Results 201 to 210 of about 8,953 (240)

3-Epimers of Caribbean ciguatoxins in fish and algae

Toxicon
Ciguatera poisoning (CP) is endemic to several subtropical and tropical regions and is caused by the consumption of fish contaminated with ciguatoxins (CTXs). The recent discovery of Caribbean CTXs (C-CTXs) in Gambierdiscus spp. isolated from the Caribbean resulted in the identification of a precursor analogue, C-CTX5, that is reduced into C-CTX1.
Mudge, Elizabeth M., Robertson, Alison, Uhlig, Silvio, McCarron, Pearse, Miles, Christopher O.   +4 more
openaire   +3 more sources

Problems and Pitfalls in the Analysis of Amygdalin and Its Epimer

Journal of Agricultural and Food Chemistry, 2015
α-[(6-O-β-d-Glucopyranosyl-β-d-glucopyranosyl)oxy]-(αR)-benzeneacetonitrile, or R-amygdalin, is the most common cyanogenic glycoside found in seeds and kernels of the Rosaceae family and other plant genera such as Passiflora. Many commercially important seeds are analyzed for amygdalin content.
Wahab, M. Farooq, Breitbach, Zachary S, Armstrong, Daniel W., Strattan, Rick, Berthod, Alain   +4 more
openaire   +2 more sources

Synthesis of (–)-shyobunone and its epimers

J. Chem. Soc., Chem. Commun., 1979
(–)-Shyobunone (10) and its epimers were synthesized from methylcyclobutene (1) and L-piperitone (2) in ca. 24% overall yield via irradiation followed by thermolysis of the reduced intermediate photoadduct (4).
John R. Williams, James F. Callahan
openaire   +1 more source

Analysis of Sugar Epimers Using Mass Spectrometry: N -Acetyllactosamine-6,6′-Disulfate and the 2′-Epimer

European Journal of Mass Spectrometry, 2004
Galβ1–4GlcNAc-6,6′-disulfate and 2′-epimer corresponding to Galβ1–4ManNAc-6,6′-disulfate were distinguished by mass spectrometry by utilizing fast atom bombardment (FAB), electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI) methods.
Yoko, Ohashi, Yoshiyuki, Itoh, Masayuki, Kubota, Kensaku, Hamada, Mamoru, Ohashi, Takashi, Hirano, Haruki, Niwa   +6 more
openaire   +2 more sources

Total Synthesis of (±)-Cordypyridones A and B and Related Epimers

Organic Letters, 2009
Efficient racemic synthesis of two antibacterial and antimalarial natural products, cordypyridones A and B, was achieved from inexpensive, commercially available starting materials in an overall yield of 15% (8% and 7%, respectively). This convergent synthesis utilizes a key coupling step of two fragments and the subsequent functional group ...
Ian L, Jones, Felicity K, Moore, Christina L L, Chai   +2 more
openaire   +2 more sources

epimer, n.

2023
openaire   +1 more source

Dynamics of the vitamin D C3-epimer levels in preterm infants

Clinical Chemistry and Laboratory Medicine, 2023
Vladimir Palicka, Martin Stepán, Tomáš Matejek   +2 more
exaly  

Epimed Needles

Biomedical Safety & Standards, 2018
openaire   +1 more source

A critical review of analytical methods for ergot alkaloids in cereals and feed and in particular suitability of method performance for regulatory monitoring and epimer-specific quantification

Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment, 2021
Stephen Wai-Cheung Chung
exaly  

THE SYNTHESES OF LACTOSE AND ITS EPIMER

Journal of the American Chemical Society, 1942
W. T. Haskins, Raymond M. Hann, C. S. Hudson   +2 more
openaire   +1 more source