PDK1, a serine-threonine kinase thought to play a role in the PI3K/Akt signaling pathway, a
key mediator of cancer cell growth, survival and tumorigenesis. The synthesis, SAR and
ADME properties of this series of compounds are discussed culminating in the discovery of
compound 6 which possessed sub-micromolar cell proliferation activity and 65% oral
bioavailability in mice.