Results 51 to 60 of about 47,838 (205)

Algicidal lactones from the marine Roseobacter clade bacterium Ruegeria pomeroyi

Beilstein Journal of Organic Chemistry, 2012
Volatiles released by the marine Roseobacter clade bacterium Rugeria pomeroyi were collected by use of a closed-loop stripping headspace apparatus (CLSA) and analysed by GC–MS.
Ramona Riclea, Julia Gleitzmann, Hilke Bruns, Corina Junker, Barbara Schulz, Jeroen S. Dickschat   +5 more
doaj   +1 more source

Novel Halolactones Derived from Vanillin: Design, Synthesis, Structural Characterization, and Evaluation of Antiproliferative and Hemolytic Activities

Molecules
A series of novel γ-halo-δ-lactones and δ-halo-γ-lactones bearing a phenolic ring at the β-position were synthesized from vanillin. The divergent seven-step synthetic route commenced with the benzyl protection of the hydroxy group of the starting ...
Anna Dunal, Witold Gładkowski, Ewa Dejnaka, Joanna Sulecka-Zadka, Aleksandra Pawlak, Aleksandra Włoch, Hanna Pruchnik, Gabriela Maciejewska   +7 more
doaj   +1 more source

Bioactive polyketides and meroterpenoids from the mangrove-derived fungus Talaromyces flavus TGGP35

Frontiers in Microbiology
Six new polyketides, which includes three new lactones (talarotones A–C) (1–3), one new polyketide (talarotide A) (4), two new polyenes (talaroyenes A, B) (5, 6), together with one new meroterpenoid (talaropenoid A) (7) and 13 known compounds (8–20) were
Jin Cai, Jin Cai, Xueming Zhou, Xueming Zhou, Bin Wang, Bin Wang, Xuelong Zhang, Xuelong Zhang, Mengyao Luo, Mengyao Luo, Longtao Huang, Longtao Huang, Ruoxi Wang, Ruoxi Wang, Yonghao Chen, Yonghao Chen, Xiaoyang Li, Xiaoyang Li, Youping Luo, Youping Luo, Guangying Chen, Guangying Chen, Fei Cao, Guolei Huang, Guolei Huang, Caijuan Zheng, Caijuan Zheng   +26 more
doaj   +1 more source

Selamectin is the avermectin with the best potential for Buruli ulcer treatment [PDF]

, 2015
A comprehensive analysis was done to evaluate the potential use of anti-parasitic macrocyclic lactones (including avermectins and milbemycins) for Buruli ulcer (BU) therapy.
Gerd Pluschke, Scherr, Nicole, Thompson, Charles J., Charles J Thompson, Nicole Scherr, Ramón-García, Santiago, Santiago Ramón-García, Pluschke, Gerd   +7 more
core   +2 more sources

Scientific Opinion on Flavouring Group Evaluation 10, Revision 3 (FGE.10Rev3): Aliphatic primary and secondary saturated and unsaturated alcohols, aldehydes, acetals, carboxylic acids and esters containing an additional oxygenated functional group and lactones from chemical groups 9, 13 and 30

EFSA Journal, 2012
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 63 flavouring substances in the Flavouring Group Evaluation 10, including additional two substances in this ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Diastereoselective Osmylation and Hydroboration of β,γ-Unsaturated N,N-Diisopropylamides and Acid-Catalyzed Conversion to δ-Lactones

, 2016
The title reactions of β,γ-unsaturated N,N-diisopropylamides occur with useful diastereofacial selectivity. The major diol isomer from osmylation of alkenes 1, 10, 11, and 12 in the presence of TMEDA at −78 °C corresponds to the facial preference shown ...
A. W. Kruger (3009198), E. Vedejs (2724457)   +1 more
core   +2 more sources

Siloxy Effect on Intramolecular Cyclization of Tungsten−η¹-Siloxypropargyl Complexes:  Formation of 2,5-Dihydrofurans versus γ-Lactones

, 2016
Treatment of tungsten−η1-4-(triethylsiloxy)propargyl and η1-4-(tripropylsiloxy)propargyl compounds 8a−d and 9a−d with CF3CO2H in cold CH2Cl2 yielded a mixture of tungsten η1-2,5-dihydrofurans 10a−d and η3-syn-γ-lactones 4a−d.
Malapaka Chandrasekharam (1958626), Fen-Ling Liao (2717692), Shwu-Ju Shieh (2539972), Sue-Lein Wang (2072275), Jang-Shyang Fan (2997798), Rai-Shung Liu (1393513)   +5 more
core   +1 more source

Diastereoselective cyclization of lactones via Brønsted acid catalysis [PDF]

, 2020
Chiral molecules play a vital role in supporting biologically effective drugs. Consequently, a majority of pharmaceutical companies seek to isolate the enantiomers of molecules in drug design.
Alexander, Symone A., NC DOCKS at The University of North Carolina at Greensboro   +1 more
core  

Scientific Opinion on Flavouring Group Evaluation 10, Revision 2 (FGE.10Rev2): Aliphatic primary and secondary saturated and unsaturated alcohols, aldehydes, acetals, carboxylic acids and esters containing an additional oxygenated functional group and lactones from chemical groups 9, 13 and 30

EFSA Journal, 2011
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 61 flavouring substances in the Flavouring Group Evaluation 10, Revision 2, using the Procedure in Commission ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Investigation of Lactones as Innovative Bio-Sourced Phase Change Materials for Latent Heat Storage

Molecules, 2019
In the presented work, five bio-based and bio-degradable cyclic esters, i.e. lactones, have been investigated as possible phase change materials for applications in latent heat storage systems. Commercial natural lactones such as ε-caprolactone and &
Rebecca Ravotti, Oliver Fellmann, Nicolas Lardon, Ludger J. Fischer, Anastasia Stamatiou, Jörg Worlitschek   +5 more
doaj   +1 more source