90842-07-2Relevant academic research and scientific papers
Synthesis and capsule formation of upper rim substituted tetra-acrylamido calix[4]arenes
Kuhnert, Nikolai,Le-Gresley, Adam
, p. 2175 - 2182 (2005)
Upper rim substituted tetraiodo calix[4]arenes are coupled to a variety of acrylamides using the palladium catalysed Heck reaction. Tetra-acrylamido upper rim substituted calix[4]arenes are obtained in good yields with exceptionally high stereoselectivity, to produce the & all-trans isomers. Tetra-acrylamido calix[4]arenes derived from secondary acrylamides are shown to dimerise via eight hydrogen bonds to form dimeric capsules, which are able to include small organic molecules. The Royal Society of Chemistry 2005.
Radiation polymerization of 4-(acryloylamido)benzonitrile: Zinc and copper complexes
El-Mossalamy, El-Sayed H.,Al-Nowaiser, Fawzia M.,Al-Thabaiti, Shaeel A.,Al-Youbi, Abdul O.,Baschel, Suliman N.,Obaid, Abdulla Y.
, p. 853 - 857 (2007)
The new polymer containing cyano groups was synthesized by γ-irradiation. The oximated polymer was prepared using hydroxylamine hydrochloride in basic medium. The characterization of monomer, polymer, and oximated ones was confirmed by infrared and nuclea
Silyl Radical-Mediated Activation of Sulfamoyl Chlorides Enables Direct Access to Aliphatic Sulfonamides from Alkenes
Gouverneur, Véronique,Hell, Sandrine M.,Laudadio, Gabriele,Meyer, Claudio F.,Misale, Antonio,No?l, Timothy,Trabanco, Andrés A.,Willis, Michael C.
supporting information, p. 720 - 725 (2020/02/20)
Single electron reduction is more challenging for sulfamoyl chlorides than sulfonyl chlorides. However, sulfamoyl and sulfonyl chlorides can be easily activated by Cl-atom abstraction by a silyl radical with similar rates. This latter mode of activation was therefore selected to access aliphatic sulfonamides, applying a single-step hydrosulfamoylation using inexpensive olefins, tris(trimethylsilyl)silane, and photocatalyst Eosin Y. This late-stage functionalization protocol generates molecules as complex as sulfonamide-containing cyclobutyl-spirooxindoles for direct use in medicinal chemistry.
A Potent Isoprenylcysteine Carboxylmethyltransferase (ICMT) Inhibitor Improves Survival in Ras-Driven Acute Myeloid Leukemia
Marín-Ramos, Nagore I.,Balabasquer, Moisés,Ortega-Nogales, Francisco J.,Torrecillas, Iván R.,Gil-Ordó?ez, Ana,Marcos-Ramiro, Beatriz,Aguilar-Garrido, Pedro,Cushman, Ian,Romero, Antonio,Medrano, Francisco J.,Gajate, Consuelo,Mollinedo, Faustino,Philips, Mark R.,Campillo, Mercedes,Gallardo, Miguel,Martín-Fontecha, Mar,López-Rodríguez, María L.,Ortega-Gutiérrez, Silvia
supporting information, p. 6035 - 6046 (2019/08/02)
Blockade of Ras activity by inhibiting its post-translational methylation catalyzed by isoprenylcysteine carboxylmethyltransferase (ICMT) has been suggested as a promising antitumor strategy. However, the paucity of inhibitors has precluded the clinical validation of this approach. In this work we report a potent ICMT inhibitor, compound 3 [UCM-1336, IC50 = 2 μM], which is selective against the other enzymes involved in the post-translational modifications of Ras. Compound 3 significantly impairs the membrane association of the four Ras isoforms, leading to a decrease of Ras activity and to inhibition of Ras downstream signaling pathways. In addition, it induces cell death in a variety of Ras-mutated tumor cell lines and increases survival in an in vivo model of acute myeloid leukemia. Because ICMT inhibition impairs the activity of the four Ras isoforms regardless of its activating mutation, compound 3 surmounts many of the common limitations of available Ras inhibitors described so far. In addition, these results validate ICMT as a valuable target for the treatment of Ras-driven tumors.
