Výsledky vyhledávání - "F. J. H. M. Jansen"

Synthesis and characterization of all-E (12,12′-13C2)-, (13,13′-13C2)-, (14,14′-13C2)-, (15,15′-13C2)- and (20,20′-13C2)astaxanthin

Autor: D. Schmitt, M. Kwestro, Johan Lugtenburg, F. J. H. M. Jansen

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 113:552-562

The all-E isomers of (12,12′-13C2)-, (13,13′-13C2)-, (14,14′-13C2)-, (15,15′-13C2)- and (20,20′-13C2)astaxanthin were prepared by total synthesis starting from commercially available 99% 13C-enriched acetonitrile, acetic acid and methyl iod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b99442871c0474ec5da6eb905319eaf2
https://doi.org/10.1002/recl.19941131205

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Chemo-enzymatic synthesis and characterization of L-tryptophans selectively 13C-enriched or hydroxylated in the six-membered ring using transformed Escherichia coli cells

Autor: A. T. J. W. de Goede, A. U. Baldew, F. J. H. M. Jansen, E. M. M. van den Berg, Johan Lugtenburg

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 109:287-297

L-(3a-13C)- And L-(6-13C)tryptophan have been synthesized from simple labelled compounds via a single reaction scheme based on the conversion of 1,3-cyclohexanedione into indole. The labelled indoles have been converted in one step into the correspon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d7e20c02a757bf8251f1d6f1896b2b2f
https://doi.org/10.1002/recl.19901090405

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Spectroscopic and Photochemical Properties of Open-Chain Carotenoids

Autor: Ineke van der Hoef, Jesusa S. Josue, Ronald L. Christensen, Johan Lugtenburg, Gary Wiederrecht, F. J. H. M. Jansen, James A. Bautista, Harry A. Frank

Publikováno v: The Journal of Physical Chemistry B. 106:2083-2092

The spectroscopic properties of open-chain, all-trans-C{sub 30} carotenoids having seven, eight and nine {pi}-electron conjugated carbon-carbon double bonds were studied using steady-state absorption, fluorescence, fluorescence excitation and time-re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34357f36ea8a4f19c78655482f22006c
https://doi.org/10.1021/jp013321l

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Synthesis and Characterization ofall-E-(4,4′-13C2)-Astaxanthin Strategies for Labelling the C15-End Groups of Carotenoids

Autor: Johan Lugtenburg, F. J. H. M. Jansen

Publikováno v: European Journal of Organic Chemistry. 2000:829-836

The all-E isomer of (4,4′-13C2)astaxanthin (1a) has been prepared by total synthesis starting from commercially available 99% 13C enriched acetonitrile. The labelled astaxanthin was obtained in high purity and with high isotope incorporation. For t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::500bee01294526d28d35984da4cdd0ec
https://doi.org/10.1002/(sici)1099-0690(200003)2000:5<829::aid-ejoc829>3.0.co

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S1 and S2 States of Apo- and Diapocarotenes

Autor: Joanna Duncan, Johan Lugtenburg, Beverly DeCoster, Ronald L. Christensen, Laurie Gallagher, Michelle Goyette, F. J. H. M. Jansen, Ineke van der Hoef

Publikováno v: The Journal of Physical Chemistry A. 103:2399-2407

A series of apocarotenes with 5 to 11 conjugated double bonds were synthesized and all-trans isomers were isolated using HPLC techniques. Absorption, fluorescence, and fluorescence excitation spectra were obtained in 77 K glasses. As previously noted

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e618c57ce709e4bf684f70a31189ad1
https://doi.org/10.1021/jp983946s

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Synthesis of 13C-labeled carotenoids and retinoids

Autor: Michiel A. Verhoeven, Menno C. F. Monnee, A. A. C. van Wijk, F. J. H. M. Jansen, Alain F. L. Creemers, P. J. E. Verdegem, Johan Lugtenburg

Publikováno v: Pure and Applied Chemistry. 71:2245-2251

A three-part strategy has been developed to study molecular interactions in biological systems at the atomic level. First, isotopically labeled carotenoids and retinoids are prepared by organic total synthetic schemes with labels at predetermined ato

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60fa14c417ef99be6c6f63287dd4ec06
https://doi.org/10.1351/pac199971122245

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Semiempirical and Raman spectroscopic studies of carotenoids

Autor: J. C. Merlin, Johan Lugtenburg, Jean-Paul Cornard, F. J. H. M. Jansen, George Britton, R. J. Weesie

Publikováno v: Biospectroscopy. 5:19-33

Semiempirical AM1 calculations have been carried out for β-carotene and the three xanthophylls (zeaxanthin, canthaxanthin, and astaxanthin) containing oxygen functions (hydroxy/keto groups) found in the majority of natural pigment. The fully optimiz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::543dbd0622cc96e2ac0e89352688c71f
https://doi.org/10.1002/(sici)1520-6343(1999)5:1<19::aid-bspy4>3.0.co

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Resonance Raman spectroscopy and quantum chemical modeling studies of protein-astaxanthin interactions in ?-crustacyanin (major blue carotenoprotein complex in carapace of lobster,Homarus gammarus)

Autor: H. J. M. de Groot, Johan Lugtenburg, R. J. Weesie, J. C. Merlin, Jean-Paul Cornard, F. J. H. M. Jansen, George Britton

Publikováno v: Biospectroscopy
Biospectroscopy, 5(6), 358-370

Resonance Raman spectroscopy and quantum chemical calculations were used to investigate the molecular origin of the large redshift assumed by the electronic absorption spectrum of astaxanthin in alpha-crustacyanin, the major blue carotenoprotein from

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::946f0ea494820fb3d2cc7bd90376645f
https://doi.org/10.1002/(sici)1520-6343(1999)5:6<358::aid-bspy5>3.0.co

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Mechanism of Energy Transfer from Carotenoids to Bacteriochlorophyll: Light-Harvesting by Carotenoids Having Different Extents of π-Electron Conjugation Incorporated into the B850 Antenna Complex from the Carotenoidless Bacterium Rhodobacter sphaeroides R-26.1

Autor: Harry A. Frank, Agnes Cua, Johan Lugtenburg, Ruel Z. B. Desamero, Veeradej Chynwat, Ineke van der Hoef, F. J. H. M. Jansen, Michael R. Wasielewski, David F. Bocian, David Gosztola

Publikováno v: The Journal of Physical Chemistry B. 102:8151-8162

Spheroidene and a series of spheroidene analogues with extents of π-electron conjugation ranging from 7 to 13 carbon−carbon double bonds were incorporated into the B850 light-harvesting complex of Rhodobacter sphaeroides R-26.1. The structures and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::62352cdadbc8c6982c4ce52e15ae5fcb
https://doi.org/10.1021/jp980911j

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[Untitled]

Autor: Harry A. Frank, F. J. H. M. Jansen, Veeradej Chynwat, David J. Gosztola, James A. Bautista, Michael R. Wasielewski, Johan Lugtenburg, Agnes Cua

Publikováno v: Photosynthesis Research. 55:49-65

The spectroscopic and photochemical properties of the synthetic carotenoid, locked-15,15′-cis-spheroidene, were studied by absorption, fluorescence, circular dichroism, fast transient absorption and electron spin resonance spectroscopies in solutio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc99c89b74a944123a6c2e4210875a30
https://doi.org/10.1023/a:1005955425420

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