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Journal articles on the topic 'Identification par RMN 13C'

Author: Grafiati

Published: 29 March 2023

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1

Bonnet, A., G. Barre, and P. Gilard. "« Trinoyaux ». Détermination des structures par RMN 1H, 13C et 15N." Journal de Chimie Physique 92 (1995): 1823–28. http://dx.doi.org/10.1051/jcp/1995921823.

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2

Le Botlan, D. J. "Etude par spectroscopie rmn 13C de la solution aqueuse formaldehyde-methanol." Journal de Chimie Physique 84 (1987): 115–23. http://dx.doi.org/10.1051/jcp/1987840115.

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3

Elguero, J., R. Faure, E. J. Vincent, and R. Lazaro. "Étude Par RMN du 13C Du Benzothiazole et de Ses Dérivés Nitrés." Bulletin des Sociétés Chimiques Belges 86, no. 1-2 (September 1, 2010): 95–96. http://dx.doi.org/10.1002/bscb.19770860115.

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4

Baiwir, Marcel, Gabriel Llabres, Marie-Caroline Pardon, and Jean-Louis Piette. "Etude par RMN de composés organiques contenant des chalcogènes—IX.* RMN du 13C dans des dérivés aromatiques du tellurényle." Spectrochimica Acta Part A: Molecular Spectroscopy 42, no. 1 (January 1986): 57–61. http://dx.doi.org/10.1016/0584-8539(86)80132-5.

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5

Grenier-Loustalot, Marie-Florence, Laurence Orozco, and Philippe Grenier. "Etude structurale du prépolymère tetraglycidyl diamino diphenyl methane par RMN 13C et hplc." European Polymer Journal 22, no. 11 (January 1986): 921–32. http://dx.doi.org/10.1016/0014-3057(86)90068-6.

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6

Gastmans, J. P., V. E. De Paula, and M. Furlan. "Etude par microordinateur de l'influence des atomes voisins sur les signaux RMN de 13C." Computers & Chemistry 12, no. 4 (January 1988): 285–87. http://dx.doi.org/10.1016/0097-8485(88)80001-9.

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7

Grenier-Loustalot, Marie-Florence, Dominique Renotte-Greco, and Philippe Grenier. "Etude des proprietes de surface par chromatographie gazeuse inverse de silices greffees caracterisees par RMN 13C et DSC." European Polymer Journal 29, no. 9 (September 1993): 1185–96. http://dx.doi.org/10.1016/0014-3057(93)90147-8.

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8

Da Silva Pinto, P. S., R. P. Eustache, M. Audenaert, and J. M. Bernassau. "Calculs empiriques de déplacements chimiques RMN 13C de polymères par régression multilinéaire et modélisation moléculaire." Revue de l'Institut Français du Pétrole 51, no. 1 (January 1996): 125–29. http://dx.doi.org/10.2516/ogst:1996011.

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9

Benayada, B., D. Nicole, JJ Delpuech, and G. Serratrice. "Détermination par RMN 13C des constantes de diffusion rotationnelles de molécules polyaromatiques à l'état de monomère." Journal de Chimie Physique 93 (1996): 427–41. http://dx.doi.org/10.1051/jcp/1996930427.

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10

Masse, M. O., C. Delporte, and E. Bervelt. "Identification de filtres solaires dérivés de l'acide para-aminobenzoique par spectroscopie RMN et par CPG/SM." International Journal of Cosmetic Science 23, no. 5 (October 2001): 259–79. http://dx.doi.org/10.1046/j.1467-2494.2001.00076.x.

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11

Sarazin, C., G. Goethals, JP Seguin, MD Legoy, and JN Barbotin. "Étude par spectroscopie RMN 1H et 13C de la synthèse d’esters en milieu organique catalysée par une lipase : influence de l’eau." Journal de Chimie Physique 89 (1992): 541–47. http://dx.doi.org/10.1051/jcp/1992890541.

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12

Salah, Nessrine, Youssef Arfaoui, Mohamed Bahri, Mohamed Lotfi Efrit, and Azaiez Ben Akacha. "Synthese et Etude Conformationnelle Par RMN (1H, 13C, 31P) et DFT des Cycloalcoxyphosphinallenes et des Hydrazones β-Cycloalcoxyphosphonatees." Phosphorus, Sulfur, and Silicon and the Related Elements 188, no. 5 (May 1, 2013): 609–22. http://dx.doi.org/10.1080/10426507.2012.700348.

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13

Membrey, François, and Efroim Steiner. "Etude par RMN 13C des interactions intramoléculaires dans les benzènes para-disubstitués: mise en évidence par régressions linéaires de trois types de comportement." Spectrochimica Acta Part A: Molecular Spectroscopy 43, no. 5 (January 1987): 593–604. http://dx.doi.org/10.1016/0584-8539(87)80139-3.

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14

Petiaud, Roger, and Quang Tho Pham. "Polychloroprene. II. Etude comparée de la microstrusture par RMN 1H et 13C. Thermodynamique de propagation des différentes unités structurales." Journal of Polymer Science: Polymer Chemistry Edition 23, no. 5 (May 1985): 1343–60. http://dx.doi.org/10.1002/pol.1985.170230508.

