Precursors and formation of pyrithione and other pyridyl-containing sulfur compounds in drumstick onion, Allium stipitatum

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F11%3A00359831" target="_blank" >RIV/60077344:_____/11:00359831 - isvavai.cz</a>
Alternative codes found
RIV/67985858:_____/11:00359831 RIV/60076658:12220/11:43881940
Result on the web
<a href="http://dx.doi.org/10.1021/jf200704n" target="_blank" >http://dx.doi.org/10.1021/jf200704n</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jf200704n" target="_blank" >10.1021/jf200704n</a>

Result language
angličtina
Original language name
Precursors and formation of pyrithione and other pyridyl-containing sulfur compounds in drumstick onion, Allium stipitatum
Original language description
Two novel, cysteine derivatives were isolated from the bulbs of Allium stipitatum (Allium sub) and shown to be S-(2-pyridyl)cysteine N-oxide and S-(2-pyridyl) glutathione N-oxide. The former compound is the first example of a naturally occurring alliinase substrate that contains an N-oxide functionality instead of the S-oxide group. In addition, S-methylcysteine S-oxide (methiin) and S-methyl thiomethyl)cysteine 4-oxide (marasmin) were found in the bulbs. The alliinase-mediated formation of pyridyl-containing compounds following disruption of A. stipitatum bulbs was studied by a combination of HPLC-MS, HPLC-PDA, DART-MS, and NMR techniques. No pyridyl-containing thiosulfinates are present in homogenized bulbs. Instead, various pyridine N-oxides such asN-hydroxypyridine-2(1H)-thione (pyrithione), 2-(methyldithio)pyridine N-oxide, 2-(methylthio) methyldithio]pyridine N-oxide, di(2-pyridyl) disulfide N-oxide, and di(2-pyridyl) disulfide N,N0-dioxide are reported.
Czech name
—
Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CE - Biochemistry
OECD FORD branch
—

Project
<a href="/en/project/IAA400720706" target="_blank" >IAA400720706: Structure of silyl moieties through J(29Si-13C) couplings as determined by triple {1H, 13C}29Si NMR experiments</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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