Rational Design and Bioimaging Applications of Highly Selective Fluorescence Probes for Hydrogen Polysulfides
摘要:
Reactive sulfur species have received considerable attention due to their various biological functions. Among these molecules, hydrogen polysulfides (H2Sn, n > 1) are recently suggested to be the actual signaling molecules derived from hydrogen sulfide (H2S). Hydrogen polysulfides may also have their own biosynthetic pathways. The research on H2Sn is rapidly growing. However, the detection of H2Sn is still challenging. In this work we report a H2Sn-mediated benzodithiolone formation under mild conditions. Based on this reaction, specific fluorescent probes for H2Sn are prepared and evaluated. The probe DSP-3 shows good selectivity and sensitivity for H2Sn.
Persulfides are receiving increased attention due to their links to hydrogen sulfide (H2S) and hydrogen polysulfide (H2Sn). Their close analogues selenyl sulfides (RSeSHs), however, have limited literature precedent, and their reactivity and possible role in biology are largely unknown. Here, we devised an acyl selenyl sulfide template to study RSeSH chemistry. Their stability and reactivity toward amines/thiols
由于过硫化物与硫化氢(H 2 S)和多硫化氢(H 2 S n)的联系,因此受到越来越多的关注。然而,它们的紧密类似物硒烯硫化物(RSeSHs)的文献报道有限,而且它们的反应性和在生物学中的可能作用在很大程度上尚不清楚。在这里,我们设计了一个酰基硒基硫醚模板来研究RSeSH化学。研究了它们对胺/硫醇的稳定性和反应性。这些化合物可在不同条件下产生H 2 S或H 2 S 2,表明RSeSH是可能的中间体。
Rational Design and Bioimaging Applications of Highly Selective Fluorescence Probes for Hydrogen Polysulfides
Reactive sulfur species have received considerable attention due to their various biological functions. Among these molecules, hydrogen polysulfides (H2Sn, n > 1) are recently suggested to be the actual signaling molecules derived from hydrogen sulfide (H2S). Hydrogen polysulfides may also have their own biosynthetic pathways. The research on H2Sn is rapidly growing. However, the detection of H2Sn is still challenging. In this work we report a H2Sn-mediated benzodithiolone formation under mild conditions. Based on this reaction, specific fluorescent probes for H2Sn are prepared and evaluated. The probe DSP-3 shows good selectivity and sensitivity for H2Sn.