Abstract
Thermal isomerisation of vitamin D3 at 140 °C under nitrogen in the dark gave isovitamin D3 and isotachysterol as the principal products, identified by 1H and 13C NMR spectroscopy.
References
1.
(a)
Feldman D.
,
Glorieux F. H.
, and
Pike J. W.
, (eds.), Vitamine D , Academic Press , San Diego , 1997 ; (b) R. Kumar, Ed., Vitamin D: Basic Clinical Aspects , Martinus Nijhoff Publishings, Boston, 1984.
2.
Norman A. W.
, Vitamin D: The Calcium Homeostatic Steroid Homomone , Academic Press , London , 1979 .
3.
Yeung B.
, and
Vouros P.
, Mass Spectr. Rev. , 1995 , 14 , 179 .
4.
(a)
Havinga E.
, Experientia , 1973 , 15 , 1181 .
5.
Pelc B.
, and
Marshall D. H.
, Steroids , 1978 , 31 , 23 .
6.
Mizhiriskii M.D.
,
Konstantinovskii L. E.
, and
Vishkautsan R.
, Tetrahedron , 1996 , 52 , 1239 .
7.
Boomsma F.
,
Jacobs H. J. C.
,
Havingga E.
, and
van der Gen A.
, J. R. Netherlands Chem. Soc. , 1977 , 96 , 104 .
8.
Dauben W.G.
, and
Funhoff D. J. H.
, J. Org. Chem. , 1988 , 53 , 5376 .
9.
Agarwal V.K.
, J. Steroid Biochem. , 1990 , 35 , 149 .
10.
Dmitrenko O.G.
,
Telbiz G. M.
,
Kikteva T. A.
,
Eremenko A. M.
, and
Chuiko A. A.
, Proc. Ind. Acad. Sci. (Chem. Sci.) , 1997 , 109 , 333 .