M. Bamba et al., STEREOELECTRONIC AND STERIC EFFECTS FOR CRITICAL OXIDATION TO THE CYCLOHEXANE DERIVATIVES FOR AN INTERMEDIATE TO (-)-TETRODOTOXIN, Synlett, (4), 1998, pp. 371
A critical step for hydroxylation to cyclohexane ring at the 10 alpha
orientation of an intermediate to tetrodotoxin was achieved through a
limited precursor by allylic oxidation with SeO2. In all the cases ste
reocontrol was rendered by strictly stereoelectronic and steric effect
s to give exact products.