Results 31 to 40 of about 21,587 (210)
GDP-Mannose 3,5-Epimerase: A View on Structure, Mechanism, and Industrial Potential
Frontiers in Molecular Biosciences, 2022 GDP-mannose 3,5-epimerase (GM35E, GME) belongs to the short-chain dehydrogenase/reductase (SDR) protein superfamily and catalyses the conversion of GDP-d-mannose towards GDP-l-galactose.
Koen Beerens +2 more
doaj +1 more source
Amino acid racemization dating of marine shells: a mound of possibilities [PDF]
, 2007 Shell middens are one of the most important and widespread indicators for human exploitation of marine resources and occupation of coastal environments. Establishing an accurate and reliable chronology for these deposits has fundamental implications for ...
Bailey, Geoffrey N. +5 more
core +4 more sources
Photocatalyzed Ring Expansion of α-Ketosulfonylaziridines: Ready Access to δ-Sultams. [PDF]
Angew Chem Int Ed EnglA novel radical–polar crossover (RPC) photoredox‐catalyzed reaction for the synthesis of δ‐sultams from N‐sulfonyl α‐ketoaziridines through a controlled ring opening–expansion process is presented. This method allows the easy access to sultams with an unprecedented substitution pattern in up to 85% yield and 2:1 d.r., and highlights the potential of ...
Mastandrea MM +7 more
europepmc +3 more sources
Stereoselective Epimerizations of Glycosyl Thiols
Organic Letters, 2017 Glycosyl thiols are widely used in stereoselective S-glycoside synthesis. Their epimerization from 1,2-trans to 1,2-cis thiols (e.g., equatorial to axial epimerization in thioglucopyranose) was attained using TiCl4, while SnCl4 promoted their axial-to-equatorial epimerization.
Lisa M. Doyle +5 more
openaire +3 more sources
Investigation of the Ergopeptide Epimerization Process
Computation, 2014 Ergopeptides, like ergocornine and a-ergocryptine, exist in an S- and in an R-configuration. Kinetic experiments imply that certain configurations are preferred depending on the solvent. The experimental methods are explained in this article. Furthermore,
Karsten Andrae +6 more
doaj +1 more source
Ostracode-based aminostratigraphy and aminochronology of a tufa system in central Spain [PDF]
, 2005 In the Priego area, central Spain, extensive tufa deposits are located in three small tributaries located at the head of the 1000 kmlong Tagus River. The deposits are originated after karst-origin running waters emerged from the confines of the canyons ...
Andrews +46 more
core +2 more sources
Advances in the chemistry, pharmacological diversity, and metabolism of 20(R)-ginseng saponins
Journal of Ginseng Research, 2020 Ginseng has been used as a popular herbal medicine in East Asia for at least two millennia. However, 20(R)-ginseng saponins, one class of important rare ginsenosides, are rare in natural products. 20(R)-ginseng saponins are generally prepared by chemical
Chaoming Wang +6 more
doaj +1 more source
Frontiers in Microbiology, 2016 Deoxynivalenol (DON) is a toxic secondary metabolite produced by several Fusarium species that infest wheat and corn. Food and feed contaminated with DON pose a health risk to both humans and livestock and form a major barrier for international trade ...
Jian Wei eHe +6 more
doaj +1 more source
Microbiota and bile acid profiles in retinoic acid-primed mice that exhibit accelerated liver regeneration. [PDF]
, 2015 Background & aimsAll-trans Retinoic acid (RA) regulates hepatic lipid and bile acid homeostasis. Similar to bile acid (BA), RA accelerates partial hepatectomy (PHx)-induced liver regeneration.
Hu, Ying +2 more
core +2 more sources
Synthesis of rare sugars via epimerization catalyzed by tin-organic frameworks
Current Research in Green and Sustainable ChemistryEpimerization of readily available monosaccharides presents an atom-efficient approach to expand the portfolio of rare monosaccharides. Here, we report tin-organic frameworks (Sn-OF) as a highly selective catalyst for synthesis of rare monosaccharides ...
Valérie Toussaint +3 more
doaj +1 more source