Synthesis and Akt inhibitory properties of a 1d-3,4-dideoxyphosphatidylinositol ether lipid
摘要:
1D-3,4-Dideoxyphosphatidylinositol ether lipid 2, a PI analog, was synthesized through a sequence of protection/deprotection protocols and two Barton deoxygenation reactions, starting from L-(-)-quebrachitol. DDPIEL is 18-fold more potent than its monodeoxy counterpart DPIEL in the inhibition of P13-K. (C) 2000 Published by Elsevier Science Ltd.
Chemoenzymatic synthesis of enantiopure α-substituted cyclohexanones from aromatic compounds
摘要:
A series of chiral alpha-substituted cyclohexanones have been synthesized from chemoenzymatically produced chlorocyclo-hexadienediol. These highly functionalized ketones can be used in the total synthesis of diverse natural products, such as bengamides. A study of the reactivity of alpha-chlorooxiranes, common intermediates in the synthetic scheme, showed that under nucleophilic opening conditions an intermediate chloroketone may or may not form, depending on the nature of the nucleophiles present in the reaction medium. The stereochemical outcome of this reaction is presented. (c) 2005 Elsevier Ltd. All rights reserved.