Synthesis of substituted 4-aminothieno[2,3-d]-, 4-aminothieno[3,2-d]- and 4-aminothieno[3,4-d]pyrimidines
摘要:
A study was carried out on the nucleophilic cleavage of the lactam bond in 4-amino(pyrrolidino, piperidino, morpolino)thieno[2,3-d]-, -[3,2-d]-, and -[3,4-d]pyrimido[1,2-b]isoquinolin-11-ones. This bond is readily cleaved upon heating in methanolic NaOH at reflux for 1-2 h to give previously unreported 4-amino-2-(o-carboxyphenylmethyl)thienopyrimidines. Replacement of the amine group by an OH group is possible under the reaction conditions, leading to the corresponding, already reported 2-(o-carboxyphenylmethyl)-4-oxothienopyrimidines. Prolonged refluxing (8-12 h) resulted in oxothienopyrimidines as the major products of the transformations of all the thienopyrimido-isoquinolinones studied. Biological activity predictions of these new products were compared in silico.
Condensed isoquinolines. 35*. Synthesis and reactions of 4h-thieno[3′,4′:5,6]pyrimido-[1,2-b]isoquinoline-4,11(5H)-dione
摘要:
Derivatives of the previously unknown tetracyclic system 4H-thieno[3',4':5,6] pyrimido[1,2-b]isoquinoline- 4,11(5H)-dione have been synthesized. A comparison of the spectral characteristics and the biological activities of these compounds has been carried out, and also of their positional isomers and benzene isosteres. The differences, associated with the position of the sulfur atom, are most reflected in their electronic spectra.
Condensed isoquinolines. 35*. Synthesis and reactions of 4h-thieno[3′,4′:5,6]pyrimido-[1,2-b]isoquinoline-4,11(5H)-dione
作者:A. V. Zadorozhny、V. A. Kovtunenko、A. V. Turov
DOI:10.1007/s10593-010-0608-9
日期:2010.12
Derivatives of the previously unknown tetracyclic system 4H-thieno[3',4':5,6] pyrimido[1,2-b]isoquinoline- 4,11(5H)-dione have been synthesized. A comparison of the spectral characteristics and the biological activities of these compounds has been carried out, and also of their positional isomers and benzene isosteres. The differences, associated with the position of the sulfur atom, are most reflected in their electronic spectra.
Synthesis of substituted 4-aminothieno[2,3-d]-, 4-aminothieno[3,2-d]- and 4-aminothieno[3,4-d]pyrimidines
作者:A. V. Zadorozhny
DOI:10.1007/s10593-012-1095-y
日期:2012.10
A study was carried out on the nucleophilic cleavage of the lactam bond in 4-amino(pyrrolidino, piperidino, morpolino)thieno[2,3-d]-, -[3,2-d]-, and -[3,4-d]pyrimido[1,2-b]isoquinolin-11-ones. This bond is readily cleaved upon heating in methanolic NaOH at reflux for 1-2 h to give previously unreported 4-amino-2-(o-carboxyphenylmethyl)thienopyrimidines. Replacement of the amine group by an OH group is possible under the reaction conditions, leading to the corresponding, already reported 2-(o-carboxyphenylmethyl)-4-oxothienopyrimidines. Prolonged refluxing (8-12 h) resulted in oxothienopyrimidines as the major products of the transformations of all the thienopyrimido-isoquinolinones studied. Biological activity predictions of these new products were compared in silico.