Results 111 to 120 of about 15,469 (227)

Coadsorption of Cinchona Alkaloids on Supported Palladium: Nonlinear Effects in Asymmetric Hydrogenation and Resistance of Alkaloids Against Hydrogenation [PDF]

, 2018
The transient behavior of the adsorption of cinchona alkaloid modifiers on Pd/TiO2 has been investigated in situ during the enantioselective hydrogenation of 4-methoxy-6-methyl-2-pyrone (1).
Baiker, A., Huck, W.-R, Mallat, T.
core  

Penichrypyrone A: A New γ-Pyrone Derivative from the Sponge-Derived Fungus LS18

Natural Product Communications, 2019
A new γ -pyrone derivative, penichrypyrone A ( 1 ), along with 4 known compounds, conichaetone E ( 2 ), janthinone ( 3 ), mrlactonel ( 4 ), and aspergillusene A ( 5 ), was isolated from the EtOAc extract of the sponge-derived fungus Penicillium ...
Xiaoping He, Lu Ren, Lijian Ding, Jianzhou Xu, Bin Zhang, Weiyan Zhang, Shan He   +6 more
doaj   +1 more source

New marine cytotoxic bispyrones : absolute sterochemistry of onchitriols I and II [PDF]

, 1992
The complete absolute stereochemistry of two new cytotoxic marine polyproniates isolated from the saponified extract of the pulmonate mollusc #Onchidium sp.$, onchitriol 1 and 2 (4,5), was established using Mosher-Trost's methodollogy.
Debitus, Cécile, Riguera, R., Rodriguez, J.   +2 more
core  

Pyrone Biomonitored Synthesis

Journal of the Mexican Chemical Society
Abstract. Here we report the first biomonitored synthesis of pyrones in the search for molecules with antimicrobial action against pathogenic bacteria and fungi. Pyrones were synthesized from methyl acetoacetate pyrone rings followed by deacetylation, methylation, and aldol condensation reactions to obtain styrylpyrones with yields between 39 and 93 %.
Clécio Souza Ramos, Marcílio Wagner Fontes Silva   +1 more
openaire   +1 more source

Catalyst-Free Gas-Phase Synthesis of Pyrones via Thermally Induced Aldol Condensation of Acetoacetate Derivatives Using GC-MS. [PDF]

ACS Omega
Garcia F, Otoo B, Agyekum I.
europepmc   +1 more source

Rapid Discovery of Antifungal α-Pyrone Analogs from <i>Diaporthe kyushuensis</i> ZMU-48-1 via an HSQC-Based DeepSAT Strategy. [PDF]

J Fungi (Basel)
Yuan S, Zheng J, Wu Y, Wang X, Wang H, Yan M, Yin T.   +6 more
europepmc   +1 more source

Multicomponent Green Synthesis Involving Aryl Aldehydes and Trapped Enols: Dimerization over Cyclization. [PDF]

ACS Omega
Zingales SK, Gibson M, Tapia-Hernandez J, Jenkins K, Munzing M, Dickerson G, Speikers S, Frazer DJ, Padgett CW, Wentzel MT.   +9 more
europepmc   +1 more source

Switching Metazoan Fatty Acid Synthase Between Reducing and Nonreducing Elongation Mode via Programming of the Ketoreductase Domain. [PDF]

Chembiochem
L Ludig D, Herber A, Grininger M.
europepmc   +1 more source

Platform Potential of <i>Sphingobium lignivorans</i> SYK-6 for Lignin Valorization via Biological Funneling. [PDF]

J Agric Food Chem
Kamimura N, Endo M, Nakamura B, Akiyama T, Kato R, Kawazoe M, Fujita M, Araki T, Suzuki Y, Michinobu T, Otsuka Y, Nakamura M, Masai E.   +12 more
europepmc   +1 more source

Cascade Iodine-Catalyzed Synthesis of Nitrogenated Aromatics from 2-Pyrones. [PDF]

J Org Chem
Souza BB, Cabral TLG, Varriano CB, Tormena CF, Pastre JC.   +4 more
europepmc   +1 more source