301
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Liu DZ, Liang BW. Structural elucidation and NMR assignments of two new pyrrolosesquiterpenes from Streptomyces sp. Hd7-21. Magn Reson Chem 2014; 52:57-59. [PMID: 24272978 DOI: 10.1002/mrc.4031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 10/21/2013] [Accepted: 10/24/2013] [Indexed: 06/02/2023]
Abstract
Two new pyrrolosesquiterpenes were isolated from cultures of the soil actinomycete Streptomyces sp. Hd7-21. The structures of these compounds were elucidated by extensive spectroscopic analyses including MS and 1D and 2D NMR data. Their cytotoxic activity against a panel of human cancer cell lines were biologically evaluated.
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Affiliation(s)
- Dong-Ze Liu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
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302
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Mabou FD, Tebou PLF, Ngnokam D, Harakat D, Voutquenne-Nazabadioko L. Leptocarposide: a new triterpenoid glycoside from Ludwigia leptocarpa (Onagraceae). Magn Reson Chem 2014; 52:32-36. [PMID: 24170450 DOI: 10.1002/mrc.4023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 10/03/2013] [Accepted: 10/04/2013] [Indexed: 06/02/2023]
Abstract
A new triterpenoid bidesmoside (leptocarposide) possessing an acyl group in their glycosidic moiety (1), together with the known luteolin-8-C-glucoside (2) and 1-O-β-D-glucopyranosyl-(2S,3R,8E)-2-[(2'R)-2-hydroxypalmitoylamino]-8-octadecen-1,3-diol (3) was isolated from the n-butanol-soluble fraction of whole plant of Ludwigia leptocarpa (Nutt) Hara (Onagraceae). Structure of compound 1 has been assigned on the basis of spectroscopic data ((1)H and (13)C NMR, (1)H-(1)H COSY, HSQC, HMBC, and ROESY), mass spectrometry, and by comparison with the literature. This compound was further screened for its potential antioxidant properties by using the radical scavenging assay model 2,2-diphenyl-1-picrylhydrazyl and reveals non-potent antioxidant activities, while compound 2 shows SC50 of 0,038 mM.
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Affiliation(s)
- Florence Déclaire Mabou
- Faculty of Science, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon
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303
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Chen L, Duan Y, Li C, Wang Y, Tong X, Dai Y, Yao X. Four new prenylated flavonoids from the roots of Cudrania tricuspidata. Magn Reson Chem 2013; 51:842-846. [PMID: 24123417 DOI: 10.1002/mrc.4020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/14/2013] [Accepted: 09/16/2013] [Indexed: 06/02/2023]
Abstract
Four new prenylated flavonoids, cudraflavanones E-F (1-2) and cudraflavones F-G (6-7), together with eight known compounds were isolated from the roots of Cudrania tricuspidata. The structures of new compounds were elucidated on the basis of extensive spectroscopic analyses, including 1D and 2D NMR, HRESIMS and CD.
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Affiliation(s)
- Liuyuan Chen
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, China
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304
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Al Chab F, Fenet B, Le Borgne M, Jose J, Pinaud N, Guillon J, Ettouati L. 1H and 13C NMR assignments of bioactive indeno[1,2-b]indole-10-one derivatives. Magn Reson Chem 2013; 51:837-841. [PMID: 24123338 DOI: 10.1002/mrc.4016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 09/04/2013] [Accepted: 09/06/2013] [Indexed: 06/02/2023]
Abstract
The complete (1)H and (13)C assignments of eight bioactive indeno[1,2-b]indole-10-one derivatives were accomplished by the combined use of one-dimensional and two-dimensional NMR experiments.
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Affiliation(s)
- Faten Al Chab
- Université Lyon 1, Faculté de Pharmacie - ISPB, EA 4446 Biomolécules Cancer et Chimiorésistances, SFR Santé Lyon-Est CNRS UMS3453 - INSERM US7, Université de Lyon, 8 avenue Rockefeller, F-69373, Lyon, France
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305
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Balázs A, Hunyadi A, Csábi J, Jedlinszki N, Martins A, Simon A, Tóth G. 1H and 13C NMR investigation of 20-hydroxyecdysone dioxolane derivatives, a novel group of MDR modulator agents. Magn Reson Chem 2013; 51:830-836. [PMID: 24114927 DOI: 10.1002/mrc.4015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 09/03/2013] [Accepted: 09/06/2013] [Indexed: 06/02/2023]
Abstract
The synthesis, structure elucidation and the complete (1)H and (13)C signal assignment of a series of dioxolane derivatives of 20-hydroxyecdysone, synthesized as novel modulators of multidrug resistance, are presented. The structures and NMR signal assignment were established by comprehensive one-dimensional and two-dimensional NMR spectroscopy supported by mass spectrometry.
