Potential antitumor agents. 44. Synthesis and antitumor activity of new classes of diacridines: importance of linker chain rigidity for DNA binding kinetics and biological activity
作者:William A. Denny、Graham J. Atwell、Bruce C. Baguley、Laurence P. G. Wakelin
DOI:10.1021/jm00149a005
日期:1985.11
Four classes of diacridines, joined at the 9-position by linker chains of varying length, rigidity, and polarity, were evaluated for DNA-binding properties and antitumor activity. Diacridines linked by flexible chains of varying polarity show relatively fast chromophore exchange kinetics among DNA binding sites but slower dissociation rates, suggesting the potential for considerable "creeping" of the drug along the helix, and are inactive in vivo. The exchange kinetics can be slowed dramatically by inclusion of positive charges in the side chain, but the resulting polycationic drugs are inactive in vivo, possibly due to poor distribution. Diacridines linked by a rigid, polar but neutral dicarbamoylpyrazole chain retain slow exchange kinetics, have a greatly reduced potential "creep rate", and possess good in vitro potency and significant in vivo antileukemic activity.
Synthesis of Bis-acridine Derivatives Exhibiting Anticancer and Anti-inflammatory Activity
作者:Sham M. Sondhi、Sandeep Kumar、Reshma Rani、Ajanta Chakraborty、Partha Roy
DOI:10.1002/jhet.985
日期:2013.3
A series of bis‐acridine derivatives 3a–j and 5a–j have been synthesized by condensation of 9‐chloro‐2,4‐(un)substituted acridines (1a–e) and 9‐isothiocyanato‐2,4‐(un)substituted acridines (4a–e) with diamine 2a and 2b, respectively. These bis‐acridines were evaluated in vitro for activity against a panel of human cancer cell lines of lung (NCI H‐522), ovary (PA1), breast (T47D), colon (HCT‐15), and liver (HepG2). Several bis‐acridines were found to possess good anticancer activity against various cancer cell lines. Of these, compound 3h exhibited good anticancer activity against all cancer cell lines tested except liver (HepG2) cell line. In addition to this, these compounds were screened for anti‐inflammatory activity at a dose of 50 mg/kg p.o. Compound 3g exhibited 41% anti‐inflammatory activity, which is better than most commonly used standard drug ibuprofen, which showed 39% anti‐inflammatory (at 50 mg/kg p. o.) activity.
Synthesis of Monomeric and Dimeric Acridine Compounds as Potential Therapeutics in Alzheimer and Prion Diseases
spacered dimericacridinecompounds was prepared. Their ability to interrupt the protein association of prion‐ and Alzheimer‐specific proteins and Ab peptides was explored using a fast screening system based on FACS analysis. The bis‐acridines displayed a higher activity than the corresponding monomers. Among these derivatives, best results were obtained with the 2,4‐dimethoxy‐6‐nitro compound 7h for