Zobrazeno 1 - 10 of 72 pro vyhledávání: '"Ewa Chmielewska"'
1
Akademický článek
Determination of bisphosphonates anti-resorptive properties based on three forms of ceramic materials: Sorption and release process evaluation
Autor: Monika Zielińska, Ewa Chmielewska, Tomasz Buchwald, Adam Voelkel, Paweł Kafarski
Publikováno v: Journal of Pharmaceutical Analysis, Vol 11, Iss 3, Pp 364-373 (2021)
There is a strong need to search for more effective compounds with bone anti-resorptive properties, which will cause fewer complications than commonly used bisphosphonates. To achieve this goal, it is necessary to search for new techniques to charact
Externí odkaz: https://doaj.org/article/d057013f9dbc439096b289ca8e835c3c
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2
Akademický článek
One-Pot Phosphonylation of Heteroaromatic Lithium Reagents: The Scope and Limitations of Its Use for the Synthesis of Heteroaromatic Phosphonates
Autor: Ewa Chmielewska, Natalia Miodowska, Błażej Dziuk, Mateusz Psurski, Paweł Kafarski
Publikováno v: Molecules, Vol 28, Iss 7, p 3135 (2023)
A one-pot lithiation–phosphonylation procedure was elaborated as a method to prepare heteroaromatic phosphonic acids. It relied on the direct lithiation of heteroaromatics followed by phosphonylation with diethyl chlorophosphite and then oxidation
Externí odkaz: https://doaj.org/article/329794eba5464d7394eaa1f79bf9dadf
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3
Akademický článek
Cechy środków zapisu i przekazu informacji
Autor: Ewa Chmielewska-Gorczyca
Publikováno v: Z Badań nad Książką i Księgozbiorami Historycznymi (2020)
Autorka scharakteryzowała elementy układu komunikacyjnego, skupiając się na cechach nośnika informacji. Zwróciła uwagę na współistnienie środków komunikacji, a następnie omówiła ich główne tendencje rozwojowe.
Externí odkaz: https://doaj.org/article/6955b38be6fb43f58302f2ab69ce50b8
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4
Akademický článek
Three-Component Reaction of Diamines with Triethyl Orthoformate and Diethyl Phosphite and Anti-Proliferative and Antiosteoporotic Activities of the Products
Autor: Patrycja Petruczynik, Paweł Kafarski, Mateusz Psurski, Joanna Wietrzyk, Zdzisław Kiełbowicz, Jan Kuryszko, Ewa Chmielewska
Publikováno v: Molecules, Vol 25, Iss 6, p 1424 (2020)
A three-component reaction between diamines (diaminobenzenes, diaminocyclohexanes, and piperazines), triethyl orthoformate, and diethyl phosphite was studied in some detail. In the case of 1,3- and 1,4-diamines and piperazines, products of the substi
Externí odkaz: https://doaj.org/article/30547e9bc382487a9afb58ee40bf8c97
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5
Akademický článek
A new method for the synthesis of α-aminoalkylidenebisphosphonates and their asymmetric phosphonyl-phosphinyl and phosphonyl-phosphinoyl analogues
Autor: Anna Kuźnik, Roman Mazurkiewicz, Mirosława Grymel, Katarzyna Zielińska, Jakub Adamek, Ewa Chmielewska, Marta Bochno, Sonia Kubica
Publikováno v: Beilstein Journal of Organic Chemistry, Vol 11, Iss 1, Pp 1418-1424 (2015)
A convenient approach has been developed to α-aminoalkylidenebisphosphonates and their asymmetric phosphonyl-phosphinyl and phosphonyl-phosphinoyl analogues by α-phosphonylation, α-phosphinylation or α-phosphinoylation of 1-(N-acylamino)alkylphos
Externí odkaz: https://doaj.org/article/5d169af806ba433ebbefc0a4de6c3794
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6
Akademický článek
Synthesis and Biological Evaluation of Aminobisphosphonates—Analogues of Incadronate
Autor: Ewa Chmielewska, Jan Kuryszko, Joanna Wietrzyk, Zdzisław Kiełbowicz, Paweł Kafarski
Publikováno v: Proceedings, Vol 22, Iss 1, p 64 (2019)
Bisphosphonates had been found to act as strong metal ion complexing agents with usefulindustrial and household applications. [...]
Externí odkaz: https://doaj.org/article/6d6484fe16ba4fcfb85b6dcb1fc866b6
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7
The Problem of Professional burnout of Post-primary School Teachers on the Basis of a Study of Teachers from West Pomerania Province
Autor: Ewa Chmielewska
Publikováno v: Journal of Education, Technology and Computer Science. 32:173-183
Professional burnout syndrome is undoubtedly another civilisation disease that affects modern societies. In May 2021 professional burnout was included within the list of the WHO International Classification of Diseases, however, not as a disease, but
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1e2323e510afe3a814d03763ae808b14
https://doi.org/10.15584/jetacomps.2021.2.20
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9
Akademický článek
Three-Component Reaction of Benzylamines, Diethyl Phosphite and Triethyl Orthoformate: Dependence of the Reaction Course on the Structural Features of the Substrates and Reaction Conditions
Autor: Patrycja Miszczyk, Ilona Turowska-Tyrk, Paweł Kafarski, Ewa Chmielewska
Publikováno v: Molecules, Vol 22, Iss 3, p 450 (2017)
The reaction between benzyl amines, triethyl orthoformate, and diethyl phosphite affords either bisphosphonic (compound 1) or N-benzylaminobenzylphosphonic (compound 2) acid depending on the reaction conditions. The final output of the reaction can b
Externí odkaz: https://doaj.org/article/e17578c940db480c8f3ce79f46ca777d
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10
Akademický článek
Reaction of 3-Amino-1,2,4-Triazole with Diethyl Phosphite and Triethyl Orthoformate: Acid-Base Properties and Antiosteoporotic Activities of the Products
Autor: Patrycja Miszczyk, Dorota Wieczorek, Joanna Gałęzowska, Błażej Dziuk, Joanna Wietrzyk, Ewa Chmielewska
Publikováno v: Molecules, Vol 22, Iss 2, p 254 (2017)
The reaction of diethyl phosphite with triethyl orthoformate and a primary amine followed by hydrolysis is presented, and the reaction was suitable for the preparation of (aminomethylene)bisphosphonates. 3-Amino-1,2,4-triazole was chosen as an intere
Externí odkaz: https://doaj.org/article/3b1f047d6e8644148da2afb21dffcde8
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