Autor: Kwiecień, H. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Synthesis and antifungal activity of new salicylic acid derivatives
Autorzy:: Wodnicka, A.
Huzar, E.
Krawczyk, M.
Kwiecień, H.
Powiązania:: https://bibliotekanauki.pl/articles/778756.pdf
Data publikacji:: 2017
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: salicylic acid
salicylates
antifungal activity
Opis:: A simple one-step procedure for synthesis of 1-methoxy-1-oxoalkan-2-yl salicylates and 1-methoxy-1-oxoalkan-2-yl 2-[(1-methoxy-1-oxoalkan-2-yl)oxy]benzoates by reaction of salicylic acid with several methyl 2-bromoalkanoates was developed. The reactions were carried out in N,N-dimethylformamide (DMF) in the presence of anhydrous potassium carbonate. Conditions for regioselective synthesis of target compounds were established. The developed procedure could be easily applied in the industrial production process. The new salicylic acid derivatives were obtained with satisfactory yields and were characterized by MS and ¹H NMR spectra. The fungicidal activity of the prepared compounds was tested in vitro against seven species of plant pathogenic fungi. The best results were observed for 1-methoxy-1-oxoalkan-2-yl salicylates which showed moderate or good activity against Botrytis cinerea and Rhizoctonia solani.
Źródło:: Polish Journal of Chemical Technology; 2017, 19, 1; 143-148
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Biotransformation of hydroquinone and 4-hydroxybenzoic acid in Schisandra chinensis (Chinese magnolia vine) in vitro cultures
Autorzy:: Szopa, A.
Kwiecień, I.
Ekiert, H.
Powiązania:: https://bibliotekanauki.pl/articles/11824862.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:: Optimization of the process of biotransformation of hydroquinone into its β-D-glucoside – arbutin, was performed in agitated shoot cultures of Schisandra chinensis. The optimisation involved testing various concentrations of the precursor and different ways of administering it. Arbutin was accumulated mainly in the in vitro cultured biomass (85.2–98.6%). By optimizing the process, a 2.26-fold increase in the overall product content was obtained. The highest amount (17.8 mg·g–1 DW) was found after administering 384 mg·l–1 hydroquinone in a dose divided into two portions. An experiment with the biotransformation of 4-hydro- xybenzoic acid did not produce arbutin but a mixture of two products of glucosylation of the precursor – hydroxybenzoic acid 4-O-β-glucopyranoside and 4-hydroxybenzoic acid β-glucopyranosyl ester. The identity of all biotransformation products was confirmed by 1H-NMR analysis. The results for the production of arbutin by the biotransformation of hydroquinone are of potential practical importance. On the other hand, the fact of confirming the presence of two glucosylation products has a great cognitive value.
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2017, 16, 6; 57-66
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki