Results 91 to 100 of about 49,414 (256)

Síntese one-pot de a-arilideno- ð-lactonas a partir de brometos alílicos funcionalizados : estudo das etapas reacionais e caracterização dos intermediários [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2014Neste trabalho foi estudada a síntese de a-arilideno-ð-lactonas utilizando alguns dos ...
Conceição, Henrique Pinheiro da
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Molecular structures of cited lactones.

, 2018
Molecular structures of cited lactones.
Mariacristina Gagliardi (4522168), Angelo Bifone (232236)   +1 more
core   +1 more source

Catalytic and selective synthesis of lactones and bis-lactones by palladium acetate/1,4-bis(diphenylphosphino) butane system under syngas conditions

, 2003
The combination of palladium acetate and 1,4-bis(diphenylphosphino)butane (dppb) proved once again to form an effective catalytic system for the selective cyclocarbonylation of 2-allylphenols and bis-2-allylphenols.
MELE, Giuseppe Agostino, B. EL ALI, VASAPOLLO, Giuseppe   +2 more
core   +1 more source

Metabolism of Gamma-Lactones by rat liver preparations in vitro [PDF]

, 2018
As part of an attempt to elucidate the mechanism of carcinogenesis by αβ-unsaturated y-lactones, a systematic study of the metabolism of a group of saturated and  αβ-unsaturated lactones was performed.
Raubenheimer, H.G., de Kock, D.H.
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Cycloaddition Reactions of C,N-Diphenylnitrone to Methylene-γ-butyrolactones

Molecules, 2000
Cycloaddition of C,N-diphenylnitrone to α-methylene-γ-butyrolactone afforded two diastereomeric 5-spirosubstituted isoxazolidines with high selectivity.
Andrea Goti, Cristina Faggi, Franca M. Cordero, Martina Cacciarini   +3 more
doaj   +1 more source

New γ-Halo-δ-lactones and δ-Hydroxy-γ-lactones with Strong Cytotoxic Activity

, 2019
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 bromides.
Magdalena Chmiela, Sylwia Ewa Kutniewska, Agata Białońska, Barbara Gawdzik, Łukasz Lechowicz, Weronika Gonciarz, Sylwia Ewa Kutniewska, Angelika Kamizela, Mariusz Urbaniak   +8 more
core   +1 more source

Broadening the scope of Baeyer–Villiger monooxygenase activities toward α,β-unsaturated ketones: a promising route to chiral enol-lactones and ene-lactones

, 2014
International audienceThree regiodivergent Baeyer–Villiger mono-oxygenases (enantioselectively) oxidized a series of cyclic α,β-unsaturated ketones into (chiral) either enol-lactones or ene-lactones.
Mariage, A., de Berardinis, Véronique, Hamzé, K., Duquesne, Katia, Petit, J.-L., Reignier, T., Alphand, V.   +6 more
core   +1 more source

Solid-Phase Synthesis of Optically Active Substituted 2 Aminofuranones Using an Activated Carbonate Linker

Molecules, 2009
An efficient three-step solid-phase synthesis of diverse 3,5-disubstituted-2-aminofuranones has been developed. α-Hydroxy acids loaded on a nitrophenyl carbonate derivative of Wang resin are used as acylating agents for the C-acylation of active ...
Dimitris Matiadis, Kyriakos C. Prousis, Olga Igglessi-Markopoulou   +2 more
doaj   +1 more source

Improving Pseudomonas fluorescens esterase for hydrolysis of lactones

, 2017
Although both acyclic esters and lactones contain ester functional groups, their shapes differ and most esterases are poor catalysts for hydrolysis of lactones.
Qingbao Ding, Romas J. Kazlauskas
core   +1 more source

AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury

, 2022
Hepatology, EarlyView.
Robert J. Fontana, Iris Liou, Adrian Reuben, Ayako Suzuki, M. Isabel Fiel, William Lee, Victor Navarro   +6 more
wiley   +1 more source