Results 51 to 60 of about 173,009 (382)

Azetidine synthesis by La(OTf)3-catalyzed intramolecular regioselective aminolysis of cis-3,4-epoxy amines

Frontiers in Chemistry, 2023
Azetidine is a prevalent structural motif found in various biologically active compounds. In this research paper, we report La(OTf)3-catalyzed intramolecular regioselective aminolysis of cis-3,4-epoxy amines to afford azetidines.
Yuse Kuriyama, Yusuke Sasano, Yoshiharu Iwabuchi   +2 more
doaj   +1 more source

Recent Developments in Stereoselective Reactions of Sulfonium Ylides

Organics, 2022
This review describes advances in the literature since the mid-1990s in the area of reactions of sulfonium ylide chemistry, with particular attention paid to stereoselective examples.
Mukulesh Mondal, Sophie Connolly, Shi Chen, Shubhanjan Mitra, Nessan J. Kerrigan   +4 more
doaj   +1 more source

Green tea polyphenol-reduced graphene oxide: derivatisation, reduction efficiency, reduction mechanism and cytotoxicity [PDF]

, 2014
This paper reports on the derivatisation, reduction efficiency, reduction mechanism and cytotoxicity of green tea polyphenol-reduced graphene oxide (GTP-RGO).
Abdullah, M. F., Zakaria, R., Zein, S. H. S.   +2 more
core   +1 more source

Exploring Sesquiterpene Lactones from Saussurea lappa: Isolation, Structural Modifications, and Herbicide Bioassay Evaluation

Plants
Considering the resistance of weeds to different herbicides with different mechanisms of action, the search for new, more selective compounds with low toxicity to other species in nature has been very important for the development of agriculture. Because
Elson S. Alvarenga, Francisco A. Macías, Stephani S. Ferreira, Juan C. G. Galindo, José M. G. Molinillo   +4 more
doaj   +1 more source

Theoretical Study on Highly Active Bifunctional Metalloporphyrin Catalysts for the Coupling Reaction of Epoxides with Carbon Dioxide [PDF]

, 2016
Highly active bifunctional metalloporphyrin catalysts were developed for the coupling reaction of epoxides with CO2 to produce cyclic carbonates. The bifunctional catalysts have both quaternary ammonium halide groups and a metal center.
Ahmadi, Aida, Becke, Castro-Gómez, Chen, Chen, Cokoja, Cokoja, Comerford, D'Elia, Darensbourg, Ema, Ema, Ema, Foltran, Jin, Kielland, Kruper, Lee, Li, Li, Liu, Ma, Maeda, Maeda, Maeda, Martín, Paddock, Qin, Reed, Reed, Rocha, Stewart, Sun, Tlili, Tomasi, Tsuji, Wang, Wang, Wang, Whiteoak, Whiteoak   +41 more
core   +1 more source

Photoenzymatic epoxidation of styrenes

Chemical Communications, 2019
Photochemical reduction of flavin adenine dinucleotide (FAD) enables the direct, non-enzymatic regeneration of styrene monooxygenase for enantiospecific epoxidation reactions.
Morten M. C. H. van Schie, Caroline E. Paul, Isabel W. C. E. Arends, Frank Hollmann   +3 more
openaire   +6 more sources

Total Synthesis of Resveratrone and iso‐Resveratrone

ChemistryOpen, 2022
The first total synthesis of resveratrone and iso‐resveratrone based on an epoxide olefination approach is described. The pivotal reaction proceeds by insertion of the lithiated epoxide into a boronic ester and subsequent syn‐elimination.
Stefan Fritsch, Nazli Aldemir, Jan Balszuweit, Kevin Bojaryn, Prof. Dr. Jens Voskuhl, Dr. Christoph Hirschhäuser   +5 more
doaj   +1 more source

Enzyme-catalyzed cationic epoxide rearrangements in quinolone alkaloid biosynthesis. [PDF]

, 2017
Epoxides are highly useful synthons and biosynthons for the construction of complex natural products during total synthesis and biosynthesis, respectively.
Garcia-Borràs, Marc, Hirayama, Yuichiro, Houk, KN, Li, Dehai H, Li, Li, Tang, Mancheng C, Tang, Yi, Watanabe, Kenji, Zou, Yi   +8 more
core  

Enantioselective synthesis of (+)-petromyroxol, enabled by rhodium-catalyzed denitrogenation and rearrangement of a 1-sulfonyl-1,2,3-triazole [PDF]

, 2015
Petromyroxol is a non-racemic mixture of enantiomeric oxylipids isolated from water conditioned with larval sea lamprey. The (+)-antipode exhibits interesting biological properties but only 1 mg was isolated from >100000 L of water.
Boyer, Alistair
core   +2 more sources

Enzyme-Catalyzed Cationic Epoxide Rearrangements in Quinolone Alkaloid Biosynthesis

Nature Chemical Biology, 2016
Epoxides are highly useful synthons and biosynthons in the construction of complex natural products during total synthesis and biosynthesis, respectively.
Yi Zou, M. Garcia‐Borràs, Mancheng Tang, Yuichiro Hirayama, Dehai Li, Li Li, Kenji Watanabe, K. Houk, Yi Tang   +8 more
semanticscholar   +1 more source