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Affiliation(s)
- Attila Balázs
- Ubichem Research Ltd., Illatos út 33, H-1097, Budapest, Hungary
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306
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Girreser U, Bluhm U, Clement B, Heber D. 1H, 13C and 15N NMR spectral analysis of substituted 1,2,3,4-tetrahydro-pyrido[1,2-a]pyrimidines. Magn Reson Chem 2013; 51:714-721. [PMID: 23996213 DOI: 10.1002/mrc.4005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 08/05/2013] [Accepted: 08/09/2013] [Indexed: 06/02/2023]
Abstract
The NMR spectroscopic data of a series of thirty-four 3-acylpyrido[1,2-a]pyrimidinium salts are analyzed, which were prepared as either perchlorates or chlorides. Methyl group substituted 3-aroyltetrahydropyrido[1,2-a]pyrimidines with the methyl substituent in positions 6, 8 and 9 as well as both in positions 6 and 8 were investigated bearing various aroyl substituents. Unequivocal assignment of all resonances was achieved via two-dimensional (1)H,(1)H-COSY measurements, (1)H,(13)C and (1)H,(15)N HSQC as well as HMBC experiments, and important diagnostic CH and NH couplings in the heteroaromatic ring system are evaluated. The influence of the methyl substituents was analyzed on the proton, carbon and nitrogen shifts. A significant effect of the counter ion on some chemical shifts of the nuclei under discussion of the pyridopyrimidines is found, allowing the indirect detection of the anion, which is confirmed by direct measurement of the (35)Cl nucleus of the perchlorates.
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Affiliation(s)
- Ulrich Girreser
- Pharmaceutical Institute, Department of Pharmaceutical Chemistry, Christian-Albrechts-University of Kiel, Gutenbergstraße 76, D-24118, Kiel, Germany
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307
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Jaźwiński J, Sadlej A. Complexation of rhodium(II) tetracarboxylates with aliphatic diamines in solution: 1H and 13C NMR and DFT investigations. Magn Reson Chem 2013; 51:662-670. [PMID: 23943201 DOI: 10.1002/mrc.3997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 07/15/2013] [Accepted: 07/15/2013] [Indexed: 06/02/2023]
Abstract
The complexation of rhodium(II) tetraacetate, tetrakistrifluoroaceate and tetrakisoctanoate with a set of diamines (ethane-1,diamine, propane-1,3-diamine and nonane-1,9-diamine) and their N,N'-dimethyl and N,N,N',N'-tetramethyl derivatives in chloroform solution has been investigated by (1) H and (13) C NMR spectroscopy and density functional theory (DFT) modelling. A combination of two bifunctional reagents, diamines and rhodium(II) tetracarboxylates, yielded insoluble coordination polymers as main products of complexation and various adducts in the solution, being in equilibrium with insoluble material. All diamines initially formed the 2 : 1 (blue), (1 : 1)n oligomeric (red) and 1 : 2 (red) axial adducts in solution, depending on the reagents' molar ratio. Adducts of primary and secondary diamines decomposed in the presence of ligand excess, the former via unstable equatorial complexes. The complexation of secondary diamines slowed down the inversion at nitrogen atoms in NH(CH3 ) functional groups and resulted in the formation of nitrogenous stereogenic centres, detectable by NMR. Axial adducts of tertiary diamines appeared to be relatively stable. The presence of long aliphatic chains in molecules (adducts of nonane-1,9-diamines or rhodium(II) tetrakisoctanoate) increased adduct solubility. Hypothetical structures of the equatorial adduct of rhodium(II) tetraacetate with ethane-1,2-diamine and their NMR parameters were explored by means of DFT calculations.
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Affiliation(s)
- Jarosław Jaźwiński
- Institute of Organic Chemistry PAS, ul. Kasprzaka 44/52, 01-224, Warsaw, Poland
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308
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Kraikin VA, Fatykhov AA, Sakhipova II, Sedova EA, Egorov AE, Salazkin SN. 13C NMR spectroscopy of copoly(arylenephthalide) derivatives with diphenyloxide and terphenyl fragments in the main chain. Magn Reson Chem 2013; 51:621-629. [PMID: 23921970 DOI: 10.1002/mrc.3991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 07/09/2013] [Accepted: 07/09/2013] [Indexed: 06/02/2023]
Abstract
(1) H and (13) С NMR spectral assignments have been provided for low-molecular reference monomers, poly(diphenyleneoxidephthalide) and periodic copoly(arylenephthalide) derivatives such as AB, ABB, and ABBB (where A = terphenylenephthalide and B = diphenyleneoxidephthalide) using (1) H-(1) H COSY, (1) H-(13) C HSQC and HMBC NMR techniques. Distinctive (13) C NMR chemical shifts of a main chain have been observed containing fragments of similar structures and lateral phthalate groups being part of various diads.
