Efficient regioselective protection of myo-inositol via facile protecting group migration
作者:Comfort M. Nkambule、Nomfundo W. Kwezi、Henok H. Kinfe、Mbulelo G. Nokwequ、David W. Gammon、Stefan Oscarson、Erik Karlsson
DOI:10.1016/j.tet.2010.11.063
日期:2011.1
A cis-1,2-cyclohexanediol, 1,4,5,6-tetra-O-benzyl-myo-inositol, was selectively protected at the axial C2-hydroxyl via acid-mediated rearrangement of the corresponding 1,2-orthoacetate, or via the base-induced migration of a protectinggroup that had previously been easily installed with complete regioselectivity at the adjacent equatorial hydroxyl. Esters 4a–6a were synthesized in high yields (75–82%)