title: New natural products under development at the National Cancer Institute.
abstract: Twenty-six new agents of natural products origin which are under preclinical development as potential antitumor agents at the National Cancer Institute are discussed with reference to their sources, structures, antitumor activity, current status, and future potential as clinically effective drugs.
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000627:therapeutic use*; D004353:Drug Evaluation, Preclinical; D006801:Humans; D009316:National Institutes of Health (U.S.); D009374:Neoplasms, Experimental / Q000188:drug therapy; D014481:United States
chemical_list: D000903:Antibiotics, Antineoplastic