The aim of the study was to compare the impact of three synthesized chemical compounds
from a group of methylated flavonoids, ie 2′-hydroxy-4-methylchalcone (3), 4 …

Four compounds with lactone moiety were synthesized from chalcone 1 in three-or four-step
synthesis. γ-Bromo-δ-lactone 5 was the only product of bromolactonization of acid 4 …

The aim of this work was the examination of biological activity of three selected racemic cis-β-
aryl-δ-iodo-γ-lactones. Tested iodolactones differed in the structure of the aromatic fragment …

Starting from 1-acetyl-1-cyclohexene, three enantiomeric pairs (ee≥ 99%) of bicyclic δ-halo-
γ-lactones with cyclohexane ring were obtained in five-step synthesis. The key …

This paper presents the synthesis of γ-halo-δ-lactones, δ-iodo-γ-lactones and δ-hydroxy-γ-
lactones from readily available organic substrates such as trans-crotonaldehyde and aryl …

The influence of buffer type, co-solvent type, and acyl chain length was investigated for the
enantioselective hydrolysis of racemic 4-arylbut-3-en-2-yl esters using Lecitase™ Ultra (LU) …

Background: The study investigated four flavanone-derived γ-oxa-ε-lactones: a parent
unsubstituted compound and its three derivatives with the methoxy group in positions 2 …

Lecitase™ Ultra was immobilized on four different supports and tested for the first time as the
biocatalyst in the kinetic resolution of racemic allyl alcohols with the (E)-4-arylbut-3-en-2-ol …

Natural and synthetic lactones containing an aromatic ring exhibit a number of biological
properties, eg antiproliferative, antifeedant or antimicrobial activity. This review deals with …

Аннотация Актуальность и методика. Проведена оценка совместного использования
гамма-окталактона и хлортетрациклина в рационе бройлеров на рост, развитие …