532-11-6Relevant articles and documents
Gallic acid hydrogen sulfide derivative and preparation method and medical application thereof
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Paragraph 0063-0066, (2021/03/31)
The invention discloses a gallic acid hydrogen sulfide derivative and a preparation method and medical application thereof. The general formula of the gallic acid hydrogen sulfide derivative is A-Y-X,and A is gallic acid; Y is -C (O) O-, -C (O) NH-, -C (O) OC (O)-, -C (O) NHCH2 C (O)- or is absent, and when Y is absent, the compound is A-X; X is a moiety capable of releasing hydrogen sulfide alone or in combination with A. Compared with gallic acid and existing classic non-steroidal anti-inflammatory drugs, the gallic acid hydrogen sulfide derivative has the advantages that the anti-inflammatory activity is equivalent or enhanced, the side effects of gastrointestinal tracts and cardiovascular diseases are weakened, and the gallic acid hydrogen sulfide derivative has high anti-tumor activity and good cardiovascular and neuroprotective effects.
Synthesis of Dithiolethiones and Identification of Potential Neuroprotective Agents via Activation of Nrf2-Driven Antioxidant Enzymes
Bai, Feifei,Fang, Jianguo,Song, Zi-Long,Zhang, Baoxin
, p. 2214 - 2231 (2020/03/06)
Oxidative stress is implicated in the pathogenesis of a wide variety of neurodegenerative disorders, and accordingly, dietary supplement of exogenous antioxidants or/and upregulation of the endogenous antioxidant defense system are promising for therapeutic intervention or chemoprevention of neurodegenerative diseases. Nrf2, a master regulator of the cellular antioxidant machinery, cardinally participates in the transcription of cytoprotective genes against oxidative/electrophilic stresses. Herein, we report the synthesis of 59 structurally diverse dithiolethiones and evaluation of their neuroprotection against 6-hydroxydopamine-or H2O2-induced oxidative damages in PC12 cells, a neuron-like rat pheochromocytoma cell line. Initial screening identified compounds 10 and 11 having low cytotoxicity but conferring remarkable protection on PC12 cells from oxidative-mediated damages. Further studies demonstrated that both compounds upregulated a battery of antioxidant genes as well as corresponding genes' products. Significantly, silence of Nrf2 expression abolishes cytoprotection of 10 and 11, indicating targeting Nrf2 activation is pivotal for their cellular functions. Taken together, the two lead compounds discovered here with potent neuroprotective functions against oxidative stress via Nrf2 activation merit further development as therapeutic or chemopreventive candidates for neurodegenerative disorders.
Copper-Catalyzed Tandem Sulfuration/Annulation of Propargylamines with Sulfur via C-N Bond Cleavage
Xu, Hong-Hui,Zhang, Xiao-Hong,Zhang, Xing-Guo
, p. 7894 - 7900 (2019/06/27)
Copper-catalyzed aerobic oxidative sulfuration and annulation of propargylamines with elemental sulfur is described. The tandem reaction involves C-N bond cleavage and the formation of multiple C-S bonds, affording 1,2-dithiole-3-thiones in good to excellent yields with good functional group tolerance.