Broad spectrum protein kinase C (PKC) inhibitor (IC50 values are 7, 7, 6, 10, 60 and 20000 nM for PKCα, PKCβ, PKCγ, PKCδ, PKCζ and PKCμ respectively). Displays cardioprotective properties; reduces polymorphonuclear leukocyte adherence and infiltration following myocardial ischemia/reperfusion injury.