Showing 101 - 120 results of 159 for search '"NMR spectroscopy"', query time: 0.05s Refine Results
  1. 101

    Anthoteibinenes F–Q: New Sesquiterpenes from the Irish Deep-Sea Coral <i>Anthothela grandiflora</i> by Stine S. H. Olsen, Sam Afoullouss, Ezequiel Cruz Rosa, Ryan M. Young, Mark Johnson, A. Louise Allcock, Bill. J. Baker

    Published 2025-01-01
    “…One-/two-dimensional NMR spectroscopy and high-resolution mass spectrometry were used for structure elucidation, while a combination of NOESY NMR experiments, GIAO NMR calculations coupled with DP4+ probabilities measures, and ECD comparisons were incorporated to propose relative and absolute configurations of the anthoteibinenes. …”
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  2. 102

    Incorporation of Capecitabine Into Extended Chain of N-Acylated Chitosan Carrier by Anita Marlina, Misni Misran, Witta Kartika Restu

    Published 2024-01-01
    “…The structure of acylated chitosan was analyzed using FTIR and 1H-NMR spectroscopy. The degree of substitution (DS) varied between 56% and 69% for different long-chain N-acylated chitosan, with N-stearoyl chitosan (ChC18) exhibiting the highest DS. …”
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  3. 103

    Protein structure and interactions elucidated with in-cell NMR for different cell cycle phases and in 3D human tissue models by Jan Rynes, Eva Istvankova, Michaela Dzurov Krafcikova, Enrico Luchinat, Letizia Barbieri, Lucia Banci, Kristyna Kamarytova, Tomas Loja, Bohumil Fafilek, Gustavo Rico-Llanos, Pavel Krejci, Libor Macurek, Silvie Foldynova-Trantirkova, Lukas Trantirek

    Published 2025-02-01
    “…Among these tools, in-cell NMR spectroscopy has been the sole technique for characterizing proteins in the intracellular space of living cells at atomic resolution and physiological temperature. …”
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  4. 104

    Integrated analysis of cellulose structure and properties using solid-state low-field H-NMR and photoacoustic spectroscopy by Levente Csóka, Worakan Csoka, Ella Tirronen, Ekaterina Nikolskaya, Yrjö Hiltunen, Bunsho Ohtani

    Published 2025-01-01
    “…Solid-state low-field H-NMR spectroscopy aids in characterizing the crystallinity degrees and amorphous regions within cellulose, revealing time-dependent changes in free induction decay (FID) signals. …”
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  5. 105

    Synthesis and crystal structures of palladium complexes based on $\alpha $-amino-oximes derived from ($R$)-limonene and their application in allylic alkylation of 1,3-dioxo compoun... by Homrani, Yasmina, El Amrani, Mohamed Amin, Loxq, Pauline, Capet, Frédéric, Suisse, Isabelle, Sauthier, Mathieu

    Published 2022-04-01
    “…Structures of the new palladium complexes are characterized and described by NMR spectroscopy and X-rays. These $\alpha $-amino-oxime ligands were then evaluated in the palladium-catalysed allylation of 1,3-dioxo compounds.…”
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  6. 106

    Influence of Drying–Wetting Cycles on the Water Retention and Microstructure of Residual Soil by Xu-tang Xu, Dao-qi Liu, Zhen-xing Xian, Feng Yang, Wen-bin Jian, Xiang Xu, Jian-bin Huang

    Published 2022-01-01
    “…The pressure plate test and nuclear magnetic resonance (NMR) spectroscopy were used to investigate the influence of drying–wetting cycles on the soil–water characteristic curve (SWCC) and pore-size distribution (POSD) of undisturbed residual soil. …”
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  7. 107

    Production of Malheuran A, a Geranylated Flavonoid with Antimicrobial and Anti-Inflammatory Activities, in Hairy Root Cultures of <i>Dalea purpurea</i> by Amit Raj Sharma, Gaurav Gajurel, Salma Abdel-Karim, Mohammad Abrar Alam, Robert Colquhoun Shields, Fabricio Medina-Bolivar

    Published 2025-01-01
    “…The co-treatment of the hairy root cultures with the elicitors methyl-β-cyclodextrin, magnesium chloride, methyl jasmonate, and hydrogen peroxide led to the production and secretion of the geranylated flavanone malheuran A, which was confirmed by mass spectrometry and NMR spectroscopy analyses. The highest amount (104.3 ± 6.9 mg/L) of malheuran A was detected at 192 h after elicitor treatment. …”
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  8. 108

    Synthesis and preliminary ex vivo evaluation of the spasmolytic activity of 1,3-thiazolium- and 1,3,4-thiadiazolium-5-methylthio- and 5-thioacetate derivatives by Luis José A. S., Aquino Thiago M. De, Lira Bruno F., Filho Petrônio F. A., Scotti Marcus T., Scotti Luciana, Moura Ricardo O. De, Junior Francisco J. B. Mendonça

    Published 2014-06-01
    “…The structure of the title compounds was elucidated by elemental analysis, IR, 1H and 13C NMR spectroscopy. The newly synthesized compounds 5a, 6a, 11 and 12 were evaluated for their ex vivo spasmolytic potential on four isolated smooth muscles (rat aorta and uterus, guinea pig ileum and trachea) and compared with scopolamine. …”
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  9. 109

    Development of Homogeneous Carboxylation of Phenolates via Kolbe–Schmitt Reaction by Dmitry A. Merzliakov, Michael S. Alexeev, Maxim A. Topchiy, Dmitry G. Yakhvarov, Nikolai Yu. Kuznetsov, Anton L. Maximov, Irina P. Beletskaya

    Published 2025-01-01
    “…The use of <sup>13</sup>C NMR spectroscopy enabled the observation of a “carbonate complex” in the solution for the first time, with the carbonate carbon displaying a chemical shift value of 142 ppm, an unusual finding for stable carbonates, and located between the signals of free dissolved CO<sub>2</sub> and carboxylate derivatives.…”
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  10. 110

    Identification of an inter-cysteine loop potentially involved in the activity of Opisthorchis viverrini-granulin-1 by Rozita Takjoo, David T. Wilson, Paramjit S. Bansal, Alex Loukas, Michael J. Smout, Norelle L. Daly

    Published 2023-06-01
    “…Methods: Peptides corresponding to the three inter-cysteine loops of the N-terminal domain were produced using synthetic chemistry, and their structures and bioactivities were analyzed using nuclear magnetic resonance (NMR) spectroscopy and cell proliferation assays, respectively. …”
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  11. 111
  12. 112

    Synthesis, Characterization, Semiempirical and Biological Activities of Organotin(IV) Carboxylates with 4-Piperidinecarboxylic Acid by Shabbir Hussain, Saqib Ali, Saira Shahzadi, Saroj K. Sharma, Kushal Qanungo, Muhammad Shahid

    Published 2014-01-01
    “…In solution state, five and four coordinated geometry around tin was confirmed by NMR spectroscopy. The EI-MS data agreed well with the molecular structure of the complexes. …”
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  13. 113

    Synthesis, Characterization and Antibacterial activity of Benzimidazole Derivatives and their Cu (ii),Ni (ii) and Co (ii) complexes by Haftom Welderufael, Dagne Addisu Kure, Endalkachew Asefa Moges, Lelisa File, Salah Hamza Sherif

    Published 2023-04-01
    “…The structures of all the synthesized ligands were confirmed by using IR, UV-Visible, 1H NMR, and 13C NMR spectroscopy. The Cu (II), Ni (II) and Co (II) complexes were confirmed by using IR and VU-Visible spectra.  …”
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  14. 114
  15. 115

    Design and In Vitro Biological Evaluation of a Novel Organotin(IV) Complex with 1-(4-Carboxyphenyl)-3-ethyl-3-methylpyrrolidine-2,5-dione by Nebojša Đ. Pantelić, Bojana B. Zmejkovski, Željko Žižak, Nebojša R. Banjac, Bojan Đ. Božić, Tatjana P. Stanojković, Goran N. Kaluđerović

    Published 2019-01-01
    “…A novel triphenyltin(IV) compound with 1-(4-carboxyphenyl)-3-ethyl-3-methylpyrrolidine-2,5-dione was synthesized and characterized by IR, NMR spectroscopy, mass spectrometry, and elemental analysis. …”
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  16. 116

    Synthesis, Characterization and Antibacterial activity of Benzimidazole Derivatives and their Cu (ii),Ni (ii) and Co (ii) complexes by Haftom Welderufael, Dagne Addisu Kure, Endalkachew Asefa Moges, Lelisa File, Salah Hamza Sherif

    Published 2023-04-01
    “…The structures of all the synthesized ligands were confirmed by using IR, UV-Visible, 1H NMR, and 13C NMR spectroscopy. The Cu (II), Ni (II) and Co (II) complexes were confirmed by using IR and VU-Visible spectra.  …”
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    Article
  17. 117

    Discovery of Antimalarial Drugs from Streptomycetes Metabolites Using a Metabolomic Approach by Siti Junaidah Ahmad, Mohd Badrin Hanizam Abdul Rahim, Syarul Nataqain Baharum, Mohd Shukri Baba, Noraziah Mohamad Zin

    Published 2017-01-01
    “…The highly sensitive instruments, such as Liquid Chromatography-Mass Spectrophotometry (LC-MS), Gas Chromatography-Mass Spectrophotometry (GC-MS), and Nuclear Magnetic Resonance (1H-NMR) spectroscopy, provide a wide range of information in the identification of potentially bioactive compounds. …”
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  18. 118

    “Pillaring Effects” in Cross-Linked Cellulose Biopolymers: A Study of Structure and Properties by Inimfon A. Udoetok, Lee D. Wilson, John V. Headley

    Published 2018-01-01
    “…X-ray diffraction (XRD) and 13C NMR spectroscopy indicate that cellulose adopts a one-chain triclinic unit cell structure (P1 space group) with gauche-trans (gt) and trans-gauche (tg) conformations of the glucosyl linkages and hydroxymethyl groups. …”
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  19. 119

    In Vitro and In Silico Cytotoxic and Antibacterial Activities of a Diterpene from Cousinia alata Schrenk by Almira Zhanzhaxina, Yerlan Suleimen, Ahmed M. Metwaly, Ibrahim H. Eissa, Eslam B. Elkaeed, Raigul Suleimen, Margarita Ishmuratova, Kydyrmolla Akatan, Walter Luyten

    Published 2021-01-01
    “…The structures of isolated compounds were determined by MS, 1D, and 2D NMR spectroscopy methods. Compounds (1–7) were isolated for the first time from Cousinia genus.…”
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  20. 120

    Facile Synthesis of Propranolol and Novel Derivatives by Vy Anh Tran, Nguyen Hai Tai Tran, Long Giang Bach, Trinh Duy Nguyen, Thi Thuong Nguyen, Tan Tai Nguyen, Thi Anh Nga Nguyen, The Ky Vo, Thu-Thao Thi Vo, Van Thuan Le

    Published 2020-01-01
    “…Mass spectrometry and 1H-NMR spectroscopy were applied to identify new compounds structure. …”
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    Article