Results 71 to 80 of about 47,838 (205)
Investigação fitoquímica do extrato etanólico de Hedyosmum brasiliense Miq., Chloranthaceae [PDF]
, 2012 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-graduação em Farmácia, Florianópolis, 2011Hedyosmum brasiliense é um arbusto aromático que pertence à família Chloranthaceae e é popularmente ...
Amoah, Solomon Kweku Sagoe
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, 2014 The cell-to-cell communication of microorganisms is known to be via exertion of certain chemical compounds (signal molecules) and is referred to as quorum sensing (QS). QS phenomenon is widespread in microbial communities.
Esmaeilishirazifard, Elham +7 more
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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 +3 more
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Bulletin of the Agricultural Chemical Society of Japan, 1958 α-Exo-unsaturated-γ-butyrolactones were prepared. Reduction of α-benzylidene succinic acid esters with lithium aluminum hydride afford 2-benzylidene-1,4-butanediols. Manganese dioxide oxidation of glycols followed by silver oxide oxidation and lactonization afford α-benzylidene-γ-butyrolactones. Thus α-benzylidene-, α-anisylidene-, α-veratrylidene-, α-(
Kyôhei YAMASHITA, Masanao MATSUI
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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 +2 more
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Synthesis of (+)-Marmelo Lacton A and (+)-Marmelo Lactone B [PDF]
Agricultural and Biological Chemistry, 1983 NISHIDA, Yoshihiro +2 more
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, 2014 Citation: 'lactones' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.L03439 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
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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
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Philosophical Transactions of the Royal Society B: Biological SciencesSesquiterpene lactones (STLs) are a prominent group of plant secondary metabolites predominantly found in the Asteraceae family and have multiple ecological roles and medicinal applications. This review describes the evolutionary and ecological significance of STLs, highlighting their roles in plant defence mechanisms against herbivory and as ...
Olivia Agatha +3 more
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Total Asymmetric Syntheses of β-Hydroxy-δ-lactones via Umpolung with Sulfur Dioxide
Cyclic stereotriads and stereotetrads of the β-hydroxy-δ-lactone type, e.g. prelactones B and E, common in polyketides and polypropionates, are prepared via SO2-induced oxyallylations of enoxysilanes with (1E,3Z)-1-(1-phenylethoxy)penta-1,3-dien-3-yl ...
Exner, Claudia +4 more
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