Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Beata Jasiewicz"'
Autor:
Karolina Babijczuk, Natalia Berdzik, Damian Nowak, Beata Warżajtis, Urszula Rychlewska, Justyna Starzyk, Lucyna Mrówczyńska, Beata Jasiewicz
Publikováno v:
International Journal of Molecular Sciences, Vol 25, Iss 10, p 5364 (2024)
Alkaloids are natural compounds useful as scaffolds for discovering new bioactive molecules. This study utilized alkaloid gramine to synthesize two groups of C3-substituted indole derivatives, which were either functionalized at N1 or not. The compou
Externí odkaz:
https://doaj.org/article/08e73114748149e58e7ae66cab8852de
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract New structurally diverse groups of C8-substituted caffeine derivatives were synthesized and evaluated for their chemical and biological properties. Mass spectrometry, FT-IR, and NMR characterizations of these derivatives were performed. The
Externí odkaz:
https://doaj.org/article/ddb67f2b0db149dc9caec8203dda1462
Autor:
Rafał Wawrzyniak, Małgorzata Guzowska, Wiesław Wasiak, Beata Jasiewicz, Alina Bączkiewicz, Katarzyna Buczkowska
Publikováno v:
Molecules, Vol 28, Iss 21, p 7276 (2023)
Liverworts contain a large number of biologically active compounds that are synthesised and stored in their oil bodies. However, knowledge about the chemical composition of individual species is still incomplete. The subject of the study was Calypoge
Externí odkaz:
https://doaj.org/article/0d5503667776462a9625f85a65a79c26
Autor:
Damian Nowak, Karolina Babijczuk, La Ode Irman Jaya, Rafał Adam Bachorz, Lucyna Mrówczyńska, Beata Jasiewicz, Marcin Hoffmann
Publikováno v:
International Journal of Molecular Sciences, Vol 24, Iss 14, p 11349 (2023)
Artificial intelligence (AI) is widely explored nowadays, and it gives opportunities to enhance classical approaches in QSAR studies. The aim of this study was to investigate the cytoprotective activity parameter under oxidative stress conditions for
Externí odkaz:
https://doaj.org/article/3ebda0c08c4047959b5d3c629200bfa7
Autor:
Beata Jasiewicz, Weronika Kozanecka-Okupnik, Michał Przygodzki, Beata Warżajtis, Urszula Rychlewska, Tomasz Pospieszny, Lucyna Mrówczyńska
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Abstract A series of fifteen indole derivatives substituted at the C-3 position were synthesized and characterized. The antioxidant activity of all derivatives was investigated by three in vitro antioxidant assays, and the derivative with pyrrolidine
Externí odkaz:
https://doaj.org/article/017779a06b6b4985a8841ab1b91cf341
Autor:
Karolina Babijczuk, Beata Warżajtis, Justyna Starzyk, Lucyna Mrówczyńska, Beata Jasiewicz, Urszula Rychlewska
Publikováno v:
Molecules, Vol 28, Iss 10, p 4132 (2023)
The ability of the indole–imidazole hybrid ligands to coordinate with the Zn(II) ion and the resulting structures of this new class of coordination compounds were analyzed in order to determine their structural properties and biological functionali
Externí odkaz:
https://doaj.org/article/d3a782070bf3422b83893f8a31ef26f4
Autor:
Beata Jasiewicz, Karolina Babijczuk, Beata Warżajtis, Urszula Rychlewska, Justyna Starzyk, Grzegorz Cofta, Lucyna Mrówczyńska
Publikováno v:
Molecules, Vol 28, Iss 2, p 708 (2023)
In the search for new bioactive compounds, a methodology based on combining two molecules with biological properties into a new hybrid molecule was used to design and synthesize of a series of ten indole derivatives bearing imidazole, benzothiazole-2
Externí odkaz:
https://doaj.org/article/606e4e951abf47e79eb14293132f3663
Publikováno v:
Acta Chimica Slovenica, Vol 65, Iss 4, Pp 795-800 (2018)
The mass spectrometric fragmentations of ten new 8-alkylaminocaffeine derivatives were investigated. The fragmentation pathways of new polyamine derivatives of caffeine on the basis of low and high-resolution electron ionization (EI) mass spectra wer
Externí odkaz:
https://doaj.org/article/00a206b97a1b430ab923042c7691edcb
Publikováno v:
Molecules, Vol 26, Iss 4, p 1180 (2021)
Aneura pinguis (L.) Dumort. is a representative of the simple thalloid liverworts, one of the three main types of liverwort gametophytes. According to classical taxonomy, A. pinguis represents one morphologically variable species; however, genetic da
Externí odkaz:
https://doaj.org/article/a6dc4d7cc3c24e9aa3f8681313bc7184
Autor:
Beata Jasiewicz
Publikováno v:
Molecules, Vol 13, Iss 1, Pp 3-10 (2008)
Sparteine N1-oxide and α-isosparteine N-oxide were prepared and theirstructures determined for the first time by 1H- and 13C-NMR spectroscopy using twodimensionaltechniques. The N-oxide effects were also calculated.
Externí odkaz:
https://doaj.org/article/4fd50a8847e34f3c98610f8171896e32