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Affiliation(s)
- Vladimir A Kraikin
- Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, pr. Oktyabrya 71, Ufa, 450054, Bashkortostan, Russia
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309
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Hill DK, Jamin Y, Orton MR, Tardif N, Parkes HG, Robinson SP, Leach MO, Chung YL, Eykyn TR. ¹H NMR and hyperpolarized ¹³C NMR assays of pyruvate-lactate: a comparative study. NMR Biomed 2013; 26:1321-1325. [PMID: 23712817 PMCID: PMC4298370 DOI: 10.1002/nbm.2957] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 01/08/2013] [Accepted: 03/08/2013] [Indexed: 05/22/2023]
Abstract
Pyruvate-lactate exchange is mediated by the enzyme lactate dehydrogenase (LDH) and is central to the altered energy metabolism in cancer cells. The measurement of exchange kinetics using hyperpolarized (13) C NMR has provided a biomarker of response to novel therapeutics. However, the observable signal is restricted to the exchanging hyperpolarized (13) C pools and the endogenous pools of (12) C-labelled metabolites are invisible in these measurements. In this study, we investigated an alternative in vitro (1) H NMR assay, using [3-(13) C]pyruvate, and compared the measured kinetics with a hyperpolarized (13) C NMR assay, using [1-(13) C]pyruvate, under the same conditions in human colorectal carcinoma SW1222 cells. The apparent forward reaction rate constants (kPL ) derived from the two assays showed no significant difference, and both assays had similar reproducibility (kPL = 0.506 ± 0.054 and kPL = 0.441 ± 0.090 nmol/s/10(6) cells; mean ± standard deviation; n = 3); (1) H, (13) C assays, respectively). The apparent backward reaction rate constant (kLP ) could only be measured with good reproducibility using the (1) H NMR assay (kLP = 0.376 ± 0.091 nmol/s/10(6) cells; mean ± standard deviation; n = 3). The (1) H NMR assay has adequate sensitivity to measure real-time pyruvate-lactate exchange kinetics in vitro, offering a complementary and accessible assay of apparent LDH activity.
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Affiliation(s)
- Deborah K Hill
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
| | - Yann Jamin
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
| | - Matthew R Orton
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
| | - Nicolas Tardif
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
| | - Harold G Parkes
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
| | - Simon P Robinson
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
| | - Martin O Leach
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
| | - Yuen-Li Chung
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
| | - Thomas R Eykyn
- Cancer Research UK and EPRSC Cancer Imaging Centre, Division of Radiotherapy and Imaging, The Institute of Cancer Research and Royal Marsden NHS Foundation Trust, 15 Cotswold Road, Sutton, Surrey, SM2 5NG. United Kingdom
- Division of Imaging Sciences and Biomedical Engineering, Kings College London, St Thomas Hospital, London, SE1 7EH, United Kingdom
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310
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Hwang D, Yoon H, Ahn S, Kim DW, Bae DH, Koh D, Lim Y. Complete assignments of 1H and 13C NMR data for 21 naphthalenyl-phenyl-pyrazoline derivatives. Magn Reson Chem 2013; 51:593-599. [PMID: 23813616 DOI: 10.1002/mrc.3981] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 05/28/2013] [Accepted: 05/29/2013] [Indexed: 06/02/2023]
Abstract
To find potent new chemotherapy drugs, we designed and synthesized a series of naphthochalcones bearing naphthalenyl-phenyl-pyrazoline moieties. The complete (1)H and (13)C NMR data for these compounds are reported here and can be used to identify further new naphthochalcones bearing the desired pyrazoline moieties.
