Results 21 to 30 of about 7,454 (221)

10a-Hy-droxy-9-[2-(tri-fluoro-meth-yl)phen-yl]-3,4,5,6,7,8a,9,10a-octa-hydro-1<i>H</i>-xanthene-1,8(2<i>H</i>)-dione. [PDF]

IUCrdata
The title compound, C20H19F3O4, crystallizes with two independent molecules with similar geometry. In both molecules the tetrahydropyran, cyclohexene and cyclohexane rings of the xanthene moiety adopt half-chair, half-boat and chair conformations ...
Mominuddin M, Roy HN, Zangrando E, Hasan I, Karmaker PG.   +4 more
europepmc   +2 more sources

A long-wavelength xanthene dye for photoacoustic imaging [PDF]

, 2022
Photoacoustic (PA) imaging is a powerful biomedical imaging modality. We designed KeTMR and KeJuR, two xanthene-based dyes that readily obtained through a 2-step synthetic route.
Viranga, Wimalasiri, Yuan, Fang, Xinqi, Zhou, Evan, Miller, Cliff, Stains   +4 more
core   +2 more sources

Functionalized Nano Clinoptilolite; Novel and Efficient Nano Catalyst for Green Synthesis of Xanthene Dione Derivatives under Solvent Free Conditions [PDF]

شیمی کاربردی روز, 2022
In this research, a novel, low-cost and environmentally friendly nano zeolite clinoptilolite as a catalyst with high thermal stability and reusability was synthesized by an efficient method.
Khadijeh Rabiei, Zahra Mostafapour
doaj   +1 more source

Virtual screening of marine coumarins and xanthenes identifies novel acid-suppressive leads targeting histamine H₂ receptor and gastric proton pump. [PDF]

Biomol Biomed
Marine natural products represent a diverse collection of structurally distinct metabolites, many of which have untapped therapeutic potential. This study screened 161 marine-derived coumarin and xanthene compounds for their binding affinity to the ...
Osmanović A, Salihović M, Mehmedović A, Turalić A, Veljović E, Pazalja M, Carradori S, Špirtović-Halilović S.   +7 more
europepmc   +2 more sources

N-[6-(Dimethylamino)-9-phenyl-3H-telluroxanthen-3-ylidene]-N-methylmethanaminium hexafluorophosphate monoclinic polymorph

IUCrData, 2021
The title compound C23H23N2Te+·PF6−, is a monoclinic polymorph of the previously reported triclinic structure [Calitree et al. (2007). Organometallics, 26, 6248–6257].
Shea Myers, Patrick Johnson, Jason B. Benedict   +2 more
doaj   +1 more source

2-[(5-Chloro-2-hydroxybenzylidene)amino]-3&#8242;,6&#8242;-bis(diethylamino)spiro[isoindoline-1,9&#8242;-xanthen]-3-one

Acta Crystallographica Section E, 2010
The title compound, C35H35ClN4O3, resulted from a spirolactam ring closure of rhodamine B dye. The xanthene ring system is approximately planar [r.m.s. deviation = 0.050&#8197;(9)&#8197;&#197; for the xanthene ring].
Zhi-hong Xu, Wei-yun Guo, Bo-wei Su, Xu-Ke Shen, Feng-ling Yang   +4 more
doaj   +1 more source

Xanthene-Bridged Cofacial Bisporphyrins

, 2016
The synthesis and characterization of cofacial bisporphyrins juxtaposed by xanthene-bridged pillars are presented. The one-pot preparation of the xanthene dialdehyde avoids the lengthy bridge synthesis accompanying other cofacial porphyrin systems, thus ...
C. K. Chang (2695849), Christopher J. Chang (151940), Daniel G. Nocera (1341363), Yongqi Deng (1720078), Alan F. Heyduk (1558540)   +4 more
core   +2 more sources

3&#8242;,6&#8242;-Bis(ethylamino)-2&#8242;,7&#8242;-dimethyl-2-{[2-[(E)-3,4-methylenedioxybenzylideneamino]ethyl}spiro[isoindoline-1,9&#8242;-xanthen]-3-one

Acta Crystallographica Section E, 2009
The title compound, C36H36N4O4, was prepared as a spirolactam ring formation of the rhodamine dye for comparison with a ring-opened form. The xanthene ring system is approximately planar [r.m.s.
Zhi-Hong Xu, Hong-Sheng Wang, Lian-Ting Tao, Hong-Wei Wang   +3 more
doaj   +1 more source

Xanthene and Xanthone Derivatives as G-Quadruplex Stabilizing Ligands

Molecules, 2013
Following previous studies on anthraquinone and acridine-based G-quadruplex ligands, here we present a study of similar aromatic cores, with the specific aim of increasing G-quadruplex binding and selectivity with respect to duplex DNA.
Alessandro Altieri, Antonello Alvino, Stephan Ohnmacht, Giancarlo Ortaggi, Stephen Neidle, Daniele Nocioni, Marco Franceschin, Armandodoriano Bianco   +7 more
doaj   +1 more source

Crystal structure, Hirshfeld surface and frontier molecular orbital analysis of 9-(3-bromo-4-hydroxy-5-methoxyphenyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione

Acta Crystallographica Section E: Crystallographic Communications, 2021
In the fused ring system of the title compound, C24H27BrO5, the mean plane and maximum deviations of the central pyran ring are 0.0384 (2) and 0.0733 (2) Å, respectively.
N. Suresh Babu, V. Sughanya, D. Praveenkumar, M. L. Sundararajan   +3 more
doaj   +1 more source