Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Piotr Wałejko"'
Publikováno v:
Molecules, Vol 27, Iss 14, p 4630 (2022)
Vitamin E consists of a group of compounds including α- β- γ- and δ-tocopherols and α- β- γ- and δ-tocotrienols, containing the chroman-6-ol system. The recognition of the structural and dynamic properties of this system, present in all vitam
Externí odkaz:
https://doaj.org/article/021f0ae3e62d471b892281b3a2f2e1fb
Autor:
Piotr Wałejko, Łukasz Dobrzycki, Artur Ratkiewicz, Paweł Socha, Stanisław Witkowski, Michał K. Cyrański
Publikováno v:
Journal of Saudi Chemical Society, Vol 23, Iss 3, Pp 365-377 (2019)
α-Tocopheryl succinate (α-TOS) is a very promising anticancer agent; however, the mechanism of its action and the role of the succinic moiety in biological activity still remains unclear. This paper, presents the first determination of the X-ray st
Externí odkaz:
https://doaj.org/article/c79e57fc65d94be1b3fee6509f92c41c
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 11, Iss 1, Pp 1893-1901 (2015)
The ROCM reactions of exo- and endo-2-cyano-7-oxanorbornenes with allyl alcohol or allyl acetate promoted by different ruthenium alkylidene catalysts were studied. The stereochemical outcome of the reactions was established. The issues concerning che
Externí odkaz:
https://doaj.org/article/befe5a160d85457583c780a680e73504
Publikováno v:
Chemical Physics. 519:126-136
The X-ray structures of 2,6-dimethylphenyl and phenyl 2,3,4,6-tetra-O-acetyl β-glucosides (1 and 3) and phenyl α-mannoside (6) were obtained. The independent part of the unit cell of the glycosides 1 and 6 was formed by one molecule, and for the gl
Autor:
Stanisław Witkowski, Łukasz Dobrzycki, Paweł Socha, Piotr Wałejko, Michał K. Cyrański, Artur Ratkiewicz
Publikováno v:
Journal of Saudi Chemical Society, Vol 23, Iss 3, Pp 365-377 (2019)
α-Tocopheryl succinate (α-TOS) is a very promising anticancer agent; however, the mechanism of its action and the role of the succinic moiety in biological activity still remains unclear. This paper, presents the first determination of the X-ray st
Autor:
Aneta Baj, Piotr Wałejko
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 150:275-282
In this study, 3,4,6-tri-O-acetyl-1,2-O-(1-tocopheroxyethylidene)-α-d-glucopyranose (sugar 1,2-orthoester) was synthesized with good and moderate yields in the presence of an N,N-diisopropylethylamine/tetrabutylammonium iodide system via a reaction
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 8, Pp o1901-o1901 (2011)
The crystal structure of the title compound, C14H17NO2, solved and refined against synchrotron diffraction data, contains one formula unit in an asymmetric unit. In the crystal, molecules form right-handed helices located at the 21 screw axis paralle
Externí odkaz:
https://doaj.org/article/0d13599194b3476d9663fb892d078abd
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 2, Pp o503-o504 (2011)
The crystal structure of the title water-soluble analogue of vitamin E, trolox amide, C14H19NO3, solved and refined against synchrotron diffraction data, contains two molecules in the asymmetric unit. In both molecules, the heterocyclic ring is in a
Externí odkaz:
https://doaj.org/article/cb54dab425284860bddbae5f614f422b
Autor:
Stanisław Witkowski, Piotr Wałejko
Publikováno v:
Journal of Saudi Chemical Society. 21:118-122
Figure options Download full-size image Download high-quality image (34 K) Download as PowerPoint slide Selective removal of one phenyl group from alkyl diphenyl phosphates is reported. Catalytic hydrogenation on palladium catalyst (Pd/C) under atmos
Autor:
Piotr Wałejko, Stanisław Witkowski
Publikováno v:
Prospects in Pharmaceutical Sciences. 14:45-51
Wielonienasycone kwasy tłuszczowe (WNKT) są niezbędne do prawidłowego rozwoju i normalnego funkcjonowania organizmu oraz mają szczególne znaczenie w żywieniu człowieka. W tej grupie wyróżnia się dwie rodziny kwasów: ω–3 i ω–6. Speł