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Affiliation(s)
- Doseok Hwang
- Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul 143-701, Korea
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311
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Yoon H, Ahn S, Park M, Kim DW, Kim SH, Koh D, Lim Y. 1H and 13C NMR spectral assignments of chalcones bearing pyrazoline-carbothioamide groups. Magn Reson Chem 2013; 51:500-508. [PMID: 23784987 DOI: 10.1002/mrc.3971] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 05/01/2013] [Accepted: 05/01/2013] [Indexed: 06/02/2023]
Abstract
Chalcones are known to act on various physiological targets. As a result, structural modifications of chalcones have been studied extensively. Benzochalcones, in which the A-ring of chalcone is substituted with a naphthalene unit, inhibits breast cancer resistance protein. Chalcones in which the α,β-unsaturated carbonyl group is switched with a pyrazoline moiety are potent cytotoxic agents against various cancer cell lines, and chalcones with a pyrazoline-1-carbothioamide group instead of an α,β-unsaturated carbonyl group exhibit antimicrobial activities. The present report describes hybrid molecules designed from benzochalcone and pyrazoline-carbothioamide. Methoxylation of plant-derived polyphenols alters their hydrophobicity, resulting in changes in biological function and intracellular compartmentation. In the current study, 22 novel methoxylated 3-(naphthalen-2-yl)-N,5-diphenyl-pyrazoline-1-carbothioamide derivatives were prepared. This report provides complete assignments of their (1)H and (13)C NMR data, which can be used to subsequently identify chalcones bearing pyrazoline-carbothioamide groups.
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Affiliation(s)
- Hyuk Yoon
- Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul, 143-701, Korea
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312
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Casimiro Bezerra DA, Fechine Tavares J, dos Santos PF, Castello Branco MVS, de Fátima Agra M, Subrinho FL, Braz-Filho R, da Silva MS. Structural elucidation and NMR assignments of a new pyrrolizidine alkaloid from Crotalaria vitellina Ker Gawl. Magn Reson Chem 2013; 51:497-499. [PMID: 23716472 DOI: 10.1002/mrc.3969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 04/24/2013] [Accepted: 04/25/2013] [Indexed: 06/02/2023]
Abstract
A new pyrrolizidine alkaloid, named crotavitelin, was isolated from fruits of Crotalaria vitellina, Fabaceae (Papilionoideae). The structure was established by spectroscopic techniques such as one-dimensional and two-dimensional NMR, IR, and MS.
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313
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Pan X, Wilson M, McConville C, Arvanitis TN, Griffin JL, Kauppinen RA, Peet AC. Increased unsaturation of lipids in cytoplasmic lipid droplets in DAOY cancer cells in response to cisplatin treatment. Metabolomics 2013; 9:722-729. [PMID: 23678346 PMCID: PMC3651531 DOI: 10.1007/s11306-012-0483-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 11/19/2012] [Indexed: 11/28/2022]
Abstract
Increases in 1H nuclear magnetic resonance spectroscopy (NMR) visible lipids are a well-documented sign of treatment response in cancers. Lipids in cytoplasmic lipid droplets (LDs) are the main contributors to the NMR lipid signals. Two human primitive neuroectodermal tumour cell lines with different sensitivities to cisplatin treatment were studied. Increases in NMR visible saturated and unsaturated lipids in cisplatin treated DAOY cells were associated with the accumulation of LDs prior to DNA fragmentation due to apoptosis. An increase in unsaturated fatty acids (UFAs) was detected in isolated LDs from DAOY cells, in contrast to a slight decrease in UFAs in lipid extracts from whole cells. Oleic acid and linoleic acid were identified as the accumulating UFAs in LDs by heteronuclear single quantum coherence spectroscopy (HSQC). 1H NMR lipids in non-responding PFSK-1 cells were unchanged by exposure to 10 μM cisplatin. These findings support the potential of NMR detectable UFAs to serve as a non-invasive marker of tumour cell response to treatment.
