We recently described two novel arylbindingsites of farnesyltransferase. The arylacetyl residue was designed as an appropriate substituent for our benzo‐phenone‐based AAX‐peptidomimetic compound capable of occupying the near arylbindingsite which is located next to the catalytic zinc ion. Non‐thiol farnesyl‐transferase inhibitors with micromolar to submicromolar activity were obtained.