Isotachysterol, the acid-catalyzed isomerization product of vitamin D 3, produces seven previously unknown oxygenation products in a self-initiated autoxidation reaction under atmospheric oxygen in the dark at ambient temperature. They are (5R)
Jin, Xiaoling,Yang, Xinping,Yang, Li,Liu, Zhong-Li,Zhang, Fa
9,10-Secocholesta-(5Z)-5,8(14),10(19)-triene-3β-ol and 18-Nor-14β-methyl-9,10-secocholesta-(5E)-5,10(19),13(17)-trien-3β-ol, two new double bond isomers of vitamin D3. Structural modifications of vitamin D3: 5. Communication
Thermal isomerisation of vitamin D3 in dimethyl sulfoxidet
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.
Jin, Xiaoling,Yang, Xinping,Yang, Li,Liu, Zhong-Li,Zhang, Fa
p. 691 - 693
(2007/10/03)
Autoxidation of isotachysterol: Formation of new epoxides
Autoxidation of isotachysterol under atmospheric oxygen in the dark at ambient temperature produces two new epoxides: (3S,5R)- and (3S,5S)-5,10-epoxy-isotachy sterols.