8 Papers
28 Citations
Monika Siepka is an academic researcher from Wroclaw University of Environmental and Life Sciences. The author has contributed to research in topics: Chemistry & Lactone. The author has an hindex of 5, co-authored 7 publications.
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Papers
Enantioselective reduction of flavanone and oxidation of cis- and trans-flavan-4-ol by selected yeast cultures
Tomasz Janeczko,Monika Dymarska,Monika Siepka,Radosław Gniłka,Agnieszka Leśniak,Jarosław Popłoński,Edyta Kostrzewa-Susłow +6 more
TL;DR: Experiments investigated stereochemistry of reduction of racemic flavanone and a concurrent competitive process of oxidation, taking place in cultures of live yeast strains, and some of the tested strains demonstrated an excellent capability for enantioselective oxidation of (±)-cis-flavan-4-ol and (±), obtained by chemical synthesis.
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Synthesis and Antimicrobial Activity of Methoxy- Substituted γ-Oxa-ε-lactones Derived from Flavanones.
Witold Gładkowski,Monika Siepka,Tomasz Janeczko,Edyta Kostrzewa-Susłow,Jarosław Popłoński,Marcelina Mazur,Barbara Żarowska,Wojciech Łaba,Gabriela Maciejewska,Czesław Wawrzeńczyk +9 more
TL;DR: Six γ-oxa-ε-lactones, 4-phenyl-3,4-dihydro-2H-1,5-benzodioxepin-2-one and its five derivatives with methoxy groups in different positions of A and B rings, were synthesized from corresponding flavanones.
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Convenient Chemoenzymatic Route to Optically Active β-Aryl-δ-iodo-γ- lactones and β-Aryl-γ-iodo-δ-lactones with the Defined Configurations of Stereogenic Centers
TL;DR: In this paper, enantiomerically enriched allyl alcohols with an (E)-4-phenylbut-3-en-2-ol system were obtained by lipase-catalyzed transesterification Alcohols were subjected to orthoacetate modification of the Claisen rearrangement.
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Kinetic resolution of (E)-4-(2′,5′-dimethylphenyl)-but-3-en-2-ol and (E)-4-(benzo[d][1′,3′]dioxol-5′-yl)-but-3-en-2-ol through lipase-catalyzed transesterification
TL;DR: In this paper, a short and efficient chemoenzymatic pathway was developed to produce both enantiomeric forms of allyl alcohols possessing a bulky aromatic substituent at the stereogenic center.
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Convenient Chemoenzymatic Route to Optically Active β-Aryl-δ-iodo-γ-lactones and β-Aryl-γ-iodo-δ-lactones with the Defined Configurations of Stereogenic Centers.
TL;DR: In this paper, enantiomerically enriched allyl alcohols with an (E)-4-phenylbut-3-en-2-ol system were synthesized in both enantiomeic and enantioregressive forms.
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