𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Studies on vitamin D and related compounds XX. The conformation of tachysterol; N.O.E. and 220 Mhz N.M.R.

✍ Scribed by J. Lugtenburg; E. Havinga


Publisher
Elsevier Science
Year
1969
Tongue
French
Weight
163 KB
Volume
10
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


Although many stereochemical features of vitamin D and its ieomeric precursor6 may be coneidered rather well established (1,2) by now, there remain a few intriguing questions. One of the problems that asked for further study, is concerned with the conformational analysis of tachyeterol (Fig. I). The first suggestion made upon the


πŸ“œ SIMILAR VOLUMES


Studies on vitamin D and related compoun
✍ A. Verloop; A. L. Koevoet; R. van Moorselaar; E. Havinga πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 393 KB

## Abstract Details on the iodine‐catalyzed reactions of previtamin D, tachysterol, __cis‐__ and __trans__‐vitamin D (influence of solvent, concentration, wavelength of light) are given. The possibility of a previtamin D determination based on the __cis/trans__ isomerisation is indicated. Some resu

Studies on vitamin D and related compoun
✍ J. L. M. A. Schlatmann; E. Havinga πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 693 KB

## Abstract The syntheses are described of previtamin D ‐ and vitamin D analogues to be used for the study of the thermal precalciferol ⇋ calciferol isomerization reaction. A previtamin D analogue (4) prepared as indicated by Inhoffen could not be obtained in a pure state. Closer inspection reveal

Investigations on sterols XIV studies on
✍ M. P. Rappoldt πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 328 KB

## Abstract Kinetic experiments on the isomerization of lumisterol~2~ under the influence of ultraviolet light of various wavelengths are reported. The experiments indicate that neither tachysterol~2~ nor ergosterol are primary reaction products of lumisterol~2~. Lumisterol~2~ is exclusively conver