The present invention relates to novel chemical compounds formula (I) (C)n—B-(A)m-B—(C)n (I) wherein m is 0 or 1, and n is independently 0, 1, 2 or 3, A, each B and each C are independently selected from phenylene and five- and six-membered heteroaromatic rings, and for a terminal ring B or C also from bicyclic heteroaromatic fused rings having seven to ten ring members, wherein the bond between at least two of the rings A to C may be replaced by a carbonyl group (—CO—), wherein at least two of the rings A to C are substituted with one or two groups R, and wherein each ring A to C further optionally is substituted with one or two groups R1. The compounds are useful in therapy, especially therapy of a mammal suffering from a disease involving misfolded or aggregated forms of proteins.