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Affiliation(s)
- Xiaoyan Pan
- Cancer Sciences, University of Birmingham, Birmingham, NH UK
- Birmingham Children’s Hospital NHS Foundation Trust, Birmingham, NH UK
| | - Martin Wilson
- Cancer Sciences, University of Birmingham, Birmingham, NH UK
- Birmingham Children’s Hospital NHS Foundation Trust, Birmingham, NH UK
| | | | - Theodoros N. Arvanitis
- Electronic, Electrical and Computer Engineering, University of Birmingham, Birmingham, NH UK
| | - Julian L. Griffin
- Department of Biochemistry and the Cambridge Systems Biology Centre, University of Cambridge, Cambridge, NH UK
| | - Risto A. Kauppinen
- Clinical Research and Imaging Centre and Department of Experimental Psychology, University of Bristol, Bristol, NH UK
| | - Andrew C. Peet
- Cancer Sciences, University of Birmingham, Birmingham, NH UK
- Birmingham Children’s Hospital NHS Foundation Trust, Birmingham, NH UK
- Institute of Child Health, Whittall Street, Birmingham, B4 6NH NH UK
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314
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Kim KB, Yang JY, Kwack SJ, Kim HS, Ryu DH, Kim YJ, Bae JY, Lim DS, Choi SM, Kwon MJ, Bang DY, Lim SK, Kim YW, Hwang GS, Lee BM. Potential metabolomic biomarkers for evaluation of adriamycin efficacy using a urinary 1H-NMR spectroscopy. J Appl Toxicol 2012; 33:1251-9. [PMID: 22782856 DOI: 10.1002/jat.2778] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 04/19/2012] [Accepted: 04/19/2012] [Indexed: 12/16/2022]
Abstract
A metabolomics approach using proton nuclear magnetic resonance (NMR) was applied to investigate metabolic alterations following adriamycin (ADR) treatment for gastric adenocarcinoma. After BALB/c-nu/nu mice were implanted with human gastric adenocarcinoma, ADR (1 or 3 mg kg(-1) per day) was intraperitoneally administered for 5 days. Urine was collected on days 2 and 5 and analyzed by NMR. The levels of trimethylamine oxide (TMAO, ×0.3), hippurate (×0.3) and taurine (×0.6) decreased significantly (P < 0.05), whereas the levels of 3-indoxylsulfate (×12.6), trigonelline (×1.5), citrate (×2.5), trimethylamine (TMA, ×2.0) and 2-oxoglutarate (×2.3) increased significantly (P < 0.05) in the tumor model. After ADR treatment, TMAO, hippuarte and taurine were increased significantly on day 5 compared with those of the tumor model. The levels of 2-oxoglutarate, 3-indoxylsulfate, trigonelline, TMA and citrate, which increased in the tumor model, significantly decreased to those of normal control by ADR treatment. Furthermore, the ratio between TMA and TMAO was dramatically altered in both tumor and ADR-treated groups. Overall, metabolites such as TMAO, TMA, 3-indoxylsulfate, hippurate, trigonelline, citrate and 2-oxoglutarate related to the tricarboxylic acid (TCA) cycle might be considered as therapeutic targets to potentiate the efficacy of ADR. Thus, these results suggest that the metabolomics analysis of tumor response to ADR treatment may be applicable for demonstrating the efficacy of anticancer agent, ADR and treatment adaptation.
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Affiliation(s)
- Kyu-Bong Kim
- College of Pharmacy, Dankook University, Dandae-ro, Cheonan, Chungnam, 330-714, Korea
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315
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Blechta V, Sabata S, Sýkora J, Hetflejš J, Soukupová L, Schraml J. The effect of solvent accessible surface on Hammett-type dependencies of infinite dilution (29)Si and (13)C NMR shifts in ring substituted silylated phenols dissolved in chloroform and acetone. Magn Reson Chem 2012; 50:128-134. [PMID: 22336952 DOI: 10.1002/mrc.2860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/03/2011] [Accepted: 11/04/2011] [Indexed: 05/31/2023]
Abstract
Infinite dilution (29)Si and (13)C NMR chemical shifts were determined from concentration dependencies of the shifts in dilute chloroform and acetone solutions of para substituted O-silylated phenols, 4-R-C6 H4 -O-SiR'2 R″ (R = Me, MeO, H, F, Cl, NMe2, NH2, and CF3), where the silyl part included groups of different sizes: dimethylsilyl (R' = Me, R″ = H), trimethylsilyl (R' = R″ = Me), tert-butyldimethylsilyl (R' = Me, R″ = CMe3), and tert-butyldiphenylsilyl (R' = C6 H5, R″ = CMe3). Dependencies of silicon and C-1 carbon chemical shifts on Hammett substituent constants are discussed. It is shown that the substituent sensitivity of these chemical shifts is reduced by association with chloroform, the reduction being proportional to the solvent accessible surface of the oxygen atom in the Si-O-C link.
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Affiliation(s)
- Vratislav Blechta
- Institute of Chemical Process Fundamentals of the ASCR, v. v. i., 16502, Prague, 6, Czech Republic
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316
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Li XD, Ding W, Miao FP, Ji NY. Halogenated chamigrane sesquiterpenes from Laurencia okamurae. Magn Reson Chem 2012; 50:174-177. [PMID: 22354806 DOI: 10.1002/mrc.2870] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 11/13/2011] [Accepted: 11/14/2011] [Indexed: 05/31/2023]
Abstract
Three new halogenated chamigrane sesquiterpenes, laurokamin A (1), laurokamin B (2), and laurokamin C (3), and four known halogenated chamigrane sesquiterpenes, 10-bromo-α-chamigrene (4), 10-bromo-β-chamigrene (5), 2,10-dibromo-3-chloro-β-chamigrene (6), and obtusane (7), were isolated from the marine red alga Laurencia okamurae collected from the coast of Rongcheng, China. The structures of these compounds were unambiguously identified by one- and two-dimensional NMR and mass spectroscopic methods. The antimicrobial activity of compounds 1-3 was evaluated.
