Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Jadwiga, Frelek"'
Autor:
Aldona Jelińska, Anna Zagożdżon, Marcin Górecki, Agnieszka Wisniewska, Jadwiga Frelek, Robert Holyst
Publikováno v:
PLoS ONE, Vol 12, Iss 4, p e0175838 (2017)
We showed that the Taylor Dispersion Analysis (TDA) is a fast and easy to use method for the study of denaturation proteins. We applied TDA to study denaturation of β-lactoglobulin, transferrin, and human insulin by anionic surfactant sodium dodecyl
Externí odkaz:
https://doaj.org/article/42d4236903704c6ab8f32b1e6c0703ce
Autor:
Zbigniew Pakulski, Norbert Gajda, Magdalena Jawiczuk, Jadwiga Frelek, Piotr Cmoch, Sławomir Jarosz
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 10, Iss 1, Pp 1246-1254 (2014)
The reaction of appropriately functionalized sucrose phosphonate with sucrose aldehyde afforded a dimer composed of two sucrose units connected via their C6-positions (‘the glucose ends’). The carbonyl group in this product (enone) was stereosele
Externí odkaz:
https://doaj.org/article/6e6090371ba44aa5ab7e18d52dd5892a
Autor:
Marcin Górecki, Jadwiga Frelek
Publikováno v:
Journal of Natural Products. 83:955-964
This critical appraisal is intended for users of the dimolybdenum method, well-established in electronic circular dichroism (ECD) to determine the absolute configuration of vic-diols and, in partic...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b9ae8e19dd453914b60c26d33182168
https://doi.org/10.1021/acs.jnatprod.9b00800
https://doi.org/10.1021/acs.jnatprod.9b00800
Publikováno v:
Chirality. 32:437-445
This work presents results of methyl 7-oxoabiet-13(14)-en-18-oate (3) self-oxidation with air-oxygen in the presence of various bases such as triethylamine or sodium t-butoxide. While under aerobic conditions, the use of sodium t-butoxide as a base r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4234bfa0893951e16ea68faae289bcf
https://doi.org/10.1002/chir.23176
https://doi.org/10.1002/chir.23176
Autor:
Athanassios G. Coutsolelos, Anna Mitraki, Jadwiga Frelek, Emmanouil Nikoloudakis, Asterios Charisiadis, Georgios Charalambidis, Vasilis Nikolaou, Aleksandra Butkiewicz, Chrysoula Kokotidou, Kostas Karikis, Fotios Folias
Publikováno v:
Nanoscale. 10:1735-1741
Herein, we present the synthesis of a series of boron-dipyrromethane (BDP) derivatives bearing diphenylalanine (FF) at their meso position via amide bond coupling. The BDP-FF bioconjugates are able to form self-assembled materials with different morp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6bea6e7865be55591bb2f2e1630b33a
https://doi.org/10.1039/c7nr08667a
https://doi.org/10.1039/c7nr08667a
Autor:
Marcin Górecki, Jadwiga Frelek
Publikováno v:
International Journal of Molecular Sciences
International Journal of Molecular Sciences; Volume 23; Issue 1; Pages: 273
International Journal of Molecular Sciences, Vol 23, Iss 273, p 273 (2022)
International Journal of Molecular Sciences; Volume 23; Issue 1; Pages: 273
International Journal of Molecular Sciences, Vol 23, Iss 273, p 273 (2022)
This paper’s main objective is to show that many different factors must be considered when solving stereochemical problems to avoid misleading conclusions and obtain conclusive results from the analysis of spectroscopic properties. Particularly in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee978f65475581c90ef54db52f89fed0
https://doi.org/10.3390/ijms23010273
https://doi.org/10.3390/ijms23010273
Autor:
Marcin Górecki, Jadwiga Frelek
Publikováno v:
TrAC Trends in Analytical Chemistry. 144:116428
Finding the right chiroptical tool to reliably assign the stereochemistry of bioactive compounds is a hot topic in spectroscopy, attracting a broad and growing interest of the Organic Analytical and Medical Chemistry Society. Since these molecules' t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a588c24939d7a46270a8cf6245bcef10
https://doi.org/10.1016/j.trac.2021.116428
https://doi.org/10.1016/j.trac.2021.116428
Autor:
Joanna E. Rode, Jadwiga Frelek
Publikováno v:
Chirality. 29:653-662
The primary purpose of this work was to demonstrate the suitability of circular dichroism (CD) spectroscopy in stereochemical studies of α,β-unsaturated oximes, with particular emphasis on determination of E and Z geometry of the oxime double bond.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a716b2a41a92c737dd2fa327a18be4cc
https://doi.org/10.1002/chir.22750
https://doi.org/10.1002/chir.22750
Publikováno v:
Chirality. 29:589-598
The aim of the present work was to test various chiroptical techniques, including in particular the in situ dirhodium methodology, to assign the absolute configuration of 1,2- and 1,3-amino alcohols. As models, we selected mainly compounds that have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef3e2dd58bac448ce469cbe14954b6e9
https://doi.org/10.1002/chir.22736
https://doi.org/10.1002/chir.22736
Autor:
Marcin Górecki, Jadwiga Frelek, Roman Luboradzki, Wojciech J. Szczepek, Anna Ostaszewska, Alicja Dziedzic
Publikováno v:
Steroids. 124:72-80
Four crystalline dutasteride hydrochloride hydrate solvates containing respectively methanol, ethanol, acetone and acetonitrile molecules were obtained. All samples were characterized by extensive spectroscopic analysis with infrared spectroscopy (FT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42b3c751ecad7e1766ebd814239dc857
https://doi.org/10.1016/j.steroids.2017.05.014
https://doi.org/10.1016/j.steroids.2017.05.014