Výsledky vyhledávání - "J. J. Cappon"

Synthesis of specifically stable-isotope-labeled l-proline via L-glutamic acid

Autor: Johan Lugtenburg, Jan Raap, J. J. Cappon, P. J. E. Verdegem, G. A. M. Van Der Walle

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 111:517-523

(3,4-13C2)-L-proline and (15N)-L-proline were prepared from the correspondingly labeled L-glumatic acids via a single scheme in high yield and on a gram scale. The synthetic route is based on the ring closure of L-glutamic acid to L-5-oxoproline and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c58b46aca3c859b3cd707f2472894706
https://doi.org/10.1002/recl.19921111204

Zobrazit plný text záznamu

Synthesis of L-histidine specifically labelled with stable isotopes

Autor: R. J. H. Luiten, K. D. Witters, Jan Raap, Johan Lugtenburg, J. Baart, P. J. E. Verdegem, A. C. Hoek, J. J. Cappon

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 113:318-328

(2′-13C)-, (1′-15N)- and (3′-15N)-L-Histidine were prepared according to a synthetic scheme that allows the 13C or 15N labelling of all carbon and nitrogen positions or any combination of positions. A 1,5-disubstituted imidazole ring was constr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::01509808e545e2f7309cadcebfb592eb
https://doi.org/10.1002/recl.19941130603

Zobrazit plný text záznamu

Chemo-enzymatic synthesis of specifically stable-isotope labelledL-glutamic acid and 2-oxoglutaric acid

Autor: J. Baart, Johan Lugtenburg, Jan Raap, G. A. M. van der Walk, J. J. Cappon

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 110:158-166

(3-13C)-, (4-13C)-, (5-13C) and (3,4-13C2)-2-oxoglutaric acid were prepared starting from the simple 13C-enriched compounds: ethyl bromoacetate and paraformaldehyde, via a single reaction scheme on the gram scale in high yield. This reaction scheme a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e4c5d66b63b82275a2d9cb145045102d
https://doi.org/10.1002/recl.19911100505

Zobrazit plný text záznamu

Synthesis of novel morphinan peptides based on ethenoisomorphinans and enkephalin residues containing L- and D-phenylalanine; conformational analysis and preliminary pharmacology (Chemistry of opium alkaloids, Part XXXIII)

Autor: T. S. Lie, J. J. Cappon, Leendert Maat

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 109:413-418

The morphinan peptides N-(4,5α-epoxy-3,6-dihydroxy-17-methyl-6α,14α-ethenoisomorphinan-7α-carbonyl)-L-phenylalanine ethyl ester (4), N-(4,5α-epoxy-3,6-dihydroxy-17-methyl-6α,14α-ethenoisomorphinan-7α-carbonyl)-D-phenylalanine ethyl ester (5)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6545d6ed67765ffb5ad1ecb0f1ade9f
https://doi.org/10.1002/recl.19901090704

Zobrazit plný text záznamu

Hydrogen Bonds in Ethenoisomorphinan-7α-Carboxamides Studied by Molecular Modelling (Chemistry of Opium Alkaloids, Part XXXIV

Autor: J. T. M. Linders, J. J. Cappon, Leendert Maat

Publikováno v: Bulletin des Sociétés Chimiques Belges. 99:849-856

Within the scope of the study of structure-activity relationships of opioids, we examined some conformational aspects of the rotation of the 7α-substituent in ethenoisomorphinan peptides. Using molecular mechanics (MMX88) we have determined the rela

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0543d0d6a26e7c063ad4ba0ee449430e
https://doi.org/10.1002/bscb.19900991011

Zobrazit plný text záznamu

ChemInform Abstract: Structure of N-(3,6-Dimethoxy-17-methyl-4,5-epoxy-6,14α-etheno-7. alpha.-isomorphinanylcarbonyl)-L-phenylalanine Ethyl Ester Hydrochloride

Autor: T. S. Lie, J. J. Cappon, Leendert Maat, A. L. Spek

Publikováno v: ChemInform. 22

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbef7d37fb9f32e1770674d1b64e88d7
https://doi.org/10.1002/chin.199114276

Zobrazit plný text záznamu

ChemInform Abstract: Chemoenzymatic Synthesis of Specifically Stable-Isotope Labelled L- Glutamic Acid, L-Glutamine and L-Proline

Autor: G. A. M. Van Der Walle, J. Baart, Johan Lugtenburg, J. J. Cappon, Jan Raap, P. J. E. Verdegem

Publikováno v: ChemInform. 24

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::17c94428bb38a99fc2a7e19c297024fb
https://doi.org/10.1002/chin.199313261

Zobrazit plný text záznamu

Structure of N-(3,6-dimethoxy-17-methyl-4,5-epoxy-6,14α-etheno-7α-isomorphinanylcarbonyl)-L-phenylalanine ethyl ester hydrochloride

Autor: Leendert Maat, J. J. Cappon, T. S. Lie, A. L. Spek

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 46:2384-2387

C 33 H 39 N 2 O 6 + .Cl − cristallise dans P2 1 2 1 2 1 avec a=10,678, b=11,365, c=24,664 A, Z=4; affinement jusqu'a R=0,052. Le residu phenylalanine n'a pas d'effet significatif sur la geometrie du squelette ethenoisomorphinane. L'hydrogene de l'a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f02889945254eebb5e191e0956fe2a11
https://doi.org/10.1107/s0108270190002517

Zobrazit plný text záznamu

15N MAS NMR Spectroscopy of [π-15N] and [τ-15N] histidine labelled bacterial photosynthetic reaction centres

Autor: Jan Raap, G.J. Boender, Arnold J. Hoff, H. J. M. de Groot, C. Soede-Huijbregts, J. J. Cappon, Johan Lugtenburg, Peter Gast

Publikováno v: Photosynthesis: Mechanisms and Effects ISBN: 9780792355472

A characteristic feature of the bacterial reaction centre (RC) complex is a strictly apolar transmembrane helical region holding the cofactor branches, with each transmembrane helix containing a segment of at least 16 nonpolar residues (1). It is enc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4e9f80e336ee1f1f94a9132c1f4af1fb
https://doi.org/10.1007/978-94-011-3953-3_178

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání