New method for the synthesis of sym- octahydroxanthenes and sym- octahydrothioxanthenes

Gas chromatography–mass spectrometry of the stereoisomers of heterocyclic compounds. Part 2a.1 Perhydroxanthenes

“…3,4 There is evidence for the preferred formation of the trans-syn-trans-PHX from the ion hydrogenation of sym-octahydroxanthene. 6, 7 The existence of the other three stereoisomers is not confirmed in the literature. Moreover, to the best of our knowledge, we are unaware of GC-MS studies ever having been performed on PHX.…”