The voltage-gated potassium channel Kv1. 3 constitutes an attractive target for the selective suppression of effector memory T cells in autoimmune diseases. We have previously reported the natural product khellinone, 1a, as a versatile lead molecule and identified two new classes of Kv1. 3 blockers:(i) chalcone derivatives of khellinone, and (ii) khellinone dimers linked through the 6-position. Here we describe the multiple parallel synthesis of a ...