1D-3,4-Dideoxyphosphatidylinositol ether lipid 2, a PI analog, was synthesi
zed through a sequence of protection/deprotection protocols and two Barton
deoxygenation reactions, starting from L-(-)-quebrachitol. DDPIEL is 18-fol
d more potent than its monodeoxy counterpart DPIEL in the inhibition of P13
-K. (C) 2000 Published by Elsevier Science Ltd.