Results 111 to 120 of about 1,791 (139)
Some of the next articles are maybe not open access.
Analysis and characterization of sulfane sulfur
Analytical BiochemistryIn the late 1970s, sulfane sulfur was defined as sulfur atoms covalently bound only to sulfur atoms. However, this definition was not generally accepted, as it was slightly vague and difficult to comprehend. Thus, in the early 1990s, it was defined as "bound sulfur," which easily converts to hydrogen sulfide upon reduction with a thiol-reducing agent ...
Shin, Koike, Yuki, Ogasawara
openaire +2 more sources
Organic Letters, 2022
In this work we studied the reactions of benzothiazole sulfones and sulfoxides toward reactive sulfur species. The reaction of thiols with benzothiazole sulfones produces sulfinic acids (RSO2H), which can further react with sulfane sulfurs to form thiosulfonic acids (RSO2SH). This was used to design fluorescent sensors for hydrogen polysulfides.
Shi Xu +7 more
openaire +2 more sources
In this work we studied the reactions of benzothiazole sulfones and sulfoxides toward reactive sulfur species. The reaction of thiols with benzothiazole sulfones produces sulfinic acids (RSO2H), which can further react with sulfane sulfurs to form thiosulfonic acids (RSO2SH). This was used to design fluorescent sensors for hydrogen polysulfides.
Shi Xu +7 more
openaire +2 more sources
Electrophilic sulfhydration of 8-nitro-cGMP involves sulfane sulfur
Org. Biomol. Chem., 2014The complex chemistry taking place between the messenger 8-nitro-cGMP and the gaseous transmitter H 2 S is governed by dioxygen and thiols.
V, Terzić +4 more
openaire +2 more sources
Cross‐Talks Between Sulfane Sulfur and Thiol at a Zinc(II) Site
Chemistry – A European Journal, 2022AbstractTransformations of sulfane sulfur compounds (e. g. organic polysulfides (R−Sn−R, n>2) and elemental sulfur (S8)) play pivotal roles in the biochemical landscape of sulfur, and thus supports signaling activities of H2S. Although a number of previous reports illustrate amine mediated reactions of S8 and thiol (RSH) yielding R−Sn−R, this report
Tuhin Sahana +2 more
openaire +2 more sources
Sensitive Method for Reliable Quantification of Sulfane Sulfur in Biological Samples
Analytical Chemistry, 2019Sulfane sulfur has been recognized as a common cellular component, participating in regulating enzyme activities and signaling pathways. However, the quantification of total sulfane sulfur in biological samples is still a challenge. Here, we developed a method to address the need.
Mingxue Ran +6 more
openaire +2 more sources
Possible involvement of sulfane sulfur in homocysteine-induced atherosclerosis
Medical Hypotheses, 2001Homocysteinemia, first identified as a genetic disease in children in the 1960s, is associated with severe widespread atherosclerosis which causes death (in untreated cases) before the age of 10 years. Elevated blood homocysteine is now recognized as a risk factor for heart disease in the general population.
openaire +2 more sources
Antioxidant effects of sulfane sulfur
Klinická biochemie a metabolismus, 2022R Hyšpler, A Tichá, Z Zadák
openaire +1 more source
Access to Bis(imidazopyridine)sulfanes by Employing Cysteine as a Greener Sulfur Source
The Journal of Organic ChemistryAn efficient and environmentally friendly protocol has been developed for synthesizing bis(imidazopyridine)sulfanes, employing cysteine as sulfur source. This method demonstrates broad substrate scope, accommodating diverse electron-donating and electron-withdrawing functional groups on the imidazopyridine core.
Pallavi Saha +2 more
openaire +2 more sources
Thiotaurine is a sulfane sulfur donor to the biological thiols glutathione and cysteine
Biochimica et Biophysica Acta (BBA) - General SubjectsPersulfide and hydrogen sulfide chemistry is relevant to the prevention of cellular oxidative damage. Thiotaurine is a poorly-studied precursor to the abundant biological molecule taurine and contains a labile sulfane sulfur. Here, reversible reactions of thiotaurine with glutathione or cysteine were investigated to observe formation of persulfides and
openaire +2 more sources
YgaV-mediated sulfane sulfur homeostasis in Escherichia coli
Free Radical Biology and Medicine, 2023Maria Juliana Juncos +5 more
openaire +1 more source