Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Iwona Kowalczyk"'
Publikováno v:
Molecules, Vol 28, Iss 17, p 6336 (2023)
Surfactants are amphiphilic molecules and one of the most versatile products of the chemical industry. They can be absorbed at the air–water interface and can align themselves so that the hydrophobic part is in the air while the hydrophilic part is
Externí odkaz:
https://doaj.org/article/0eb3d63dda784ab9a297bfef945533aa
Publikováno v:
Molecules, Vol 27, Iss 19, p 6664 (2022)
(1) Background: Encapsulation of surfactants is an innovative approach that allows not only protection of the active substance, but also its controlled and gradual release. This is primarily used to protect metallic surfaces against corrosion or to c
Externí odkaz:
https://doaj.org/article/2243d349dc034ea6b8c5c7420368a119
Autor:
Marek Kowalczyk, Marcin Orłowski, Piotr Siermontowski, Dariusz Mucha, Krzysztof Zinkiewicz, Waldemar Kurpiewski, Ewa Zieliński, Iwona Kowalczyk, Agnieszka Pedrycz
Publikováno v:
BMC Cancer, Vol 18, Iss 1, Pp 1-9 (2018)
Abstract Background Aberrant crypt foci (ACF) are commonly considered the early pre-cancerous lesions that can progress to colorectal cancer (CRC). The available literature data reveal that age, dietary factors and lifestyle can affect the developmen
Externí odkaz:
https://doaj.org/article/bd4d5934c1884889a78c9ba9c9f01a78
Publikováno v:
Molecules, Vol 26, Iss 19, p 5759 (2021)
Due to their large possibility of the structure modification, alkylammonium gemini surfactants are a rapidly growing class of compounds. They exhibit significant surface, aggregation and antimicrobial properties. Due to the fact that, in order to ach
Externí odkaz:
https://doaj.org/article/798ccc1493924304bd96b1564a41071e
Publikováno v:
Molecules, Vol 25, Iss 18, p 4054 (2020)
A series of 21 azapolymethylene gemini surfactants were obtained. The synthesis of the title surfactants in one- or two-step reaction proceeds with good yields. The structure and the purity of the synthesized compounds were determined by 1H and 13C N
Externí odkaz:
https://doaj.org/article/0e6c8d6e0aab42dca11031c80c8c2940
Publikováno v:
Acta Chimica Slovenica, Vol 62, Iss 1, Pp 15-27 (2015)
The structure of seven bromoacetic substituted derivatives of bile acids are characterized by 1H MMR, 13C NMR, 2D NMR, FT-IR and mass spectrometry (ESI-MS) as well as PM5 semiempirical and B3LYP ab initio methods. Estimation of the pharmacotherapeuti
Externí odkaz:
https://doaj.org/article/87ae95c192674d99995286e936a4c463
Publikováno v:
Molecules, Vol 19, Iss 7, Pp 9419-9434 (2014)
New dimeric quaternary alkylammonium conjugates of sterols were obtained by two step reactions of ergosterol, cholesterol and cholestanol with bromoacetic acid bromide, followed by bimolecular nucleophilic substitution with N,N,N',N'-tetramethyl-1,3-
Externí odkaz:
https://doaj.org/article/e76e66b9d7c14faeba1448d52c7be918
Publikováno v:
Molecules, Vol 19, Iss 4, Pp 4212-4233 (2014)
New quaternary 3-phthalimidopropylammonium conjugates of steroids were obtained by reaction of sterols (ergosterol, cholesterol, cholestanol) and bile acids (lithocholic, deoxycholic, cholic) with bromoacetic acid bromide to give sterol 3β-bromoacet
Externí odkaz:
https://doaj.org/article/39208d93362f49ce80993c8f4ca431c0
Publikováno v:
Molecules, Vol 19, Iss 2, Pp 2557-2570 (2014)
A novel method for the synthesis of bile acid derivatives has been developed using “click chemistry”. Intermolecular 1,3-dipolar cycloaddition of the propargyl ester of bile acids and azide groups of 1,3,5-tris(azidomethyl)benzene gave a new quas
Externí odkaz:
https://doaj.org/article/f4be8d31e5b94f9cb30348cf4fc5640e
Publikováno v:
Molecules, Vol 18, Iss 12, Pp 14961-14976 (2013)
New quaternary alkylammonium conjugates of steroids were obtained by two step reaction of sterols (ergosterol, cholesterol, dihydrocholesterol) with bromoacetic acid bromide, followed by bimolecular nucleophilic substitution with a long chain tertiar
Externí odkaz:
https://doaj.org/article/4a4a577bd0c74ed39d7bdac1be01719e