Abstract

The synthesis of (+)-usnic acid derivatives is described. The derivatives contain one or two cyano groups, connected to the acetophenone fragment of dibenzofuran core by linkers of different length and character, or some other modifications. The influence of these compounds on the activity of recombinant human tyrosyl-DNA phosphodiesterase 1 and MCF-7 tumor cells’ viability has been estimated. The data indicate a distinct dependence of functional characteristics of the compounds on their structure.

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