مشتقات سولفونامیدی کالیکس آرنها بهعنوان میزبانهای مولکولی کارامد استفاده شده است. ابتدا واکنش کلروسولفوناسیون بر روی پارا ترشیو بوتیل کالیکس[4]آرن انجام شد و پس از آن فراورده بهدست آمده با پارا آمینو فنیل آزو بنزن وارد واکنش شدند و مشتق آزا-سولفونامید-کالیکس آرن تهیه شد. این ترکیب بهوسیله روشهای طیف سنجی زیرقرمز، 1HNMR ، 13CNMR و TOF-MASS مورد بررسی و شناسایی قرار گرفت. نت...
A facile and one-pot multicomponent synthesis of novel 1,4-disubstituted-1H-1,2,3-triazoles from alkenes at room temperature is reported. At the first step, in the presence of I2/NaN3 reagents, various alkenes were converted to the corresponding azido iodides and in the next step, the reaction of these compounds with phenylacetylene in the presence of catalytic amount of sodium ascorbate/ CuSO4...
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