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Affiliation(s)
- Xiao-Dong Li
- Gansu Agricultural University, Lanzhou, 730070, China; Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
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317
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Noroozi Pesyan N. Isotopic effect on tautomeric behavior of 5-(2,6-disubstituted-aryloxy)-tetrazoles. Magn Reson Chem 2011; 49:592-599. [PMID: 21818780 DOI: 10.1002/mrc.2790] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Revised: 05/28/2011] [Accepted: 06/02/2011] [Indexed: 05/31/2023]
Abstract
Isotopic effect on tautomeric behaviors of the synthesized 5-phenoxy- (1a), 5-(2,6-dimethylphenoxy)-(1b), 5-(2,6-diisopropylphenoxy)-(1c), 5-(2,6-dimethoxyphenoxy)-(1d) and 5-(4-methylphenoxy)-tetrazole (1e) were investigated in DMSO-d6 by adding one drop of D2O. Among 1a-e, 1a, 1d and 1e show small rotational barrier around C5-O1 and O1-C6 while in 1b and 1c there are distinguishable rotational barrier about that bonds. The (1)H NMR spectra of 1b and 1c show slightly different chemical shifts for two methyl and isopropyl groups on those phenyl ring, respectively, while the chemical shifts difference (Δδ) between two methyl and two isopropyl groups were enhanced by adding D2O. The (13)C NMR spectra of 1b show two overlapped singlets for methyl groups after adding D2O. Representatively, the calculations of compound 1c were performed with GAUSSIAN-03 and the rotational barrier about C5-O1 and between isopropyl group and phenyl ring in 1c was calculated with B3LYP/6-31G(d) basis set.
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Affiliation(s)
- Nader Noroozi Pesyan
- Department of Chemistry, Faculty of Science, Urmia University, 57159, Urmia, Iran. ,
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318
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de Oliveira AL, Alves de Oliveira CH, Mairink LM, Pazini F, Menegatti R, Lião LM. Complete assignment of NMR data of 22 phenyl-1H-pyrazoles' derivatives. Magn Reson Chem 2011; 49:537-542. [PMID: 21761453 DOI: 10.1002/mrc.2773] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 04/29/2011] [Accepted: 05/10/2011] [Indexed: 05/31/2023]
Abstract
Complete assignment of (1)H and (13)C NMR chemical shifts and J((1)H/(1)H and (1)H/(19)F) coupling constants for 22 1-phenyl-1H-pyrazoles' derivates were performed using the concerted application of (1)H 1D and (1)H, (13)C 2D gs-HSQC and gs-HMBC experiments. All 1-phenyl-1H-pyrazoles' derivatives were synthesized as described by Finar and co-workers. The formylated 1-phenyl-1H-pyrazoles' derivatives were performed under Duff's conditions.
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Affiliation(s)
- Aline Lima de Oliveira
- Laboratório de Ressonância Magnética Nuclear, Instituto de Química, Universidade Federal de Goiás, CP 131, 74001-970 Goiânia/GO, Brazil.
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319
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Tikunov AP, Johnson CB, Lee H, Stoskopf MK, Macdonald JM. Metabolomic investigations of American oysters using H-NMR spectroscopy. Mar Drugs 2010; 8:2578-96. [PMID: 21116407 PMCID: PMC2992993 DOI: 10.3390/md8102578] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 09/22/2010] [Accepted: 09/30/2010] [Indexed: 02/02/2023] Open
Abstract
The Eastern oyster (Crassostrea virginica) is a useful, robust model marine organism for tissue metabolism studies. Its relatively few organs are easily delineated and there is sufficient understanding of their functions based on classical assays to support interpretation of advanced spectroscopic approaches. Here we apply high-resolution proton nuclear magnetic resonance ((1)H NMR)-based metabolomic analysis to C. virginica to investigate the differences in the metabolic profile of different organ groups, and magnetic resonance imaging (MRI) to non-invasively identify the well separated organs. Metabolites were identified in perchloric acid extracts of three portions of the oyster containing: (1) adductor muscle, (2) stomach and digestive gland, and (3) mantle and gills. Osmolytes dominated the metabolome in all three organ blocks with decreasing concentration as follows: betaine > taurine > proline > glycine > ß-alanine > hypotaurine. Mitochondrial metabolism appeared most pronounced in the adductor muscle with elevated levels of carnitine facilitating ß-oxidation, and ATP, and phosphoarginine synthesis, while glycogen was elevated in the mantle/gills and stomach/digestive gland. A biochemical schematic is presented that relates metabolites to biochemical pathways correlated with physiological organ functions. This study identifies metabolites and corresponding (1)H NMR peak assignments for future NMR-based metabolomic studies in oysters.
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Affiliation(s)
- Andrey P. Tikunov
- Joint Department of Biomedical Engineering, NC State University and UNC Chapel Hill, Chapel Hill, NC 27599, USA; E-Mail: (H.L.)
- Environmental Medicine Consortium, NC State University, 4700 Hillsborough St., Raleigh, NC 27606, USA; E-Mail: (J.M.M.)
| | - Christopher B. Johnson
- Department of Surgery, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA; E-Mail:
| | - Haakil Lee
- Joint Department of Biomedical Engineering, NC State University and UNC Chapel Hill, Chapel Hill, NC 27599, USA; E-Mail: (H.L.)
- Environmental Medicine Consortium, NC State University, 4700 Hillsborough St., Raleigh, NC 27606, USA; E-Mail: (J.M.M.)
| | - Michael K. Stoskopf
- Joint Department of Biomedical Engineering, NC State University and UNC Chapel Hill, Chapel Hill, NC 27599, USA; E-Mail: (H.L.)
- Environmental Medicine Consortium, NC State University, 4700 Hillsborough St., Raleigh, NC 27606, USA; E-Mail: (J.M.M.)
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 4700 Hillsborough St., Raleigh, NC 27606, USA; E-Mail:
| | - Jeffrey M. Macdonald
- Joint Department of Biomedical Engineering, NC State University and UNC Chapel Hill, Chapel Hill, NC 27599, USA; E-Mail: (H.L.)
- Environmental Medicine Consortium, NC State University, 4700 Hillsborough St., Raleigh, NC 27606, USA; E-Mail: (J.M.M.)
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320
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Beccati D, Roy S, Yu F, Gunay NS, Capila I, Lech M, Linhardt RJ, Venkataraman G. Identification of a novel structure in heparin generated by potassium permanganate oxidation. Carbohydr Polym 2010; 82:699-705. [PMID: 25147414 DOI: 10.1016/j.carbpol.2010.05.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The worldwide heparin contamination crisis in 2008 led health authorities to take fundamental steps to better control heparin manufacture, including implementing appropriate analytical and bio-analytical methods to ensure production and release of high quality heparin sodium product. Consequently, there is an increased interest in the identification and structural elucidation of unusually modified structures that may be present in heparin. Our study focuses on the structural elucidation of species that give rise to a signal observed at 2.10 ppm in the N-acetyl region of the 1H NMR spectrum of some pharmaceutical grade heparin preparations. Structural elucidation experiments were carried out using homonuclear (COSY, TOSCY and NOESY) and heteronuclear (HSQC, HSQC-DEPT, HMQC-COSY, HSQC-TOCSY, and HMBC) 2D NMR spectroscopy on both heparin as well as heparin-like model compounds. Our results identify a novel type of oxidative modification of the heparin chain that results from a specific step in the manufacturing process used to prepare heparin.
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Affiliation(s)
- Daniela Beccati
- Momenta Pharmaceuticals, 675 West Kendall Street, Cambridge, MA 02142, USA
| | - Sucharita Roy
- Momenta Pharmaceuticals, 675 West Kendall Street, Cambridge, MA 02142, USA
| | - Fei Yu
- Momenta Pharmaceuticals, 675 West Kendall Street, Cambridge, MA 02142, USA
| | - Nur Sibel Gunay
- Momenta Pharmaceuticals, 675 West Kendall Street, Cambridge, MA 02142, USA
| | - Ishan Capila
- Momenta Pharmaceuticals, 675 West Kendall Street, Cambridge, MA 02142, USA
| | - Miroslaw Lech
- Momenta Pharmaceuticals, 675 West Kendall Street, Cambridge, MA 02142, USA
| | - Robert J Linhardt
- Departments of Chemistry and Chemical Biology, Biology, and Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Center for Biotechnology and Interdisciplinary Studies, 110 8th Street, Troy, NY 12180, USA
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321
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Caligiani A, Palla G, Maietti A, Cirlini M, Brandolini V. 1H NMR fingerprinting of soybean extracts, with emphasis on identification and quantification of isoflavones. Nutrients 2010; 2:280-9. [PMID: 22254020 PMCID: PMC3257648 DOI: 10.3390/nu2030280] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Accepted: 02/24/2010] [Indexed: 11/17/2022] Open
Abstract
1H NMR spectra were recorded of methanolic extracts of seven soybean varieties (Glycine max.), cultivated using traditional and organic farming techniques. It was possible to identify signals belonging to the groups of amino acids, carbohydrates, organic acids and aromatic substances in the spectra. In the aromatic zone, the isoflavone signals were of particular interest: genistein, daidzein, genistin, daidzin, malonylgenistin, acetylgenistin, malonyldaidzin signals were assigned and these compounds were quantified, resulting in accordance with published data, and further demonstrating the potential of the NMR technique in food science.
