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Synthesis and Biological Activity of New 7-Amino-oxazolo[5,4-d]Pyrimidine Derivatives

The synthesis of a series of novel 7-aminooxazolo[5,4-d]pyrimidines 5, transformations during their synthesis and their physicochemical characteristics have been described. Complete detailed spectral analysis of the intermediates 2–4, the N′-cyanooxazolylacetamidine by-products 7 and final compounds...

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Autores principales: Sochacka-Ćwikła, Aleksandra, Regiec, Andrzej, Zimecki, Michał, Artym, Jolanta, Zaczyńska, Ewa, Kocięba, Maja, Kochanowska, Iwona, Bryndal, Iwona, Pyra, Anna, Mączyński, Marcin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7436121/
https://www.ncbi.nlm.nih.gov/pubmed/32759841
http://dx.doi.org/10.3390/molecules25153558
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author Sochacka-Ćwikła, Aleksandra
Regiec, Andrzej
Zimecki, Michał
Artym, Jolanta
Zaczyńska, Ewa
Kocięba, Maja
Kochanowska, Iwona
Bryndal, Iwona
Pyra, Anna
Mączyński, Marcin
author_facet Sochacka-Ćwikła, Aleksandra
Regiec, Andrzej
Zimecki, Michał
Artym, Jolanta
Zaczyńska, Ewa
Kocięba, Maja
Kochanowska, Iwona
Bryndal, Iwona
Pyra, Anna
Mączyński, Marcin
author_sort Sochacka-Ćwikła, Aleksandra
collection PubMed
description The synthesis of a series of novel 7-aminooxazolo[5,4-d]pyrimidines 5, transformations during their synthesis and their physicochemical characteristics have been described. Complete detailed spectral analysis of the intermediates 2–4, the N′-cyanooxazolylacetamidine by-products 7 and final compounds 5 has been carried out using MS, IR, 1D and 2D NMR spectroscopy. Theoretical research was carried out to explain the privileged formation of 7-aminooxazolo[5,4-d]pyrimidines in relation to the possibility of their isomer formation and the related thermodynamic aspects. Additionally, the single-crystal X-ray diffraction analysis for 5h was reported. Ten 7-aminooxazolo[5,4-d]pyrimidines 5 (SCM1–10) were biologically tested in vitro to preliminarily evaluate their immunological, antiviral and anticancer activity. Compounds SCM5 and SCM9 showed the best immunoregulatory profile. The compounds displayed low-toxicity and strongly inhibited phytohemagglutinin A-induced proliferation of human peripheral blood lymphocytes and lipopolysaccharide-induced proliferation of mouse splenocytes. Compound SCM9 caused also a moderate suppression of tumor necrosis factor α (TNF-α) production in a human whole blood culture. Of note, the compounds also inhibited the growth of selected tumor cell lines and inhibited replication of human herpes virus type-1 (HHV-1) virus in A-549 cell line. Molecular investigations showed that the compounds exerted differential changes in expression of signaling proteins in Jurkat and WEHI-231 cell lines. The activity of SCM5 is likely associated with elicitation of cell signaling pathways leading to cell apoptosis. The compounds may be of interest in terms of therapeutic utility as inhibitors of autoimmune disorders, virus replication and antitumor agents.
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spelling pubmed-74361212020-08-24 Synthesis and Biological Activity of New 7-Amino-oxazolo[5,4-d]Pyrimidine Derivatives Sochacka-Ćwikła, Aleksandra Regiec, Andrzej Zimecki, Michał Artym, Jolanta Zaczyńska, Ewa Kocięba, Maja Kochanowska, Iwona Bryndal, Iwona Pyra, Anna Mączyński, Marcin Molecules Article The synthesis of a series of novel 7-aminooxazolo[5,4-d]pyrimidines 5, transformations during their synthesis and their physicochemical characteristics have been described. Complete detailed spectral analysis of the intermediates 2–4, the N′-cyanooxazolylacetamidine by-products 7 and final compounds 5 has been carried out using MS, IR, 1D and 2D NMR spectroscopy. Theoretical research was carried out to explain the privileged formation of 7-aminooxazolo[5,4-d]pyrimidines in relation to the possibility of their isomer formation and the related thermodynamic aspects. Additionally, the single-crystal X-ray diffraction analysis for 5h was reported. Ten 7-aminooxazolo[5,4-d]pyrimidines 5 (SCM1–10) were biologically tested in vitro to preliminarily evaluate their immunological, antiviral and anticancer activity. Compounds SCM5 and SCM9 showed the best immunoregulatory profile. The compounds displayed low-toxicity and strongly inhibited phytohemagglutinin A-induced proliferation of human peripheral blood lymphocytes and lipopolysaccharide-induced proliferation of mouse splenocytes. Compound SCM9 caused also a moderate suppression of tumor necrosis factor α (TNF-α) production in a human whole blood culture. Of note, the compounds also inhibited the growth of selected tumor cell lines and inhibited replication of human herpes virus type-1 (HHV-1) virus in A-549 cell line. Molecular investigations showed that the compounds exerted differential changes in expression of signaling proteins in Jurkat and WEHI-231 cell lines. The activity of SCM5 is likely associated with elicitation of cell signaling pathways leading to cell apoptosis. The compounds may be of interest in terms of therapeutic utility as inhibitors of autoimmune disorders, virus replication and antitumor agents. MDPI 2020-08-04 /pmc/articles/PMC7436121/ /pubmed/32759841 http://dx.doi.org/10.3390/molecules25153558 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sochacka-Ćwikła, Aleksandra
Regiec, Andrzej
Zimecki, Michał
Artym, Jolanta
Zaczyńska, Ewa
Kocięba, Maja
Kochanowska, Iwona
Bryndal, Iwona
Pyra, Anna
Mączyński, Marcin
Synthesis and Biological Activity of New 7-Amino-oxazolo[5,4-d]Pyrimidine Derivatives
title Synthesis and Biological Activity of New 7-Amino-oxazolo[5,4-d]Pyrimidine Derivatives
title_full Synthesis and Biological Activity of New 7-Amino-oxazolo[5,4-d]Pyrimidine Derivatives
title_fullStr Synthesis and Biological Activity of New 7-Amino-oxazolo[5,4-d]Pyrimidine Derivatives
title_full_unstemmed Synthesis and Biological Activity of New 7-Amino-oxazolo[5,4-d]Pyrimidine Derivatives
title_short Synthesis and Biological Activity of New 7-Amino-oxazolo[5,4-d]Pyrimidine Derivatives
title_sort synthesis and biological activity of new 7-amino-oxazolo[5,4-d]pyrimidine derivatives
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7436121/
https://www.ncbi.nlm.nih.gov/pubmed/32759841
http://dx.doi.org/10.3390/molecules25153558
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