Table 4. Structures and ERK5 Inhibitory Activity Data for Compounds 34a–k.
ERK5 IC50’s determined using an IMAP FP progressive binding system kit (Molecular Devices #R8127).
IC50 determined by phospho-ERK5 Western blot densitometry in HeLa cells (1 h incubation with compounds).
μL/min/mg protein.
Papp 10–6 cm·s–1.