Zobrazeno 1 - 10 of 1 215 pro vyhledávání: '"M. Verzele"'
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Constituents of Peppers Part VII. Spectroscopic Structure Elucidation of Piperine and its Isomers
Autor: M. Verzele, R. De Cleyn
Publikováno v: Bulletin des Sociétés Chimiques Belges. 84:435-438
Piperine and its cis-trans isomers isopiperine, chavicine and isochavicine are separated on preparative scale. Their spectral data are recorded and the structures are derived mainly from NMR data obtained at 300 MHz.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0225cc48675e25d3a7e983224944401
https://doi.org/10.1002/bscb.19750840503
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5
The Humulinic Acids Part 1. Isolation and preparation of humulinic acid isomers
Autor: M. Bracke, M. Verzele, M. J. O. Anteunis, F. Alderweireldt
Publikováno v: Bulletin des Sociétés Chimiques Belges. 71:623-633
The isolation and preparation of several humulinic acid isomers named humulinic acid A, B, C and D is reported. They can be obtained by isomerization of the known degradation product of humulone which is the humulinic acid A of the above series.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d5d5cf6d7b0e44500f690cc0758e962
https://doi.org/10.1002/bscb.19620710916
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6
Halogen Substituted 1,3-Cyclohexanediones I. Reaction of 2,2-dichlorodimedone with bases
Autor: M. Verzele, Niceas Schamp
Publikováno v: Bulletin des Sociétés Chimiques Belges. 73:38-43
The reaction of 2,2-dichlorodimedone with bases gives complex mixtures, but with silver oxide a straightforward reaction leads with high yield to 6,6-dichloro-4,4-dimethyl-5-oxohexanoic acid and/or to 4,4-dimethyl-5-chloroacetyl-2-tetrahydrofuranone.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8554adea20527d37a4cfed505f82219b
https://doi.org/10.1002/bscb.19640730106
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7
Spiro-isohumulones: Isohumulones with a 3-Keto Tetrahydrofurane Moiety
Autor: M. Verzele, M. J. O. Anteunis, L. Maes
Publikováno v: Bulletin des Sociétés Chimiques Belges. 79:103-113
Since 1951 it is known that methanolic alkaline isomerization of humulone produces a mixture of crystalline isomers. This paper shows that the mixture contains the four diastereoisomers with structures 12, 13, 14 and 15 of chart III. It is proposed t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78a4632584ac8ea8b1053cfee7e8520c
https://doi.org/10.1002/bscb.19700790112
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8
The humulinic acids. V. Specific catalytic reductions methyl allohumulinic acid D
Autor: M. J. O. Anteunis, A. Lepoivre, F. Alderweireldt, M. Verzele, M. Bracke
Publikováno v: Bulletin des Sociétés Chimiques Belges. 74:629-636
Methyl allohumulinic acid D (I) was isolated after acid treatment of either humulinic A (HAA) or humulinic acid B (HAB). Some specific reductions on this and other humulinic acids are reported. Dihydromethylhumulinic acid D (IV) is described. A new r
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88fbc7572ce3337a836fd7dee655f1a1
https://doi.org/10.1002/bscb.19650741115
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10
Oxidation products of hop bitter acids. Part IX. Six-membered ring products from the oxidation of colupulone
Autor: M. Verzele, M. J. O. Anteunis, R. van Den Bossche
Publikováno v: Bulletin des Sociétés Chimiques Belges. 83:277-283
Air oxidation of colupulone in iso-octane solution produces a comples mixture, separation of which by Counter-Current-Distribution with the two phase system iso-octane/buffer pH : 7.00 gives four 1,2-dioxolane peroxides (III, IV, V and VI of figure 1
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f055db2fbcdaa57a28498bd673653f00
https://doi.org/10.1002/bscb.19740830710
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