Relevant bibliographies by topics / DEPT-NMR

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'DEPT-NMR'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "DEPT-NMR"

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Newmark, Richard A. "DEPT NMR Spectra of Copolymers." Applied Spectroscopy 39, no. 3 (1985): 507–12. http://dx.doi.org/10.1366/0003702854248674.

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DEPT (Distortionless Enhancement by Polarization Transfer) spectra have been obtained on eight commercial polymers in order that the general applicability of this new multipulse technique for the assignment of carbon multiplicity in their proton noise decoupled 13C NMR spectra might be assessed. The spin-lattice and spin-spin relaxation times have been measured and correlated with the quality of the edited DEPT spectra.
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Díaz T., Eduardo, Christopher K. Jankowski, Celine Hocquelet, Federico del Rio P. та Héctor Barrios. "The unambiguous assignment of NMR spectra of per-O-methylated 6-mono and 6,6-diamino-β-cyclodextrins". Canadian Journal of Chemistry 86, № 7 (2008): 726–36. http://dx.doi.org/10.1139/v08-063.

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The step-by-step analysis of high-resolution proton and 13C NMR spectra of per-O-methylated-6-monoamino and 6,6-diamino-A,D-β-cyclodextrins is described. Selected 2-D experiments (COSY, NOESY, HSQC, DEPT, and HMBC) allowed us to challenge the current interpretation. The full assignment of the proton and carbon-13 NMR spectra of these two compounds was performed enabling us to complete the assignment of NMR spectra acquired at 500 and 800 MHz for these important synthetic intermediates.Key words: COSY, NOESY, HSQC, DEPT, HMBC, NMR, 6-amino-β-cyclodextrins, 6,6-diamino-β-cyclodextrins.
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Cabrita, Maria João, Arona Pires, Anthony J. Burke, and Raquel Garcia. "Seeking a Fast Screening Method of the Varietal Origin of Olive Oil: The Usefulness of an NMR-Based Approach." Foods 10, no. 2 (2021): 399. http://dx.doi.org/10.3390/foods10020399.

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This work encompasses the use of 1D multinuclear NMR spectroscopy, namely, 1H NMR and 13C NMR DEPT 45, combined with a multivariate statistical analysis to characterize olive oils produced from nine different varieties: Galega Vulgar, Cobrançosa, Cordovil de Serpa, Blanqueta, Madural, Verdeal Alentejana, Arbequina, Picual and Carrasquenha. Thus, the suitability of an NMR-based spectroscopic tool to discriminate olive oils according to their varietal origin is addressed. The results obtained show that the model based on 13C NMR DEPT 45 data has a stronger performance than the model based on 1H
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Gurst, Jerome E. "Computer-Generated Edited DEPT NMR Spectra." Journal of Chemical Education 71, no. 3 (1994): 234. http://dx.doi.org/10.1021/ed071p234.1.

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D'Agostino, Carmine, Mick D. Mantle, and Lynn F. Gladden. "In situ high-pressure 13C/1H NMR reaction studies of benzyl alcohol oxidation over a Pd/Al2O3 catalyst." Reaction Chemistry & Engineering 5, no. 6 (2020): 1053–57. http://dx.doi.org/10.1039/c9re00489k.

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Lesbani, Aldes, Addy Rachmat, Risfidian Mohadi, and Eliza Eliza. "PENGGUNAAN KATALIS PALADIUM DALAM REAKSI ARILASI n-OKTILSILAN DENGAN 2-IODIDA-5-METIL TIOFEN." Molekul 9, no. 1 (2014): 18. http://dx.doi.org/10.20884/1.jm.2014.9.1.146.

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Telah dilakukan proses arilasi n-oktilsilan dengan 2-iodida-5-metil tiofen mengunakan katalis palladium dengan teknik reaksi kopling untuk mendapatkan variasi senyawa hasil arilasi. Produk hasil arilasi yang terbentuk dimurnikan dengan metode kromatografi kolom silika dengan eluen etil asetat dan dikarakterisasi menggunakan spektroskopi massa, spektroskopi 1H NMR, 13C NMR, dan DEPT-135. Hasil penelitian menunjukkan bahwa senyawa yang terbentuk dari hasil arilasi yakni tris(5-metil-2-tiofen)oktilsilan yang berupa cairan tak berwarna dengan nilaim/z sebesar 432. Hasil pengukuran menggunakan spek
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Rahman, S. M. Mizanur, Serajum Munira, and M. Amzad Hossain. "PHYTOCHEMICAL STUDY OF THE ARIAL PARTS OF Cleome rutidosperma DC PLANT." Indonesian Journal of Chemistry 8, no. 3 (2010): 459–62. http://dx.doi.org/10.22146/ijc.21606.

