22536-62-5Relevant articles and documents
ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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Paragraph 0104-0106, (2020/12/17)
The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent device having a low driving voltage and/or a high luminous efficiency and/or a long lifes
The Dimroth rearrangement as a probable cause for structural misassignments in imidazo[1,2-a]pyrimidines: A 15N-labelling study and an easy method for the determination of regiochemistry
Chatzopoulou, Maria,Martínez, R. Fernando,Willis, Nicky J.,Claridge, Timothy D.W.,Wilson, Francis X.,Wynne, Graham M.,Davies, Stephen G.,Russell, Angela J.
, p. 5280 - 5288 (2018/07/21)
Structural misassignments are often seen for complex natural products, but this can also be an issue with seemingly simpler structures. In this paper, we describe how, using a 15N-labelled analogue, we established that the Dimroth rearrangement
Design and synthesis of furyl/thineyl pyrroloquinolones based on natural alkaloid perlolyrine, lead to the discovery of potent and selective PDE5 inhibitors
Zheng, Hongbo,Li, Lin,Sun, Bin,Gao, Yun,Song, Wei,Zhao, Xiaoyu,Gao, Yanhui,Xie, Zhiyu,Zhang, Nianzhao,Ji, Jianbo,Yuan, Huiqing,Lou, Hongxiang
supporting information, p. 30 - 38 (2018/03/08)
Based on perlolyrine (1), a natural alkaloid with weak PDE5 potency from the traditional Chinese aphrodisiac plant Tribulus terrestris L., a series α-substituted tetrahydro-β-carboline (THβC) derivatives were synthesized via T+BF4--mediated oxidative C–H functionalization of N-aryl THβCs with diverse potassium trifluoroborates. Following Winterfeldt oxidation afforded the corresponding furyl/thienyl pyrroloquinolones, of which 5-ethylthiophene/ethylfuran derivatives 20a–b were identified as the most potent and selective PDE5 inhibitors. Among the enantiomers, (S)-20a and (S)-20b (IC50 = 0.52 and 0.39 nM) were found to be more effective than their (R)-antipode, display favorable pharmacokinetic profiles, exert in vitro vasorelaxant effects on the isolated thoracic aorta, and exhibit in vivo efficacy in the anesthetized rabbit erectile model.
Rapid Room-Temperature, Chemoselective Csp2?Csp2Coupling of Poly(pseudo)halogenated Arenes Enabled by Palladium(I) Catalysis in Air
Kalvet, Indrek,Magnin, Guillaume,Schoenebeck, Franziska
supporting information, p. 1581 - 1585 (2017/02/05)
While chemoselectivities in Pd0-catalyzed coupling reactions are frequently non-intuitive and a result of a complex interplay of ligand/catalyst, substrate, and reaction conditions, we herein report a general method based on PdIthat allows for an a priori predictable chemoselective Csp2?C Csp2coupling at C?Br in preference to C?OTf and C?Cl bonds, regardless of the electronic or steric bias of the substrate. The C?C bond formations are extremely rapid (Idimer under open-flask conditions.
Metal-free arylation of pyrimidines through a photochemical process
Ruch, Jonas,Aubin, Ariane,Erbland, Guillaume,Fortunato, Audrey,Goddard, Jean-Philippe
supporting information, p. 2326 - 2329 (2016/02/18)
Pyrimidinyl and pyrazinyl radicals were generated under moderate energetic irradiation conditions (UVA), and proved to be prompt to undergo C-C bond formation processes. Hetero-biaryl derivatives were obtained in good to high yields with highly interesting functional group selectivities. Bis hetero-biaryls were also easily accessible leading to original compounds, ready for further transformations. Experiments supporting radical processes have been reported.
NOVEL SUBSTITUTED PYRIMIDINE COMPOUNDS
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Page/Page column 100; 101, (2016/02/05)
The invention relates to novel substituted pyrimidine compounds of general formula (I), in which the chemical groupings, substituents, variables and indices are as defined in the description, and to their use as medicaments, in particular as medicaments for the treatment of conditions and diseases that can be treated by inhibition of the PDE4 enzyme.
Remarkable catalytic activity of [PdCl2(CH3CN) 2] in Suzuki-Miyaura cross-coupling reaction in aqueous media under mild conditions
Ganesamoorthy,Shanmugasundaram,Karvembu
, p. 118 - 124 (2013/04/23)
[PdCl2(CH3CN)2] (2 mol%) was found to be an efficient catalyst for the Suzuki-Miyaura cross coupling reaction between aryl bromide and aryl boronic acid in water solvent at 45 °C. The scope of the protocol was extended to various aryl bromides and aryl boronic acids. In general, an effective method has been developed for the Suzuki-Miyaura cross coupling reaction by using a phosphine-free Pd catalyst.
NOVEL PYRROLIDINE DERIVED BETA 3 ADRENERGIC RECEPTOR AGONISTS
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Page/Page column 48, (2011/04/14)
The present invention provides compounds of Formula (I), pharmaceutical compositions thereof, and method of using the same in the treatment or prevention of diseases mediated by the activation of β3-adrenoceptor.
Cross-coupling reactions of indium organometallics with 2,5-dihalopyrimidines: Synthesis of hyrtinadine A+
Mosquera, Angeles,Riveiros, Ricardo,Sestelo, Jose Perez,Sarandeses, Luis A.
supporting information; experimental part, p. 3745 - 3748 (2009/07/09)
(Chemical Equation Presented) The palladium-catalyzed cross-coupling reaction of triorganoindium reagents (R3In) with 5-bromo-2- chloropyrimidine proceeds chemoselectively, in good yields, to give 5-substituted-2-chloropyrimidines or 2,5-disubstituted pyrimidines using 40 or 100 mol % of R3In, respectively. Sequential cross-couplings are also performed, in one pot, using two different R3In. This method was used to achieve the first synthesis of the alkaloid hyrtinadine A. The key step was a two-fold cross-coupling reaction between a tri(3-indolyl)indium reagent and 5-bromo-2-chloropyrimidine.
Simple microwave-assisted ligand-free Suzuki cross-coupling: Functionalization of halo-pyrimidine moieties
Colombo, Matteo,Giglio, Marco,Peretto, Ilaria
, p. 1077 - 1081 (2008/12/20)
(Chemical Equation Presented) An advantageous ligand-free protocol for Suzuki couplings is described. The synthetic procedure entails microwave irradiation for the reduction of the reaction times and the use of silica cartridges for the purification. Dihalo-pyrimidine structures, interesting scaffolds in medicinal chemistry, were chosen as test compounds.