52800-47-2Relevant articles and documents
BIOMARKER PANEL TARGETED TO DISEASES DUE TO MULTIFACTORIAL ONTOLOGY OF GLYCOCALYX DISRUPTION
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, (2021/04/02)
The present disclosure provides biomarkers useful as companion diagnostics for detecting glycocalyx-based disease that is amenable to treatment using compounds designed for improving the condition of the glycocalyx and/or reducing inflammation and/or oxidative damage, as well as related compositions, kits, and methods.
Synthesis of photochromic benzopyrans annulated by 15(18)-crown-5(6) ether
Paramonov,Fedorova,Perevalov,Lokshin,Khodorkovsky
scheme or table, p. 2381 - 2384 (2010/02/16)
The reaction of hydroxy-substituted benzo-15(18)-crown-5(6) ether or benzo-18-crown-6 ether with β-phenylcinnamaldehyde in the presence of titanium tetraethoxide yielded crown-annulated 2,2-diphenylbenzopyrans. The compounds are photochromic, and the spectral characteristics of their colored form are unusual for this class of chromenes.
Synthesis and Characterization of Crowned 1,4-Benzoquinones as Ionophore-Dienophile (Redox) Combined Systems: Double Interaction with Catecholamines and Tryptamine
Hayakawa, Kenji,Kido, Keiko,Kanematsu, Ken
, p. 511 - 520 (2007/10/02)
The crowned 1,4-benzoquinones (1) (15-crown-5) and (2) (18-crown-6) have been synthesized from pyrogallol (3) by: (1) the selective monobenzylation (4); (2) crown ether formation using a pyrocatechols (5) and (6); (3) debenzylation (7) and (8); and (4) oxidation to 1,4-benzoquinones.Both compounds (1) and (2) underwent smooth Diels-Alder reactions with cyclopentadiene (25 deg C), thebaine (80 deg C), and buta-1,3-diene (BF3*Et2O, 0 deg C).The cyclopentadiene adducts (11) and (12) were photochemically transformed into the cage compounds (13) and (14), while the thebaine adducts (15) and (16) were smoothly converted into the hydroquinone derivatives (17) and (18) by silicic acid.The butadiene adducts (19) and (20) were transformed into the crowned naphthoquinones (23) and (24) in high yields.The redox potentials of these crowned quinones in the presence of alkali-metal ions were studied by cyclic voltammetry.The specific interaction between compound (2) and tryptamine, dopamine, and homoveratrylamine via ion-binding and charge-transfer complex formation was evidenced by u.v. spectroscopic studies.