Sun, Qi et al. published their research in Journal of the American Chemical Society in 2008 | CAS: 92557-80-7

2,5-Dioxopyrrolidin-1-yl 3′,6′-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-5-carboxylate (cas: 92557-80-7) belongs to benzofurans derivatives.Benzofuran is one of the most significant oxygen-containing heterocycles consisting of fused benzene and furan ring, which are widely presented in various naturally occurring and synthetically active compounds. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.Category: benzofurans

Selective Disruption of Early/Recycling Endosomes: Release of Disulfide-Linked Cargo Mediated by a N-Alkyl-3β-Cholesterylamine-Capped Peptide was written by Sun, Qi;Cai, Sutang;Peterson, Blake R.. And the article was included in Journal of the American Chemical Society in 2008.Category: benzofurans This article mentions the following:

The use of endocytic uptake pathways to deliver poorly permeable mols. into mammalian cells is often plagued by entrapment and degradation of material in late endosomes and lysosomes. As a strategy to prevent the exposure of cargo to these highly hydrolytic membrane-sealed compartments, we synthesized derivatives of the membrane anchor N-alkyl-3β-cholesterylamine that selectively target linked compounds to less hydrolytic early/recycling endosomes. By targeting a pH-dependent membrane-lytic dodecapeptide and a disulfide-linked fluorophore to these compartments in Chinese hamster ovary cells or Jurkat lymphocytes, membranes of early/recycling endosomes were selectively disrupted, resulting in cleavage of the disulfide and escape of the fluorophore into the cytosol and nucleus with low toxicity. The ability of appropriately designed N-alkyl-3β-cholesterylamines to deliver cargo into and release disulfide-linked cargo from relatively nonhydrolytic early/recycling endosomes may be useful for the delivery of a variety of sensitive mols. into living mammalian cells. In the experiment, the researchers used many compounds, for example, 2,5-Dioxopyrrolidin-1-yl 3′,6′-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-5-carboxylate (cas: 92557-80-7Category: benzofurans).

2,5-Dioxopyrrolidin-1-yl 3′,6′-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-5-carboxylate (cas: 92557-80-7) belongs to benzofurans derivatives.Benzofuran is one of the most significant oxygen-containing heterocycles consisting of fused benzene and furan ring, which are widely presented in various naturally occurring and synthetically active compounds. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.Category: benzofurans

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem