33936-68-4Relevant academic research and scientific papers
An expedient synthesis of highly functionalized 1,3-dienes by employing cyclopropenes asC4units
Jiang, Chengzhou,Wu, Jiamin,Han, Jiabin,Chen, Kai,Qian, Yang,Zhang, Zhengyu,Jiang, Yaojia
supporting information, p. 5710 - 5713 (2021/06/16)
An efficient method has been described to synthesize dicarbonyl functionalized 1,3-dienes by cleaving the CC bond of enaminones with cyclopropenes in the presence of a rhodium catalyst. The acetate-substituted cyclopropenes are judiciously chosen as standardC4units of 1,3-diene precursors. The reactions are believed to undergo a unique cutting and insertion process, involving a CC bond cleavage of the enaminone and insertion of a newC(sp2) source with the formation of two C-C single bonds. A broad range of substrates can be used to synthesize the corresponding 1,3-dienes under very mild reaction conditions, including low catalyst-loading, ambient temperature, and a neutral reaction solvent.
One-Pot Synthesis of Symmetrical and Asymmetrical 3-Amino Diynes via Cu(I)-Catalyzed Reaction of Enaminones with Terminal Alkynes
Zhang, Changyuan,Guo, Huosheng,Chen, Lulu,Zhang, Jiantao,Guo, Mengping,Zhu, Xuncheng,Shen, Chan,Li, Zeng
supporting information, p. 8169 - 8173 (2021/11/01)
An economical and efficient protocol for the direct construction of amino skipped diynes through the Cu(I)-catalyzed reaction of enaminones and terminal alkynes has been described. Different kinds of symmetrical and asymmetrical 3-amino diynes could be ob
Facile Synthesis of Chiral Cyclic Ureas through Hydrogenation of 2-Hydroxypyrimidine/Pyrimidin-2(1H)-one Tautomers
Feng, Guang-Shou,Chen, Mu-Wang,Shi, Lei,Zhou, Yong-Gui
supporting information, p. 5853 - 5857 (2018/04/25)
A facile access to optically active cyclic ureas was developed through palladium-catalyzed asymmetric hydrogenation of pyrimidines containing tautomeric hydroxy group with up to 99 % ee. Mechanistic studies indicated that reaction pathway proceed through
Pyrazolo[1,5-a]pyrimidine-based inhibitors of HCV polymerase
Popovici-Muller, Janeta,Shipps Jr., Gerald W.,Rosner, Kristin E.,Deng, Yongqi,Wang, Tong,Curran, Patrick J.,Brown, Meredith A.,Siddiqui, M. Arshad,Cooper, Alan B.,Duca, Jose,Cable, Michael,Girijavallabhan, Viyyoor
scheme or table, p. 6331 - 6336 (2010/05/02)
The present paper describes a novel series of HCV RNA polymerase inhibitors based on a pyrazolo[1,5-a]pyrimidine scaffold bearing hydrophobic groups and an acidic functionality. Several compounds were optimized to low nanomolar potencies in a biochemical RdRp assay. SAR trends clearly reveal a stringent preference for a cyclohexyl group as one of the hydrophobes, and improved activities for carboxylic acid derivatives.
PYRAZOLO` 1,5A! PYRIMIDINE COMPOUNDS AS ANTIVIRAL AGENTS
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Page 52, (2010/11/30)
The invention relates to the inhibition of hepatitis C virus (HCV) replication. In particular, embodiments of the invention provide compounds and methods for inhibiting HCV RNA-dependent RNA polymerase enzymatic activity. The invention also provides compositions and methods for the prophylaxis and treatment of HCV infection.
