Zobrazeno 1 - 10 of 230 pro vyhledávání: '"K. Weinges"'
4
Isolation and identification of (—)-gallocatechin gallate and circular dichroism of green tea flavanols
Autor: O. Korver, D.J. Frost, J. de Bruijn, C. K. Wilkins, K. Weinges
Publikováno v: Journal of the Science of Food and Agriculture. 22:480-484
Partly raceme (—)-gallocatechin gallate was isolated from green tea by counter-current distributins and column chromatography on Sephadex LH-20. The structure was proven by mass spectroscopy of the pertrimethylsilyl ether and by n.m.r. and circular
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42c630810820da4ed5e7e49e911f36b6
https://doi.org/10.1002/jsfa.2740220913
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5
The occurrence of catechins in fruits
Autor: K. Weinges
Publikováno v: Phytochemistry. 3:263-266
(+)-Catechin and (−)-epicatechin have been isolated from the fruit of nine plant species using perlon powder columns. During the course of this study it was found that fresh pods of Gleditschia triacanthos contain not only (+)-catechin and a conden
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::428502a34f4b00c2c3d25328a00e0ce3
https://doi.org/10.1016/s0031-9422(00)88049-8
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10
Systematik und nomenklatur der lignane
Autor: K. Freudenberg, K. Weinges
Publikováno v: Tetrahedron. 15:115-128
A system of notation for the lignans and isolignans is proposed. The name cyclolignans instead of isolignans has been suggested. The notation is based on the oxygen equivalents in the benzene rings and side chains. The basic hydrocarbons are designat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51730466b934a2d98a05fee633a26ab0
https://doi.org/10.1016/0040-4020(61)80015-x
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