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Affiliation(s)
- Augusta Caligiani
- Dipartimento di Chimica Organica e Industriale, Università di Parma, Via Usberti 17A, 43100-Parma, Italy; (G.P.); (M.C.)
| | - Gerardo Palla
- Dipartimento di Chimica Organica e Industriale, Università di Parma, Via Usberti 17A, 43100-Parma, Italy; (G.P.); (M.C.)
| | - Annalisa Maietti
- Dipartimento di Scienze Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17/19, 44100 Ferrara, Italy; (A.M.); (V.B.)
| | - Martina Cirlini
- Dipartimento di Chimica Organica e Industriale, Università di Parma, Via Usberti 17A, 43100-Parma, Italy; (G.P.); (M.C.)
| | - Vincenzo Brandolini
- Dipartimento di Scienze Farmaceutiche, Università di Ferrara, Via Fossato di Mortara 17/19, 44100 Ferrara, Italy; (A.M.); (V.B.)
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322
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Andersson M, Hietala S, Tenhu H, Maunu SL. Polystyrene latex particles coated with crosslinked poly(N-isopropylacrylamide). Colloid Polym Sci 2006; 284:1255-1263. [PMID: 24058235 PMCID: PMC3776270 DOI: 10.1007/s00396-006-1470-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Accepted: 02/09/2006] [Indexed: 11/05/2022]
Abstract
Thermoresponsive colloidal particles were prepared by seeded precipitation polymerization of N-isopropylacrylamide (NIPAM) in the presence of a crosslinking monomer, N,N-methylenebisacrylamide (MBA), using polystyrene latex particles (ca. 50 nm in diameter) as seeds in aqueous dispersion. Phase transitions of the prepared poly(N-isopropylacrylamide), PNIPAM, shells on polystyrene cores were studied in comparison to colloidal PNIPAM microgel particles, in H2O and/or in D2O by dynamic light scattering, microcalorimetry and by 1H NMR spectroscopy including the measurements of spin-lattice (T1) and spin-spin (T2) relaxation times for the protons of PNIPAM. As expected, the seed particles grew in hydrodynamic size during the crosslinking polymerization of NIPAM, and a larger NIPAM to seed mass ratio in the polymerization batch led to a larger increase of particle size indicating a product coated with a thicker PNIPAM shell. Broader microcalorimetric endotherms of dehydration were observed for crosslinked PNIPAM on the solid cores compared to the PNIPAM microgels and also an increase of the transition temperature was observed. The calorimetric results were complemented by the NMR spectroscopy data of the 1H-signal intensities upon heating in D2O, showing that the phase transition of crosslinked PNIPAM on polystyrene core shifts towards higher temperatures when compared to the microgels, and also that the temperature range of the transition is broader.
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Affiliation(s)
- Mirja Andersson
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, PB 55, Helsinki, 00014 Finland
| | - Sami Hietala
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, PB 55, Helsinki, 00014 Finland
| | - Heikki Tenhu
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, PB 55, Helsinki, 00014 Finland
| | - Sirkka Liisa Maunu
- Laboratory of Polymer Chemistry, Department of Chemistry, University of Helsinki, PB 55, Helsinki, 00014 Finland
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323
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Kabir-Ud-Din, Fatma W, Khan ZA. A 1H NMR study of 1,4-bis( N-hexadecyl- N, N-dimethylammonium)butane dibromide/sodium anthranilate system: spherical to rod-shaped transition. Colloid Polym Sci 2006; 284:1339-44. [PMID: 24058245 DOI: 10.1007/s00396-005-1417-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2005] [Accepted: 08/12/2005] [Indexed: 11/20/2022]
Abstract
The effect of addition of sodium anthranilate to 5 mM micellar solutions of gemini surfactant 1,4-bis(N-hexadecyl-N,N-dimethylammonium)butane dibromide is investigated by 1H NMR. The solubilization site of anthranilate anion near the micellar surface is inferred. In the micelles, the An− ions intercalate among the surfactant headgroups producing morphological changes.
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