NOVEL FERROPORTIN INHIBITORS
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Page/Page column 134, (2017/05/10)
The invention relates to novel ferroportin inhibitors of the general formula (I) pharmaceutical compositions comprising them and the use thereof as medicaments, in particular for the prophylaxis and/or treatment of diseases caused by a lack of hepcidin or iron metabolism disorders, such as particularly iron overload states such as in particular thalassemia and hemochromatosis.
Efficient cu-catalyzed atom transfer radical addition reactions of fluoroalkylsulfonyl chlorides with electron-deficient alkenes induced by visible light
Tang, Xiao-Jun,Dolbier, William R.
supporting information, p. 4246 - 4249 (2015/04/14)
Fluoroalkylsulfonyl chlorides, RfSO2Cl, in which Rf=CF3, C4F9, CF2H, CH2F, and CH2CF3, are used as a source of fluorinated radicals to add fluoroalkyl groups to electron-deficient, unsaturated carbonyl compounds. Photochemical conditions, using Cu mediation, are used to produce the respective α-chloro-β-fluoroalkylcarbonyl products in excellent yields through an atom transfer radical addition (ATRA) process. Facile nucleophilic replacement of the α-chloro substituent is shown to lead to further diverse functionalization of the products.
Systematic study of the glutathione (GSH) reactivity of N-arylacrylamides: 1. Effects of aryl substitution
Cee, Victor J.,Volak, Laurie P.,Chen, Yuping,Bartberger, Michael D.,Tegley, Chris,Arvedson, Tara,McCarter, John,Tasker, Andrew S.,Fotsch, Christopher
, p. 9171 - 9178 (2015/12/23)
Success in the design of targeted covalent inhibitors depends in part on a knowledge of the factors influencing electrophile reactivity. In an effort to further develop an understanding of structure-reactivity relationships among N-arylacrylamides, we determined glutathione (GSH) reaction rates for a family of N-arylacrylamides independently substituted at ortho-, meta-, and para-positions with 11 different groups common to inhibitor design. We find that substituent effects on reaction rates show a linear Hammett correlation for ortho-, meta-, and para-substitution. In addition, we note a correlation between 1H and 13C NMR chemical shifts of the acrylamide with GSH reaction rates, suggesting that NMR chemical shifts may be a convenient surrogate measure of relative acrylamide reactivity. Density functional theory calculations reveal a correlation between computed activation parameters and experimentally determined reaction rates, validating the use of such methodology for the screening of synthetic candidates in a prospective fashion.
Direct Photoredox-Catalyzed Reductive Difluoromethylation of Electron-Deficient Alkenes
Tang, Xiao-Jun,Zhang, Zuxiao,Dolbier, William R.
supporting information, p. 18961 - 18965 (2016/01/26)
Photoredox-catalyzed reductive difluoromethylation of electron-deficient alkenes was achieved in one step under tin-free, mild and neutral conditions. This protocol affords a facile method to introduce RCF2 (R=H, Ph, Me, and CH2N3) groups at sites β to electron-withdrawing groups. It was found that TTMS (tris(trimethylsilyl)silane) served nicely as both the H-atom donor and the electron donor in the catalytic cycle. Experimental and DFT computational results provided evidence that RCF2 (R=H, Ph, Me) radicals are nucleophilic in nature.
Metal-free oxidative spirocyclization of hydroxymethylacrylamide with 1,3-dicarbonyl compounds: A new route to spirooxindoles
Wang, Hua,Guo, Li-Na,Duan, Xin-Hua
supporting information, p. 5254 - 5257 (2013/11/06)
A metal-free oxidative spirocyclization of hydroxymethylacrylamide with 1,3-dicarbonyl compounds is described. The reaction proceeds through tandem dual C-H functionalization and intramolecular dehydration, in which two new C-C bonds and one C-O bond were formed. This method affords a novel and straightforward access to various spirooxindoles under mild conditions.
Substituted phenylamidines medicaments containing said compounds and method for production thereof
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, (2008/06/13)
The present invention relates to phenylamidines of general formula wherein R6 R7 are defined as in claim 1, the tautomers, the stereoisomers including mixtures thereof and the salts thereof, particularly their physiologically accepta
