Abstract:
:Pyrrolo[1,2-a]benzimidazole(PBI)-based aziridinyl quinones cleave DNA under reducing conditions specifically at G + A bases without any significant cleavage at C + T bases. The postulated mechanisms involve phosphate alkylation by the reductively activated aziridine to afford a hydrolytically labile phosphotriester as well as the classic N(7) purine alkylation followed by depurination and backbone cleavage. Evidence is presented that the phosphate alkylation mechanism could contribute. The PBIs possess a unique spectrum of cytotoxicity against cancer cells (inactive against leukemia but active against nonsmall cell lung, colon, CNS, melanoma, ovarian, and renal cancers). Also reported are results of in vivo antitumor activity screens.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Skibo EB,Schulz WGdoi
10.1021/jm00073a002subject
Has Abstractpub_date
1993-10-15 00:00:00pages
3050-5issue
21eissn
0022-2623issn
1520-4804journal_volume
36pub_type
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