الفهرس 
review of literatureOnly 14 pages are availabe for public view
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Abstract
The development of prodrugs that are enzymatically activated into anticancer agents is a promising perspective in cancer therapy. Many nitrogen-containing quinoid heterocycles have been reported to show antitumor effect. The principal interest in these compounds lies on their potential to produce tumor-selective toxicity. selectivity occurs by difference in oxygen tension between normal and tumor tissue and by levels of the required activating enzymes. In this review a summary of the most interesting heterocyclic quinones is given together with their biological property. SAR studies concerning the importance of some structural features will be described.