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15

Grenier-Loustalot, M. F., M. Audenaert, J. Boutillier, A. Gascoin, and D. Lecacheux. "Microstructure de copolyméres éthylène, méthacrylate de glycidyle et acétate de vinyle par IRTF et par RMN 13C et 1H haute résolution dans les liquides." European Polymer Journal 25, no. 3 (January 1989): 211–20. http://dx.doi.org/10.1016/0014-3057(89)90220-6.

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16

Delfourne, E., L. Gorrichon, and C. Zedde. "Dioxolannes chiraux derives de l'acide (-)shikimique. Determination par RMN 1H 2D et 13C de la configuration du centre asymetrique cree." Tetrahedron Letters 29, no. 36 (January 1988): 4555–58. http://dx.doi.org/10.1016/s0040-4039(00)80545-6.

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17

Tougne, P., and AP Legrand. "Mesure du taux de carbone non protoné par déphasage dipolaire en RMN de solide du 13C dans des molécules aromatiques." Journal de Chimie Physique 89 (1992): 489–95. http://dx.doi.org/10.1051/jcp/1992890489.

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18

Petit, A., M. T. Cung, and J. Néel. "Étude de la composition et de la microstructure de copolymères radicalaires vinyl-4 pyridine-styrène par RMN 1H et 13C." European Polymer Journal 23, no. 7 (January 1987): 507–14. http://dx.doi.org/10.1016/0014-3057(87)90105-4.

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19

Jabli, Dhiab, Khaireddine Dridi, and Mohamed Lotfi Efrit. "Activité biologique, réactivité et étude conformationnelle par RMN (1H, 13C, 31P) et DFT des hydrazines phosphonylées vis-á-vis des isothiocyanates." Phosphorus, Sulfur, and Silicon and the Related Elements 192, no. 1 (November 15, 2016): 103–8. http://dx.doi.org/10.1080/10426507.2016.1225740.

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20

Maraval, M., M. E. Borredon, M. Delmas, J. Dubac, and A. Gaset. "Action d'halogenosilanes sur les oxydes de vinyl-2 furanne, de styrene et de butene-1. etude des regio isomeres par rmn-13C." Tetrahedron Letters 29, no. 27 (January 1988): 3307–10. http://dx.doi.org/10.1016/0040-4039(88)85148-7.

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21

Boichot, C., P. Walker, M. Grimaldi, S. Chapuis, C. Durand, F. Brunotte, and J. B. Gouyon. "13 Identification d’indicateurs pronostiques par rmn cérébrale en cas d’asphyxie périnatale sévère chez les nouveau-nés à terme." Journal de Gynécologie Obstétrique et Biologie de la Reproduction 34, no. 3 (May 2005): 285. http://dx.doi.org/10.1016/s0368-2315(05)82765-6.

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22

Bendayan, Andrée, Henriette Masotti, Gilbert Peiffer, Chhan Siv, and Robert Faure. "Synthese de ligands de type amino-diphosphinites; etude en RMN 13C et 31P. Application a la dimerisation du butadiene par les complexes du nickel." Journal of Organometallic Chemistry 326, no. 2 (June 1987): 289–97. http://dx.doi.org/10.1016/0022-328x(87)80164-x.

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23

Claramunt, Rosa Maria, José Elguero, and Alain Fruchier. "Réaction De L'Indazole Avec Le Chlorure De Trityle: Identification Par Rmn Du Proton Des Isomères 1-, 2-Et 3-Substitues." Bulletin des Sociétés Chimiques Belges 94, no. 6 (September 1, 2010): 421–24. http://dx.doi.org/10.1002/bscb.19850940609.

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24

Grenier-Loustalot, M. F., M. Audenaert, J. Boutillier, and D. Lecacheux. "Etude structurale (sequence, tacticite, branchement alkyl) de copo ethylene, acrylate d'hydroxyethyle et acetate de vinyle par RMN 1H et 13C haute resolution dans les liquides." European Polymer Journal 25, no. 4 (1989): 411–18. http://dx.doi.org/10.1016/0014-3057(89)90159-6.

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25

Tytgat, D., and M. Gelbcke. "Stéréochimie de (2S, 4S, 5R;2S, 4S, 5S)- et (2R, 4S, 5R;2R, 4S, 5S)-2-alkyl-1,3,4-triméthyl-5-phénylimidazolidines déterminée par RMN-−1H et -−13C." Bulletin des Sociétés Chimiques Belges 99, no. 5 (September 1, 2010): 329–34. http://dx.doi.org/10.1002/bscb.19900990507.

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26

Tytgat, D., and M. Gelbcke. "Mise En Evidence Par Rmn-1H Et -13C D'Isomerisme Z/E Et D'Equilibre Conformationnel Sur Une Serie De Derives Mono- Et Diacetyles De 2-Alkylamino-1-Phenylpropan-1-Ols." Bulletin des Sociétés Chimiques Belges 101, no. 6 (September 1, 2010): 479–89. http://dx.doi.org/10.1002/bscb.19921010607.

