3-Methoxalylchromone—a novel versatile reagent for the regioselective purine isostere synthesis
作者:Satenik Mkrtchyan、Viktor O. Iaroshenko、Sergii Dudkin、Ashot Gevorgyan、Marcelo Vilches-Herrera、Gagik Ghazaryan、Dmitriy M. Volochnyuk、Dmytro Ostrovskyi、Zeeshan Ahmed、Alexander Villinger、Vyacheslav Ya. Sosnovskikh、Peter Langer
DOI:10.1039/c0ob00379d
日期:——
The first synthesis of 3-methoxalylchromone was described. The reaction of the latter with electron-rich aminoheterocycles afforded a set of heteroannelated pyridines bearing a CO2Me substituent located at the α-position of the pyridine core.
4-Chloro-3-(trifluoroacetyl)- and 4-chloro-3-(methoxalyl)coumarins as novel and efficient building blocks for the regioselective synthesis of 3,4-fused coumarins
作者:Viktor O. Iaroshenko、Friedrich Erben、Satenik Mkrtchyan、Ani Hakobyan、Marcelo Vilches-Herrera、Sergii Dudkin、Alina Bunescu、Alexander Villinger、Vyacheslav Ya. Sosnovskikh、Peter Langer
DOI:10.1016/j.tet.2011.08.030
日期:2011.10
4-chloro-3-(methoxalyl)coumarins react with electron-rich aminoheterocycles, dimethyl 1,3-acetonedicarboxylate, hydrazines, alkyl thioglycolates, and methyl sarcosinate to give a variety of 3,4-heteroannulated coumarins. The starting materials were prepared by the reaction of 4-hydroxycoumarin with trifluoroacetic anhydride and methyl 2-chloro-2-oxoacetate in the presence of trimethylsilylchloride.
Design, synthesis and transformation of some heteroannulated 3-aminopyridines—purine isosteres with exocyclic nitrogen atom
作者:Viktor O. Iaroshenko、Marcelo Vilches-Herrera、Ashot Gevorgyan、Satenik Mkrtchyan、Knar Arakelyan、Dmytro Ostrovskyi、Muhammad S.A. Abbasi、Linda Supe、Ani Hakobyan、Alexander Villinger、Dmitriy M. Volochnyuk、Andrei Tolmachev
DOI:10.1016/j.tet.2012.11.026
日期:2013.1
The synthesis of 1-deazapurines and isosteres bearing the exocyclic nitrogen atom at position-1 was developed basing on the formal [3+3]-cyclization reaction of nitro-malonaldehyde with the set of electron-excessive aminoheterocycles. Through the functionalization of the purine-like scaffolds synthesized the diversity of compounds furnished in the possition-1 with aryl, alkinyl, and vinyl rests, were obtained. (C) 2012 Elsevier Ltd. All rights reserved.