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16 843 (0,131s)

Result

Determining the Absolute Configuration of Two Marine Compounds Using Vibrational Chiroptical Spectroscopy

Various chiroptical methods were estimated in order to assign absolute configuration of a natural product. Vibrational methods were found more reliable than ECD....

CF - Fyzikální chemie a teoretická chemie

  • 2012
  • Jx
  • Link
Result

Absolute Configuration and Conformational Analysis of Sesquiterpene Lactone Glycoside Studied by Vibrational Circular Dichroism Spectroscopy

The absolute configuration of the guaiane-type sesquiterpene lactone 8-epiisolippidiol-3-O-b-D-glucopyranoside, isolated from plants of the genus Crepis, and the predominant solution-state conformation in CD3OD were determined by co...

CB - Analytická chemie, separace

  • 2007
  • Jx
Result

The Assignment of the Absolute Configuration of β-Chiral Primary Alcohols with Axially Chiral Trifluoromethylbenzimidazolylbenzoic Acid

Axially chiral trifluoromethylbenzimidazolylbenzoic acid (TBBA) was used as a chiral derivatization agent for the assignment of the absolute configuration of β-chiral primary alcohols. The structures varied from simple aliphatic alc...

Organic chemistry

  • 2020
  • Jimp
  • Link
Result

Absolute configuration of the antimalarial erythro-mefloquine - vibrational circular dichroism and X-ray diffraction studies of mefloquine and its thiourea derivative

The long-standing discussion of the absolute configuration of erythro-mefloquine is revisited, showcasing the strength of a combination of experimental and calculated vibrational circular dichroism spectroscopy. The resulting assign...

JJ - Ostatní materiály

  • 2016
  • Jx
  • Link
Result

How to Assign the Absolute Configuration of 2-Substituted Cyclopentanols.

Annotation not available...

CC - Organická chemie

  • 1996
  • Jx
Result

Enzymatic oxidation of thioanisoles: Isolation and absolute configuration of metabolites

Oxidation of p-bromothioanisole with toluene dioxygenase provides the corresponding diene diol 2 in good yield. Electrochemical reduction of 2 gives access to diene diol 3, which is not accessible by direct bio-oxidation of thioanisole. Absolute<...

CC - Organická chemie

  • 2004
  • Jx
Result

(3R,4S)-4-(4-fluorophenyl)-3-hydroxymethyl-1-methylpiperidine: Conformation and structure monitoring by vibrational circular dichroism

Absorption and vibrational circular dichroism (VCD) spectra of the title compound, a common intermediate in synthesis of many pharmaceuticals, were measured and analyzed in order to determine its absolute configuration and prevailin...

CC - Organická chemie

  • 2002
  • Jx
Result

Vibrational circular dichroism spectroscopy as a novel tool for structural analysis

Vibrational circular dichroism spectroscopy is briefly characterized and its application to stereochemical analysis is described. As examples, determination of absolute configuration of a pharmaceutically interesting precursor of fe...

CB - Analytická chemie, separace

  • 2002
  • Jx
Result

Cobalt bis(1,2-dicarbollide) ion with a disulfur bridge between B(8) and B(8). X-ray structure, absolute configuration of one enantiomer, and implications

Cobalt bis(1,2-dicarbollide) ion with a disulfur bridge between B(8) and B(8). X-ray structure, absolute configuration of one enantiomer, and implications......

CA - Anorganická chemie

  • 2002
  • Jx
Result

Absolute Configuration of a Cyclic Dipeptide Reflected in Vibrational Optical Activity: Ab Initio and Experimental Investigation

The ability of Raman optical activity (ROA) and vibrational circular dichroism (VCD) experiments to determine the absolute configuration of chiral molecules and VCD spectra were well correlated for all the absolute conf...

CF - Fyzikální chemie a teoretická chemie

  • 2012
  • Jx
  • Link
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