Synthesis and antimicrobial evaluation of 3-(4-arylthieno[2,3-<i>d</i>]pyrimidin-2-yl)- 2<i>H</i>-chromen-2-ones
作者:Sergiy V. Vlasov、Sergiy M. Kovalenko、Pavlo E. Shynkarenko、Konstantin Yu. Krolenko、Vitaliy S. Vlasov
DOI:10.1515/hc-2018-0013
日期:2018.8.28
Abstract Syntheses of 3-(4-arylthieno[2,3-d]pyrimidin-2-yl)-2H-chromen-2-ones 5 by the reaction of 2-iminocoumarin-3-carboxamides 1 with (2-aminothiophen-3-yl)(aryl)methanones 2 and by the alternative Suzuki coupling of 4-chlorothieno[2,3-d]pyrimidin-2-yl-2H-chromen-2-one 7 with arylboronic acids were developed. Compound 5d showed higher antimicrobialactivity against Staphylococcus aureus than the
Synthesis of 5-methyl-4-oxo-2-(coumarin-3-yl)-N-aryl-3,4-dihydrothieno[2,3-d]-pyrimidine-6-carboxamides
作者:Sergiy M. Kovalenko、Sergiy V. Vlasov、Valentin P. Chernykh
DOI:10.1002/hc.20303
日期:2007.5
Possible approaches to synthesis of 5-methyl-4-oxo-2-(coumarin-3-yl)-N-aryl-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxamides 4 have been discussed. It is shown that the preferable approach is cyclization of 2-iminocoumarin-3-carboxamides 1, utilizing 5-amino-3-methyl-N2-arylthiophene-2,4-dicarboxamides 2 as binucleophilic reagents. The proposed procedure allowed us to easily obtain 4 in two stages