Hydroxy alkoximes

Some aspects of m.s. research in steroids have been briefly reviewed,"" with particular emphasis on the use of trimethylsilyl ethers of sterols, their hydroxy derivatives, and alkoximes of pregnan-20-ones. The trimethylsilyl ethers of 6-hydroxy-steroids influence fragmentation patterns, giving characteristic ions particularly when a 3-hydroxy- (TMS) or 3-oxo-group is also present." Experiments with deuterium-labelled materials " have confirmed the major... 

Cyclohexenone from dihydropyran ring via hydroxy- and keto-alkoximes... 

---