Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Ground-State Conformational Equilibrium of Previtamin d aNd Its E-Isomer: Effect On the Absorption Characteristics

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

This Article is currently unavailable for purchase.
Add to Favorites
You must be logged in to use this functionality

Cover image Placeholder

The ground-state conformational analysis of previtamin D, its E-isomer, tachysterol, their 10-desmethyl analogues and 1-methyl-1-hydroxy-previtamins have been performed by force-field calculations. Differences in the absorption characteristics of these compounds are discussed in view of the chromophore geometry and abundance (%) of the calculated conformers according to a Boltzmann distribution at 298 K. On the basis of present calculations, the red shift of previtamin D low-temperature UV and CD spectra determined earlier is attributed to the shift of conformational equilibrium in favour of more stable cZc geometries. The effect of complex formation with simplest model cluster of silica surface ((H3SiO)3SiOH), on previtamin D and tachysterol conformational equilibria and on UV-absorbance maxima has been evaluated.

Affiliations: 1: Institute of Surface Chemistry, National Ukrainian Academy of Sciences, 252022 Kiev, Ukraine; 2: Institute of Organic Chemistry, University of Vienna, A-1090 Vienna, Austria


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation