Results 121 to 130 of about 98,587 (340)
Química Nova, 2002 The alkene 2,4-dimethyl-8-oxabicyclo[3.2.1]-oct-6-en-3-one (3) was converted to 1,3,10-trimethyl-8-oxabicyclo[5.3.0]-dec-3-ene-2,9-dione (7) and 1,3-dimethyl-8-oxabicyclo[5.3.0]-dec-3-ene-2,9-dione (8) with a 55% overall yield in both cases. Lactones (7)
Barbosa Luiz Cláudio de Almeida +2 more
doaj
Sesquiterpene lactones isolated from a medicinal plant of the Venezuelan Andes [PDF]
, 2008 Jaime Delgado +4 more
openalex +1 more source
Chemistry – A European Journal, EarlyView.One‐pot transition‐metal‐free methods for the synthesis of all three bonds of the alkyne's triple bond are reviewed. After analysis of several named reactions and discussion of improvements, recent advances in the synthesis of alkynes are discussed. Each section contains a proposed reaction mechanism and analysis of the strengths and weaknesses of the ...
Eugene Kim +4 more
wiley +1 more source
In Vitro Metabolism of Helenalin Acetate and 11α,13-Dihydrohelenalin Acetate: Natural Sesquiterpene Lactones from Arnica [PDF]
, 2022 Franziska M. Jürgens +4 more
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Chemistry – A European Journal, EarlyView.A photoinduced, regio‐ and chemoselective γ‐alkylation of 2‐silyloxyfurans with a‐bromoketones was achieved by exploiting a photoredox catalytic process promoted by blue light. This approach provides practical and efficient access to chiral, ε‐ketobutenolides, in one step and high yields.
Debora Guazzetti +9 more
wiley +1 more source
Production d'arômes de type lactone par des levures [PDF]
Biotechnologie, Agronomie, Société et Environnement, 2010 Production of aroma lactones by yeasts. Lactones are widely distributed in foods and beverages as aroma compounds. Their extraction from natural products is very expensive.
Alchihab, M. +3 more
doaj
Characterization of N-Acyl-homoserine Lactones (AHLs)-Deficient Clinical Isolates of Pseudomonas aeruginosa [PDF]
, 2014 Zhenqiu Shang +3 more
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Chemistry – A European Journal, EarlyView.A series of structurally diverse exoglycals was synthesized using a modified Julia‐olefination approach from sugar‐derived precursors. These glycosidase transition‐state mimics were further diversified via CuAAC chemistry to yield triazole‐conjugated analogues.
Elisa Ospanow +2 more
wiley +1 more source
Cryptic post-transition state bifurcations that reduce the efficiency of lactone-forming Rh-carbenoid C-H insertions. [PDF]
, 2017 Byproducts of chemical reactions are generally thought to result from the competition between two reaction pathways, each with its own rate-determining transition state structure.
Hare, Stephanie R, Tantillo, Dean J
core
α-Acylamino-β-lactone N-Acylethanolamine-hydrolyzing Acid Amidase Inhibitors Encapsulated in PLGA Nanoparticles: Improvement of the Physical Stability and Protection of Human Cells from Hydrogen Peroxide-Induced Oxidative Stress [PDF]
, 2022 Agnese Gagliardi +4 more
openalex +1 more source