Synthesis of a novel C2-aryl pyrrolo[2,1-c][1,4]benzodiazepine-5,11-dione library: effect of C2-aryl substitution on cytotoxicity and non-covalent DNA...
Basic Information
ID: ALA1147843
Journal: Bioorg Med Chem
Title: Synthesis of a novel C2-aryl pyrrolo[2,1-c][1,4]benzodiazepine-5,11-dione library: effect of C2-aryl substitution on cytotoxicity and non-covalent DNA binding.
Authors: Antonow D, Jenkins TC, Howard PW, Thurston DE.
Abstract: A 23-member C2-aryl pyrrolo[2,1-c][1,4]benzodiazepine-5,11-dione (PBD dilactam) library has been synthesized using Suzuki coupling, and the effect of base upon racemisation at the C11a-position during the cross-coupling reaction studied. Three library members (21, 30 and 33) were sufficiently cytotoxic in the NCI's preliminary screen to warrant further evaluation, and one (30, R=p-Br) was found to be cytotoxic at the sub-micromolar level in the A498 renal cancer cell line. DNA thermal denaturation studies suggested that this activity may be associated with non-covalent DNA interaction, and also demonstrated that introduction of C2-C3 unsaturation and addition of C2-aryl functionalities to the PBD dilactam skeleton significantly enhanced helix stabilisation compared to the unsubstituted PBD dilactam (6).
CiteXplore: 17317191
DOI: 10.1016/j.bmc.2007.01.054
Patent ID: ┄