444914-29-8Relevant academic research and scientific papers
Room-Temperature Gold-Catalysed Arylation of Heteroarenes: Complementarity to Palladium Catalysis
Cresswell, Alexander J.,Lloyd-Jones, Guy C.
supporting information, p. 12641 - 12645 (2016/08/30)
Tailoring of the pre-catalyst, the oxidant and the arylsilane enables the first room-temperature, gold-catalysed, innate C?H arylation of heteroarenes. Regioselectivity is consistently high and, in some cases, distinct from that reported with palladium ca
Copper-Mediated [3 + 2] Oxidative Cyclization Reaction of N-Tosylhydrazones and β-Ketoesters: Synthesis of 2,3,5-Trisubstituted Furans
Huang, Yubing,Li, Xianwei,Yu, Yue,Zhu, Chuanle,Wu, Wanqing,Jiang, Huanfeng
, p. 5014 - 5020 (2016/07/06)
The first attempt at utilizing N-tosylhydrazones as two-carbon synthons has been successfully achieved, which underwent a copper-mediated [3 + 2] oxidative cyclization reaction to afford 2,3,5-trisubstituted furans in moderate to good yields. The features of this method include inexpensive metal catalyst, readily available substrates, high regioselectivity, and convenient operation. The studies provide important approaches for further exploration of the powerful and diverse reaction abilities of N-tosylhydrazones.
Cobalt(II)-catalyzed electrophilic alkynylation of 1,3-dicarbonyl compounds to form polysubstituted furans via π-π Activation
Roslan, Irwan Iskandar,Sun, Jiulong,Chuah, Gaik-Khuan,Jaenicke, Stephan
supporting information, p. 719 - 726 (2015/03/18)
Polysubstituted furans were obtained with excellent yields via the electrophilic alkynylation of 1,3-dicarbonyl compoundsws with phenyl- or ester-substituted brominated alkynes. The reaction is catalyzed by the inexpensive and readily available catalyst, cobalt(II) chloride, and has a wide substrate scope. The C(sp)-C(sp3) coupling occurs under mild conditions with short reaction times and does not require an inert atmosphere or ligands. It is proposed that the reaction proceeds through a chelation complex of cobalt(II) with the deprotonated 1,3-dicarbonyl compound.
HETEROCYCLIC COMPOUND
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Page/Page column 72, (2010/08/07)
The present invention provides a heterocyclic compound represented by the following formula (I), which has a glucagon antagonistic action and is useful for the prophylaxis or treatment of diabetes and the like, a compound represented by wherein ring A is an optionally substituted benzene ring and the like; Y is a nitrogen atom and the like; X is -O- and the like; R4 is a hydrogen atom and the like; R5 and R6 are each independently a hydrogen atom and the like; R1 is an optionally substituted hydrocarbon group and the like; R2 is a hydrogen atom and the like; and R3 is -(CH2)3-COOH and the like, or a salt thereof.
Low catalyst loading ligand-free palladium-catalyzed direct arylation of furans: An economically and environmentally attractive access to 5-arylfurans
Dong, Jia Jia,Roger, Julien,Pogan, Franc,Doucet, Henri
experimental part, p. 1832 - 1846 (2011/03/18)
The direct 5-arylation of furans at very low catalyst loading using Pd(OAc)2 as catalyst without added ligand proceed in high yields. Turnover numbers up to 10000 have been obtained for the coupling of several activated aryl bromides. A wide ra
FURAN OR THIOPHENE DERIVATIVE AND MEDICINAL USE THEREOF
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Page/Page column 58, (2008/06/13)
The present invention provides a compound represented by the formula (I): [wherein R is an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, p is 0, 1 or 2, and when p is 2, each R may be the same or different, R1 is a hydrogen atom or an optionally substituted hydrocarbon group, R2 is an optionally substituted aromatic group, Ring A is an optionally substituted monocyclic aromatic ring or optionally substituted bicyclic aromatic fused ring, X1 is an oxygen atom or a sulfur atom, X2 is a bond, an oxygen atom or -S(O)n- (wherein n is 0, 1 or 2), Y is a bond, an oxygen atom, -S(O)m-, -C(=O)-N(R3)- or -N(R3)-C(=O)- (R3 is a hydrogen atom, an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, and m is 0, 1 or 2), M1, M2 and M3 may be the same or different and are each independently a bond or an optionally substituted divalent aliphatic hydrocarbon group, and M4 is an optionally substituted divalent aliphatic hydrocarbon group] or a salt thereof, which is useful as a prophylactic and/or therapeutic agent for lipid metabolism abnormality, arteriosclerotic disease and sequelae thereof, diabetes mellitus and the like.
AMINOETHANOL DERIVATIVES
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Page/Page column 79, (2010/11/30)
The present invention provides a pharmaceutical agent having cholesteryl ester transfer protein inhibitory action and useful as a blood lipid lowering agent and the like. The present invention relates to a compound represented by the formula wherein Ar1 is an aromatic ring group optionally having substituents, Ar2 is an aromatic ring group having substituents, OR'' is an optionally protected hydroxyl group, R is an acyl group, R' is a hydrogen atom or a hydrocarbon group optionally having substituents, or a salt thereof, and a pharmaceutical composition containing a compound of the formula (I) or a salt thereof or a prodrug thereof.
