Novel Cyano- and <i>N</i>-Isopropylamidino-Substituted Derivatives of Benzo[<i>b</i>]thiophene-2-carboxanilides and Benzo[<i>b</i>]thieno[2,3-<i>c</i>]quinolones: Synthesis, Photochemical Synthesis, Crystal Structure Determination, and Antitumor Evaluation. 2
Derivatives of 3-chlorobenzo[b]thiophene-2-carboxanilides and their "cyclic" analogues benzo[b]thieno[2,3-c]quinolones were synthesized. Spectroscopic study of the interactions of some representatives of "cyclic" derivatives and their "acyclic" precursors with ds-DNA/RNA supported strong intercalative binding of the former and weak nonintercalative binding of the latter group of compounds. All tested