Abstract
The synthesis and biological evaluation of some novel thiazolofluorenones, thiazolofluorenes and thiazoloanthraquinones, substituted with amino side-chains are described. These polyheterocyclic compounds have been synthesized via the corresponding imino-1,2,3-dithiazoles. Their cytotoxic activity and their eventual selective effect on a phase of the cell cycle were evaluated in vitro, using the murine lymphocytic L1210 leukaemia cell line.