Building site: A cross‐acridine scaffold was designed to project functional groups with spatial and angular geometries that accurately mimic the i, i+3, i+5, and i+7 side chains on a two‐turn, two‐face section of an α‐helix. The binding mode of the most potent compound, 3 d, to Mcl‐1 was confirmed by 1H,15N HSQC NMR.