Two routes to chiral dithianes, useful synthons for the preparation of functionalised spiroketals.
摘要:
Two routes are described leading to chiral dithiane precursors for the synthesis of new substituted spiroketals. The stabilities of the methoxymethyl, tert-butyldimethylsilyl and tert-butyldiphenylsilyl hydroxyl protecting groups were tested in these reaction sequences.