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- W2000202145 abstract "The chemical syntheses of cysteine (CYS) and glutathione (GSH) mixed -disulfide conjugates (CySSR, GSSR, respectively) of mercapto residues representing most of the R groups of thiosulfinates (R = methyl, ethyl, propyl, and allyl) are described. Gram-scale conjugates were prepared as >98% pure preparations, with 80% reaction yield for each of the two seminal synthesis steps, with structures confirmed by 1H NMR and high-resolution MS analyses. These conjugates are derivatives of thiosulfinates that may be evolved in processed foods, in the digestive tract, and through in vivo metabolism. The prepared conjugates were found to be able to induce quinone reductase (QR, a representative phase II enzyme) in murine hepatoma cells (Hepa 1c1c7) and to inhibit nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated macrophage cells (RAW 264.7), indicating they have potential cancer preventive and anti-inflammatory activities. Among the prepared conjugates, the allyl conjugates of CYS and GSH, S-allylmercaptocysteine (CySSA) and S-allylmercaptoglutathione (GSSA), showed the most potent activity regarding QR induction and NO production inhibition. The conjugates with saturated R groups were also active and conferred biological activity as cystine and oxidized glutathione exhibited no effects in these cellular assays." @default.
- W2000202145 created "2016-06-24" @default.
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- W2000202145 date "2010-01-20" @default.
- W2000202145 modified "2023-09-27" @default.
- W2000202145 title "Cysteine and Glutathione Mixed-Disulfide Conjugates of Thiosulfinates: Chemical Synthesis and Biological Activities" @default.
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- W2000202145 doi "https://doi.org/10.1021/jf9029354" @default.
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