Results 41 to 50 of about 7,454 (221)
9-(2-Hydroxy-6-oxocyclohex-1-en-1-yl)-2,3,4,9-tetrahydro-1H-xanthen-1-one
Acta Crystallographica Section E, 2013 In the xanthene ring system in the title compound, C19H18O4, the 4H-pyran ring has a maximum deviation of 0.110 (2) Å from planarity and the cyclohexene ring exhibits a puckered conformation [puckering parameters QT = 0.452 (3 ...
Shaaban K. Mohamed +4 more
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Applied Sciences, 2020 Metal chelators can be potentially employed in the treatment of various diseases, ranging from metal overload to neoplastic conditions. Some xanthene derivatives were previously reported to complex metals.
Přemysl Mladěnka +10 more
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Synthesis of xanthene derivatives based on α, αâ²-bis (substituted-benzylidene) cycloalkanones using tangstophosphoric acid under solvent-free conditions [PDF]
شیمی کاربردی روز, 2014 Tangstophosphoric acid (H3PW12O40) as an acidic catalyst has been used for facile synthesis of xanthene derivatives by the reaction of α,αâ²-bis (substituted-benzylidene) cycloalkanones and dimedone in solvent-free conditions.
الهام تبریزیان +1 more
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Dialkyl Ethers and Sacrificial Zinc: Oxide Synthons for Calcium tert‐Butoxide Formation
Angewandte Chemie, EarlyView.When treated with dialkyl ethers, [(BDI)Ca‐μ‐H‐Zn(t‐Bu)2(η6‐C7H8)] (BDI = HC{C(Me)NDipp}2 initiates a sequence of twofold ether dealkylation and oxide sequestration as tert‐butoxide in a process predicated on a combination of extreme basicity and a cooperative redox process administered by the dissimilar constituent metals. (Generative AI (ChatGPT) was
Kyle G. Pearce +3 more
wiley +2 more sources
Multicomponent synthesis of novel azo-linked 9-Aryl-1H-xanthene-1,8(2H)-diones using ionic liquid [BDBDMIm]HSO4 [PDF]
شیمی کاربردی روز, 2019 The synthesis of ten novel azo dyes derived from 9-Aryl-1H-xanthene-1,8(2H)-dione derivatives from one equivalent of azo-linked salicylaldehydes and two equivalent of dimedone in the presence of 3,3'-(butane-1,4-diyl)bis(1,2-dimethyl-1H-imidazol-3-ium ...
mohammad nikpassand, leila Zare Fekri
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Angewandte Chemie, EarlyView.A meso‐carboxamide‐substituted BODIPY fluorescent probe reports myeloperoxidase (MPO) activity via electrophilic chlorination by MPO‐derived HOCl, generating a highly emissive chlorinated product with a ca. 40 nm bathochromic shift. Applications in quantitative MPO assays, cellular imaging of MPO‐derived HOCl, redox‐dependent discrimination of cancer ...
Siyoung Cho +3 more
wiley +2 more sources
Phosphonated Xanthene Fluorophores for Live-Cell Imaging Applications [PDF]
, 2022 Since the original synthesis of fluorescein in 1871, the use of xanthene fluorophores has remained ubiquitous in biology, medicine, and chemical biology.
Turnbull, Joshua Luke
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Synthesis of new xanthene derivatives [PDF]
, 2013 Xanthene dyes, including fluorescein, are a well-known class of fluorescent dyes, which have widespread applications in natural sciences. The synthesis of xanthene derivatives via acid catalyzed condensation of substituted phenols with phthalic ...
Kotaskova, Michaela
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Synthesis, resolution and crystal structures of two enantiomeric rhodamine derivatives
Acta Crystallographica Section E: Crystallographic Communications, 2017 The title molecule, rac-6′-bromo-3′-diethylamino-3H-spiro[2-benzofuran-1,9′-xanthen]-3-one, C24H20BrNO3, was synthesized and the two enantiomers which formed were separated. The structures of all three compounds were determined and compared with those of
Clifton J. Stephenson +6 more
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Results in Chemistry, 2023 In the current research, we designed and synthesized various derivatives of 9-aryl-1,8-dioxo-octahydroxanthene using flow chemistry technique and explored in vitro study for antileishmanial activity against the promastigote as well as amastigote form of ...
Kamlesh Lodha +9 more
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