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Regenerable Radical-Trapping Tellurobistocopherol Antioxidants
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- Poon, Jia-fei (author)
- Uppsala universitet,Organisk kemi
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- Yan, Jiajie (author)
- Uppsala universitet,Organisk kemi
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- Singh, Vijay P. (author)
- Uppsala universitet,Organisk kemi
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- (creator_code:org_t)
- 2016-12-02
- 2016
- English.
- In: Journal of Organic Chemistry. - : American Chemical Society (ACS). - 0022-3263 .- 1520-6904. ; 81:24, s. 12540-12544
- Journal article (peer-reviewed)
Abstract
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- Tellurobistocopherols 9–11 were prepared by lithiation of the corresponding bromotocopherols, reaction with tellurium tetrachloride and reductive workup. Compounds 9–11 quenched linoleic-acid-derived peroxyl radicals much more efficiently than α-tocopherol in a chlorobenzene/water two-phase system. N-Acetylcysteine or tris(2-carboxylethyl)phosphine as co-antioxidants in the aqueous phase could regenerate the tellurobistocopherols and increase their inhibition times. Antioxidant 11 inhibited peroxidation for 7-fold longer than that recorded with α-tocopherol. Thiol consumption in the aqueous phase was monitored and found to be inversely related to the inhibition time.
Subject headings
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
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- art (subject category)
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- Yan, Jiajie
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- Gates, Paul J.
- Engman, Lars
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