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Two new compounds were identified as 2-ethyl-cyclohex-2-ene-6-hydroxy-methylene-1-carboxylic acid and 3b-hydroxy-lup-20(29)-en-28-oic acid, respectively, from the petroleum ether extracts of Cleome rutidosperma plant. These two constituents is the first time occurrence in this plant. The structures of the two different type of compounds are elucidated with the help of UV, IR, 1H-NMR, 13C-NMR, COSY, DEPT 90, DEPT 135 and mass spectral data. Keywords: Cleome rutidosperm DC; isolation; spectral analysis
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Clough, R. S., and J. L. Koenig. "Solid-State Carbon-13 NMR Studies of Vulcanized Elastomers. VII. Sulfur-Vulcanized Cis-1,4 Polybutadiene at 75.5 Mhz." Rubber Chemistry and Technology 62, no. 5 (1989): 908–27. http://dx.doi.org/10.5254/1.3536283.

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Abstract Solid-state C-13 NMR spectroscopy provides a wealth of chemical information concerning sulfur-vulcanized cis-l,4-polybutadiene. New resonances which appear upon curing have chemical shifts which are expected for crosslink and cyclic structures. The DEPT experiment with MAS worked well for the polybutadiene vulcanizate in the solid state. DEPT is very useful as an aid in the assignment of structures to resonances. The new resonances can be assigned to more than one type of structure given only chemical shift and DEPT information. Swelling measurements indicate the majority of the reson
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Mohamed, Abou El-Hamd H., Hosam-Eldin H. Mahmoud, Fathy F. Abdellatif, Yousif S. Mohamed, and Ahmed A. Ahmed. "New Guaianolide-Type Sesquiterpene Lactones from Inula verbascifolia." Zeitschrift für Naturforschung C 68, no. 5-6 (2013): 175–80. http://dx.doi.org/10.1515/znc-2013-5-602.

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The aerial parts of Inula verbascifolia afforded two new guaianolide-type sesquiterpene lactones. Their structures were determined by spectroscopic methods (IR, MS, 1H NMR, 13C NMR, DEPT, 1H-1H COSY, HMQC, and HMBC).
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Jiang, Ai, Margrate Anyanwu, Kafai Leong, et al. "3-[(1H-Benzo[d][1,2,3]triazol-1-yl)oxy]propyl 9-hydroxy-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-3aH-cyclopenta[a]chrysene-3a-carboxylate." Molbank 2022, no. 3 (2022): M1419. http://dx.doi.org/10.3390/m1419.

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We herein report on the synthesis of a pentacyclic triterpene functionalized through derivation of betulinic acid with hydroxybenzotriazole. The compound was fully characterized by proton (1H-NMR), carbon-13 (13C-NMR), heteronuclear single quantum coherence (HSQC) and distortionless enhancement by polarization transfer (DEPT-135 and DEPT-90) nuclear magnetic resonance. Ultraviolet (UV), and Fourier-transform infrared (FTIR) spectroscopies as well as and high-resolution mass spectrometry (HRMS) were also adopted. Computational studies were conducted to foresee the interactions between compound
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Dissertations / Theses on the topic "DEPT-NMR"

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Debelouchina, Galia Tzvetanova. "Amyloid fibril structure of peptides and proteins by magic angle spinning NMR spectroscopy and dynamic nuclear polarization." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68485.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2011.<br>Vita. Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references.<br>Amyloid fibrils are insoluble, non-crystalline protein filaments associated with a number of diseases such as Alzheimer's and Type Il diabetes. They can have a functional role in different organisms and many proteins and peptides have been found to form amyloid fibrils in vitro. We have used magic angle spinning (MAS) NMR spectroscopy to investigate the structure of two amyloid fibril systems - an 11- resid
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Book chapters on the topic "DEPT-NMR"

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Baker, Julia P. "Combining Molecular Modeling with13C and DEPT NMR Spectroscopy To Examine the Dehydration of 1-Methylcyclohexanol." In ACS Symposium Series. American Chemical Society, 2016. http://dx.doi.org/10.1021/bk-2016-1221.ch007.

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Rahman, Atta-Ur, and M. I. Choudhary. "Structural studies on new compounds from medicinal plants of Pakistan, Jordan, Sri Lanka, and Turkey." In Phytochemistry of Plants Used in Traditional Medicine. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780198577751.003.0012.

