- Rational design of a new fluorescent 'ON/OFF' xanthene dye for phosphate detection in live cells
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A new fluorescein derivative with ON/OFF features, 9-[1-(4-tert-butyl-2- methoxyphenyl)]-6-hydroxy-3H-xanthen-3-one (Granada Green, GG), was designed and synthesised. The new dye has spectral characteristics similar to those of other xanthenic derivatives
- Martinez-Peragon,Miguel,Orte,Mota,Ruedas-Rama,Justicia,Alvarez-Pez,Cuerva,Crovetto
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Read Online
- Oxygen-Doped PAH Electrochromes: Difurano, Dipyrano, and Furano-Pyrano Containing Naphthalene-Cored Molecules
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In this work, we report the synthesis of O-doped naphthalene-based electrochromes. Exploiting the CuO-mediated Pummerer oxidative cycloetherification reaction, a series of 1,4- and 1,5-disubstituted naphthalene-cored dipyrano, difurano, and furano-pyrano polycyclic aromatic hydrocarbons (PAHs) have been prepared. Steady-state UV-Vis absorption and emission investigations showed that the spectroscopic profile strongly depends on the O-doping topology, with the dipyrano and the difurano derivatives demonstrating the most red-shifted and blue-shifted electronic transition, respectively. Computational investigations revealed that the cycloetherification reaction raises the HOMO energy level (while the LUMO remains largely unaffected), with the dipyrano derivatives displaying the highest values. Spectroelectrochemical measurements showed that, depending on the O-topology and the type of O-ring, different electrochromic responses could be obtained with colour transitions featuring high contrasts involving yellow, pink, orange or blue colours.
- Fletcher-Charles, Jack,Ferreira, Rúben R.,Abraham, Michael,Romito, Deborah,Oppel, Markus,González, Leticia,Bonifazi, Davide
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supporting information
(2021/11/23)
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- COMPOUNDS AND USES THEREOF
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The present disclosure features compounds useful for the treatment of BAF complex-related disorders.
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Page/Page column 71; 113-114
(2021/08/06)
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- Selective Halogenation Using an Aniline Catalyst
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Electrophilic halogenation is used to produce a wide variety of halogenated compounds. Previously reported methods have been developed mainly using a reagent-based approach. Unfortunately, a suitable "catalytic" process for halogen transfer reactions has yet to be achieved. In this study, arylamines have been found to generate an N-halo arylamine intermediate, which acts as a highly reactive but selective catalytic electrophilic halogen source. A wide variety of heteroaromatic and aromatic compounds are halogenated using commercially available N-halosuccinimides, for example, NCS, NBS, and NIS, with good to excellent yields and with very high selectivity. In the case of unactivated double bonds, allylic chlorides are obtained under chlorination conditions, whereas bromocyclization occurs for polyolefin. The reactivity of the catalyst can be tuned by varying the electronic properties of the arene moiety of catalyst.
- Samanta, Ramesh C.,Yamamoto, Hisashi
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supporting information
p. 11976 - 11979
(2015/08/18)
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- Synthesis of novel structurally simplified estrogen analogues with electron-donating groups in ring A
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A library of 25 novel estrogen analogues were prepared in five to eight steps from mostly commercially available substituted anisoles via bromination, formylation, Corey-Fuchs reaction, elimination, and Sonogashira reaction. Georg Thieme Verlag Stuttgart.
- Tietze, Lutz F.,Vock, Carsten A.,Krimmelbein, Ilga K.,Nacke, Linda
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experimental part
p. 2040 - 2060
(2009/12/27)
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- Compounds having activity as inhibitors of cytochrome P450RAI
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Compounds having Formula 2 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
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Page column 107-108
(2010/01/31)
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- Compounds having activity as inhibitors of cytochrome P450RAI
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Compounds having Formula 1 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
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Page column 109-110
(2010/01/31)
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- Compounds having activity as inhibitors of cytochrome P450RAI
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Compounds having Formula 8 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
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Page column 40, 108-109
(2010/11/29)
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- Compounds having activity as inhibitors of cytochrome P450RAI
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Compounds having Formula 1 wherein the symbols have the meaning defined in the specification are inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids.
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- Methods of providing and using compounds having activity as inhibitors of cytochrome P450RAI
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Novel compounds having the Formulas 1 through 8, wherein the symbols have the meaning defined in the specification, and certain previously known compounds have been discovered to act as inhibitors of the cytochrome P450RAI (retinoic acid inducible) enzyme, and are used for treating diseases responsive to treatment by retinoids. The compound can also be used in co-treatment with retinoids.
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- A Mild Selective Monobromination Reagent System for Alkoxybenzenes; N-Bromosuccinimide-Silica Gel
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The monobromination of alkoxybenzenes with N-bromosuccinimide catalyzed by silica gel in carbon tetrachloride occurred preferentially at the para-position. m-t-Butylmethoxybenzene yielded 4-bromo-3-t-butyl-1-methoxybenzene with a selectivity of 74percent even in the presence of a bulky substituent at the meta-position.
- Konishi, Hisatoshi,Aritomi, Katsutomo,Okano, Tamon,Kiji, Jitsuo
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p. 591 - 593
(2007/10/02)
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