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27

Khan, A. J., S. Akhtar, A. A. Al-Shihi, F. M. Al-Hinai, and R. W. Briddon. "Identification of Cotton leaf curl Gezira virus in Papaya in Oman." Plant Disease 96, no. 11 (November 2012): 1704. http://dx.doi.org/10.1094/pdis-05-12-0438-pdn.

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Papaya is an important fruit crop in Oman covering some 130 ha with an annual production of 20 tonnes. In 2011, during surveys of farms in the Quriyat region of Oman, papaya plants were found severely affected by leaf curl disease. Leaves with severe curling, vein darkening, and vein thickening were collected for study. Disease incidence ranged from 30 to 50%, particularly in fields with young papaya. A begomovirus (family Geminiviridae) was suspected as the causal agent based on symptoms (1) and the presence of whiteflies in the field. Samples (four to five) were collected from three farms. Total nucleic acids extracted from symptomatic leaves using the CTAB method were used as templates to amplify circular DNAs using Φ29 DNA polymerase and products were digested with restriction enzymes to identify fragments of 2.6 to 2.8 kb typical of geminiviruses. PstI yielded a fragment of ~1.8 kb when the digested product was analyzed by electrophoresis on a 1% agarose gel. The fragment was cloned and sequenced using primer walking strategy in both directions. The sequencing confirmed the exact size (1,764 bp) and the sequence was deposited in GenBank (HE800524). The viral sequence from Oman (isolate Pap-2) showed four open reading frames (ORFs) in the complementary sense (replication associated protein [Rep] gene, the C2 gene, the replication enhancer protein [REn] gene, and the C4 gene) and the virion-sense ORFs (V1 and V2) were missing in the sequence. An initial comparison to NCBI database sequences using BLAST showed the clone from Oman had the highest level of sequence identity to Cotton leaf curl Gezira virus (CLCuGeV) (FJ868828) cloned from okra in Sudan. Subsequent pair wise sequence comparison was done using ClustalV algorithm. Full length sequences of CLCuGeV from database were trimmed according to the size and genomic coordinates of Pap-2 isolate. The Pap-2 isolate sequence was found to have 83.3 to 95.1% sequence identity to CLCuGeV sequences with maximum value to the Sudan isolate. Amino acid sequence comparison showed that the four predicted proteins (Rep, C2, REn, and C4) encoded by the Pap-2 isolate shared 95.3%, 97.8%, 97.7%, and 87.6% sequence identity, respectively, with the homologous proteins of CLCuGeV-SD (FJ868828). The absence of virion-sense protein sequences indicated it to be a subgenomic molecule of CLCuGeV. According to the recommendations of International Committee on Taxonomy of Viruses, these results indicate that the virus identified in association with papaya leaf curl disease in Oman is a variant of CLCuGeV. CLCuGeV is a begomovirus of African origin which is distinct from the begomoviruses of the Middle East and Asia. To our knowledge, this is the first report of CLCuGeV, or any other cotton infecting begomovirus, from papaya in Oman. The presence of a recombinant fragment of CLCuGeV in a Tomato yellow leaf curl virus isolate from Iran (2), and the association of CLCuGeV with cotton in Pakistan (3) and hollyhock in Jordan (GU945265) suggests this virus has moved into the Middle East and Asia from Africa. The identification of CLCuGeV in Oman shows the widespread occurrence of this virus species. This discovery is important since Oman, and other countries in the area, are a hub of international trade and travel, particularly by air and sea, meaning that the virus could spread further. References: (1) R. W. Briddon and P. G. Markham. Virus Res. 71:151, 2000. (2) P. Lefeuvre et al. PLoS Pathog. 6:e1001164, 2010. (3) M. N. Tahir et al. PLoS ONE 6:e20366, 2011.

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28

Oubair, Ahmad, Rachid Fihi, and Hamid Mazouz. "Synthèse de nouveaux dérives de la R-(+)-pulégone par la technique de four à micro-onde en milieu sec et étude de leur impact sur les champignons attaquant la pomme dans les entrepôts de stockage." Bulletin de la Société Royale des Sciences de Liège, 2016, 119–29. http://dx.doi.org/10.25518/0037-9565.5400.

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Dans ce travail on a réalisé la condensation de la R-(+)-pulégone avec une série d’aryaldéhyde en présence d’hydrure de sodium. L’activation par micro-ondes dans des conditions sans solvant, a été applique dans le protocole de synthèse. Le processus est très efficace. Il permet en quelques minutes de préparer de nouveaux dérivés de la pulégone avec des rendements remarquables. Les analyses spectroscopiques à savoir RMN 1H, 13C et IR permet d’envisager les structures des nouveaux produits synthétisés. Ainsi on a étudié l’impact de ces nouveaux produits sur la croissance mycélienne des souches des champignons P. expansum, Alternariat sp et R. stolonifer, isolées des pommes pourries en post-récolte.

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