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Abstract Medicinal plants offer a vast resource of novel natural products, often with exciting activities and biological properties. The following chapter presents some representative examples of natural products isolated from medicinal plants of Pakistan, Jordan, Sri Lanka, and Turkey in our laboratories. Their structures were elucidated using modern mass spectroscopic and NMR techniques. Both lD (1H-NMR, C-NMR, DEPT, NOE, homodecoupling, etc.) and 2D (COSY-45°, NOESY, HOHAHA, heteroCOSY, 2D J-resolved, COLOC, etc.) NMR experiments as well as recently developed inverse NMR techniques (HMQC an
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Yadav, Ramji Lal, Neeru Singh, S. N. Karaiya, Rahul Dev, and Anil Kumar. "Characterization of 2-Deoxy-D-glucose." In 2-Deoxy-D-Glucose: Chemistry and Biology. BENTHAM SCIENCE PUBLISHERS, 2024. http://dx.doi.org/10.2174/9789815305159124010006.

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2-Deoxy-D-glucose is an important pharmaceutical intermediate, and its analytical characterization is critical for establishing its purity and quality. This chapter summarizes spectroscopic techniques, including UV, IR, NMR, and mass spectrometry, along with HPLC and GC studies used for the complete structural elucidation and purity analysis of 2-Deoxy-D-glucose. The UV spectrum of 2-DeoxyD-Glucose showed no distinct peaks. The IR spectrum displayed characteristic bands for the O-H and C-H functional groups. 1H, 13C, APT, DEPT NMR, HSQC, and HMBC experiments confirmed the nominally proposed st
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Primasova, Hedvika, Peter Bigler, and Julien Furrer. "The DEPT Experiment and Some of Its Useful Variants." In Annual Reports on NMR Spectroscopy. Elsevier, 2017. http://dx.doi.org/10.1016/bs.arnmr.2017.04.001.

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Conference papers on the topic "DEPT-NMR"

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Deebb, Samara, and Mohammad Sadakaa. "Synthesis of New Amino Acid-Conjugated Derivatives of a Sulphonamide." In 5th International Conference on Biomedical and Health Sciences. Cihan University-Erbil, 2024. http://dx.doi.org/10.24086/biohs2024/paper.1270.

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The subsequent synthesis involved the preparation of novel sulfonamide derivatives from 4-acetamidobenzenesulfanyl chloride. 4-acetamidobenzenesulfanyl chloride was synthesized as the initial compound, followed by the preparation of derivatives through the reaction of 4-acetamidobenzenesulfanyl with the amino acids valine, alanine, and tryptophan using a basic solution of sodium hydroxide. The structures of the derivatives determined by the using FT-IR, 1 H-NMR, 13C-NMR, and DEPT 135o analysis. In addition, the derivatives were also evaluated for their antimicrobial effectiveness against signi
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Bilan, Dmitri, Sergiu Cojocari, Natalia Sucman, Eughenia Stingaci, and Fliur Macaev. "Transforming the five-membered ring d in a pregnenolone derivative into a six-membered ring through skeletal rearrangement." In Scientific seminar with international participation "New frontiers in natural product chemistry". Institute of Chemistry, Republic of Moldova, 2023. http://dx.doi.org/10.19261/nfnpc.2023.ab22.

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In pursuit of obtaining steroid derivatives containing a triazole moiety in their structure, a series of reactions was conducted (Figure 1). In these reactions, an intermediate compound was the corresponding azide 3, which was subsequently involved in a reaction with the required alkyne to form a 1,2,3-triazole. In click chemistry reactions, it is well-known that catalysts are one-valent copper salts, which can be generated in situ from copper(II) salts. However, the NMR spectra of the main product, isolated from the reaction mass, did not match the expected results.Figure 1. The procedure for
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Bilan, Dmitri, Sergiu Cojocari, Vsevolod Pogrebnoi, Natalia Sucman, and Fliur Macaev. "The opening of dehydropregnenolone epoxide leading to the non-saturated skeletal rearrangement product." In Scientific seminar with international participation "New frontiers in natural product chemistry". Institute of Chemistry, Republic of Moldova, 2023. http://dx.doi.org/10.19261/nfnpc.2023.ab23.

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This report presents a compound that emerges as a product of the skeletal rearrangement following the opening of dehydropregnenolone epoxide (Figure 1). The opening of the epoxy cycle in dehydropregnenolone epoxide 1 in the presence of hydrochloric acid leads to the formation of two chromatographically inseparable diastereomers 2 and 3 (Figure 1).Figure 1. Scheme of the formation of diastereomers 2 and 3 In the literature, there is an example of the epoxide opening in absolute methanol. Thus, according to Girdhar et al [1], the reaction of compound 1 with dry HCl in dry MeOH at low temperature
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Reports on the topic "DEPT-NMR"

1

Henderson, Terry J. Design of a Quantitative DEPT NMR Experiment for Carbon-13 Acquisitions. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada552218.

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