On the Synthesis of Potential Pharmaceuticals. Part 23. Synthesis and Cytostatic Activity of 10-and 11-Nitronoracronycine. Molecular Variations of Cytostatically Active Acronycine.-The nitronoracronycins (VI), synthesized as shown in the reaction scheme, possess cytotoxic activity against transplantation tumor leukemia P 388. The compounds (IIIb) and (IVa) are also active, whereas the nitroacridinones (IIIa) and (IVb) are inactive. -(REISCH, J.; DZIEMBA, P.; Arch. Pharm. (Weinheim, Ger.) 324 (1991) 2, 67-71; Inst. Pharm. Chem., Westf. Wilhelms-Univ., W-4400 Muenster, Fed. Rep. Ger.; DE)