Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Jarosław Lewkowski"'
Autor:
Jarosław Lewkowski, Maria Rodriguez Moya, Anna Wrona-Piotrowicz, Janusz Zakrzewski, Renata Kontek, Gabriela Gajek
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 12, Iss 1, Pp 1229-1235 (2016)
A large series of variously substituted amino(pyren-1-yl)methylphosphonic acid derivatives was synthesized using a modified aza-Pudovik reaction in 20–97% yields. The fluorescence properties of the obtained compounds were investigated revealing tha
Externí odkaz:
https://doaj.org/article/fe7d25f54bbc4abe90e6be90fb06f137
Publikováno v:
Molecules, Vol 25, Iss 3, p 658 (2020)
The incidence of gastrointestinal cancers is increasing every year. Irinotecan (CPT-11), a drug used in the treatment of colorectal cancer and gastric cancer, is metabolized by carboxylesterases to an active metabolite, SN-38, which is more cytotoxic
Externí odkaz:
https://doaj.org/article/1ba624a0aba84a41acd474fcac456f17
Autor:
Diana Rogacz, Jarosław Lewkowski, Marta Siedlarek, Rafał Karpowicz, Anna Kowalczyk, Piotr Rychter
Publikováno v:
Materials, Vol 12, Iss 12, p 2018 (2019)
The aim of this work was to evaluate the impact of the thiophene-derived aminophosphonates 1−6 on seedling emergence and growth of monocotyledonous oat (Avena sativa) and dicotyledonous radish (Raphanus sativus L.), and phytotoxicity against three
Externí odkaz:
https://doaj.org/article/5fe9e06640ba49a1b98bfe71288a36b1
Autor:
Diana Rogacz, Jarosław Lewkowski, Zbigniew Malinowski, Agnieszka Matusiak, Marta Morawska, Piotr Rychter
Publikováno v:
Molecules, Vol 23, Iss 12, p 3173 (2018)
Background: The aim of this work was to evaluate phytotoxicity of the thiophene derivatives against three persistent weeds of a high degree of resistance (Galinsoga parviflora Cav., Rumex acetosa L., and Chenopodium album) as well as their ecotoxicol
Externí odkaz:
https://doaj.org/article/9c755b179f254b95ba608c5e2768b77f
Publikováno v:
Molecules, Vol 22, Iss 7, p 1132 (2017)
A wide range of biological activities of aminophosphonates predisposes them to find applications as anticancer, antiviral, antimicrobial, antifungal, or herbicidal agents. Despite a number of positive aspects of the use of aminophosphonates, their ap
Externí odkaz:
https://doaj.org/article/3fef1656a1ba483ca8078e8d573bc5e1
Autor:
Jarosław Lewkowski, Maria Rodriguez Moya, Marta Chmielak, Diana Rogacz, Kamila Lewicka, Piotr Rychter
Publikováno v:
Molecules, Vol 21, Iss 7, p 936 (2016)
Four diphenyl pyrene-derived aminophosphonates were synthesized. Attempts were made to synthesize diphenyl N-(R)-α-methylbenzylamino(pyren-1-yl)methylphosphonate (3e) in order to obtain the chiral aminophosphonate bearing a pyrene moiety. Because th
Externí odkaz:
https://doaj.org/article/0ef5addd29a8457ba196daef81dc4793
Autor:
Jarosław Lewkowski, Zbigniew Malinowski, Agnieszka Matusiak, Marta Morawska, Diana Rogacz, Piotr Rychter
Publikováno v:
Molecules, Vol 21, Iss 6, p 694 (2016)
The aim of this work was to synthesize selected thiophene-derived aminophosphonic systems and evaluate the phytotoxicity of newly obtained products according to the OECD 208 Guideline. Seven new thiophene-derived N-substituted dimethyl aminomethylpho
Externí odkaz:
https://doaj.org/article/a0a2b0e05bfa484bb1c9a81d0eeeb91b
Publikováno v:
Chemical Papers. 73:365-374
Ten aminophosphonates bearing 2-nitrofuran moiety and two N-aryl 5-nitro-furfuralaldimines, namely, N-(2-nitrofurfurylidene)-p-toluidine and N-(2-nitrofurfurylidene)-p-anisidine, were tested in aspect of their antibacterial action. O,O′-diphenyl de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::795723b1a2c44766c1c1d520ab2890d3
https://doi.org/10.1007/s11696-018-0597-1
https://doi.org/10.1007/s11696-018-0597-1
Autor:
Diana Rogacz, Rafał Karpowicz, Paulina Tokarz, Aleksandra Czopor, Małgorzata Stasiak, Piotr Rychter, Jarosław Lewkowski, Adrianna Król
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 193:423-436
The synthesis of a series of N-sulfonylaminophosphonates 2aA-2dC and evaluation of their cytotoxicity and ecotoxicity is described. N-sulfonylaminophsophonates 2aA-2dC were obtained by addition of dialkyl phosphites to azomethine bonds of sulfonimine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10fc44abdbe3f8573328ab3789ff1360
https://doi.org/10.1080/10426507.2018.1424712
https://doi.org/10.1080/10426507.2018.1424712
Autor:
Jarosław Lewkowski, Grzegorz Grabowski
Publikováno v:
Letters in Organic Chemistry. 16:697-699
The easy and cheap method for the preparation of 5 hydroxymethylfurfural in a satisfactory yield is described in this paper. The method is a practical modification of the old methodology elaborated 74 years ago. Its requirements are so simple that it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd4f85230312cf1b42821c0ae1713ea7
https://doi.org/10.2174/1570178615666181025112921
https://doi.org/10.2174/1570178615666181025112921