Results 81 to 90 of about 49,414 (256)

Enantiocontrolled Synthesis of Trialkyl-Substituted Stereogenic Carbons. A General Route to cis-3,5-Dialkyl γ-Lactones

, 2016
Lewis acid treatment of tertiary Co2(CO)6-propargylic alcohols having a stereochemically defined benzyloxy group at the γ-benzyl position yielded after cobalt demetalation sec-dialkyl bishomopropargylic alcohols in good yields.
Víctor S. Martín (727839), David Díaz (2493766)   +1 more
core   +1 more source

Fuyuan Huoxue Decoction Promotes Lumbar Interbody Fusion in Rats: Role of Macrophage‐Driven Inflammation and the TLR9/NF‐κB Pathway

Advanced Science, EarlyView.
Fuyuan Huoxue decoction improves lumbar interbody fusion in rats while reducing inflammatory macrophage activity and supporting bone‐forming stem cells. Experiments implicate extracellular DNA and TLR9/NF‐κB signaling in early responses. These findings point to coordinated control of inflammation and osteogenesis as a potential route to stronger spinal
Hongwei Gao, Han Wu, Shaorong Li, Weijian Wang, Yijian Guo, Shuai Cheng, Jiayi Sun, Jilong An, Wei Zhang   +8 more
wiley   +1 more source

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

Free-Radical Chemistry of Lactones:  Fragmentation of β-Lactones. The Beneficial Effect of Catalytic Benzeneselenol on Chain Propagation

, 2016
Free-Radical Chemistry of Lactones:  Fragmentation of β-Lactones.
Xue-Sheng Mo (2999301), David Crich (1314684)   +1 more
core   +1 more source

Indium-Catalyzed Direct Conversion of Lactones into Thiolactones Using a Disilathiane as a Sulfur Source

Molecules, 2018
An indium-catalyzed reaction of lactones and a disilathiane leading to thiolactones is described. The direct synthesis of thiolactones from lactones with an appropriate sulfur source is one of the most attractive approaches in organic and pharmaceutical ...
Yohei Ogiwara, Ken Takano, Shuhei Horikawa, Norio Sakai   +3 more
doaj   +1 more source

Scientific Opinion on Flavouring Group Evaluation 217 Revision 2 (FGE.217Rev2), consideration of genotoxic potential for α,β‐unsaturated ketones and precursors from chemical subgroup 4.1 of FGE.19: lactones

EFSA Journal, 2019
The Panel on Food Additives and Flavourings of the European Food Safety Authority was requested to evaluate the genotoxic potential of 12 flavouring substances from subgroup 4.1 of FGE.19 in the Flavouring Group Evaluation 217 (FGE.217).
EFSA Panel on Food Additives and Flavourings (FAF), Maged Younes, Gabriele Aquilina, Laurence Castle, Karl‐Heinz Engel, Paul Fowler, Maria Jose Frutos Fernandez, Peter Fürst, Ursula Gundert‐Remy, Rainer Gürtler, Trine Husøy, Peter Moldeus, Agneta Oskarsson, Romina Shah, Ine Waalkens‐Berendsen, Detlef Wölfle, Romualdo Benigni, Claudia Bolognesi, Kevin Chipman, Eugenia Cordelli, Gisela Degen, Daniel Marzin, Camilla Svendsen, Maria Carfì, Giorgia Vianello, Wim Mennes   +25 more
doaj   +1 more source

Halo lactones in the Bicyclo[2,2,2]octane series

, 1981
Stable lactones formed from bicyclo[2,2,2]oct-5-ene-2-carboxylic acids and their derivatives by halolactonization are shown to be γ-lactones.
RM Carman, SS Smith, DJ Brecknell, V Alberts   +3 more
core   +1 more source

Leishmanicidal Activity of Aliphatic and Aromatic Lactones: Correlation Structure-Activity

Molecules, 2009
Several aliphatic and aromatic lactones and two dimers were synthesized using the sequence: allylation - esterification - metathesis. These compounds were active in vitro against intracellular amastigotes of Leishmania panamensis.
Fernando Echeverri, Wilson Cardona, Sara Robledo, Winston Quiñones, Marcela Castaño   +4 more
doaj   +1 more source

Fungal Strains as Catalysts for the Biotransformation of Halolactones by Hydrolytic Dehalogenation with the Dimethylcyclohexane System

Molecules, 2012
Bicyclic chloro-, bromo- and iodo-γ-lactones with dimethylcyclohexane rings were used as substrates for bioconversion by several fungal strains (<em>Fusarium</em>, <em>Botrytis</em> and <em>Beauveria</em>). Most of the
Małgorzata Grabarczyk
doaj   +1 more source