Results 41 to 50 of about 1,835 (170)
Angewandte Chemie, Volume 138, Issue 37, 7 September 2026.Eine divergente Aldehyd‐Funktionalisierungssequenz, ermöglicht durch ein anomeres Amid, erlaubt den Ein‐Topf‐Zugang zu unsymmetrischen Harnstoffen, Carbamaten, Thiocarbamaten, Thioestern und Amiden. Entscheidend für diese Transformation ist die Bildung von N‐Boc‐Hydroxamat‐Intermediaten, die als Plattformen für eine orthogonale Aktivierung über Lossen ...
Jasper L. Tyler +6 more
wiley +1 more source
Separation of sterols by vapor-programmed thin-layer chromatography
Journal of Lipid Research, 1970 By vapor-programmed thin-layer chromatography on silica gel, it was possible to separate cholestanol from cholesterol and stigmastanol from β-sitosterol. The method was applied for the analysis of β-sitosterol-3-14C.
W.H.J.M. Wientjens +2 more
doaj +1 more source
Frontiers in Pediatrics, 2020 Background: Cerebrotendinous xanthomatosis (CTX) is an inborn disorder of bile acid synthesis which causes progressive accumulation of toxic metabolites in various organs, particularly in brain and tendons.
Irene Degrassi +7 more
doaj +1 more source
Angewandte Chemie International Edition, Volume 65, Issue 37, 7 September 2026.An anomeric amide‐enabled divergent aldehyde functionalization sequence provides one‐pot access to unsymmetrical ureas, carbamates, thiocarbamates, thioesters, and amides. Key to this transformation is the formation of N‐Boc‐hydroxamate intermediates, which serve as platforms for orthogonal activation via Lossen‐type rearrangements, single‐electron ...
Jasper L. Tyler +6 more
wiley +1 more source
7α-Hydroxylation of cholestanol by rat liver microsomes
Journal of Lipid Research, 1968 In a study of the mechanism whereby 5α-bile acids are formed from cholestanol, the 7α-hydroxylation of cholestanol was investigated in rat liver preparations in vitro.
Sarah Shefer +2 more
doaj +1 more source
Synthesis of conjugated cholesterol and cholestanols.
Chemical and Pharmaceutical Bulletin, 1979 The glucuronides, sulfates, glucosides and N-acetylglucosaminides of cholesterol and epimeric 5α-cholestan-3-ols have been synthesized. The formation of a β-glucoside linkage was readily achieved by means of the Koenigs-Knorr reaction with the corresponding α-acetohalosugar, employing cadmium carbonate as a catalyst.
GOTO, JUNICHI +2 more
openaire +1 more source
Archaeometry, Volume 68, Issue 4, Page 646-658, August 2026.ABSTRACT Geochemical data compiled from dried sediments from three water reservoirs at the ancient Maya city of Ucanal, Petén, Guatemala, reveal low to undetectable fecal biomarker concentrations. These low concentrations may be the result of the aerobic decay of sterols combined with well‐managed waste disposal practices.
Jean D. Tremblay +3 more
wiley +1 more source
Journal of Lipid Research, 2001 Cerebrotendinous xanthomatosis (CTX) is a rare, recessively inherited lipid storage disease characterized by a markedly reduced production of chenodeoxycholic acid and an increased formation of 25-hydroxylated bile alcohols and cholestanol. Patients with
Akira Honda +9 more
doaj +1 more source
European Journal of Organic Chemistry, Volume 29, Issue 25, 4 July 2026.Chemoselective hydride abstractor iminometalloids, derived from O‐mesylacetoxime (MAO) using Rh2(II/II) or Cu(I) catalysts, can activate the C–Hα bonds of alcohols and aldehydes ultimately forming ketones, carboxylic acids, and esters even in the presence of C–H bonds with comparable bond strengths.
Raghunath Reddy Anugu +2 more
wiley +1 more source
Serum plant sterols and biliary cholesterol secretion in humans
Journal of Lipid Research, 2002 Ratios of cholestanol, campesterol, and sitosterol to cholesterol in serum are known to reflect cholesterol absorption efficiency. Here, a possible link between these ratios and biliary secretion rates of cholesterol was investigated.
Bernhard Lindenthal +5 more
doaj +1 more source