title: Flavonoid constituents from Eupatorium altissimum L. (Compositae).
abstract: An aqueous ethanol extract of Eupatorium altissimum L. (Compositae) showed confirmed activity in the P-388 lymphocytic leukemia assay in mice, and the chloroform solubles showed both cytotoxic activity in the 9KB carcinoma of the nasopharynx cell culture assay and antitumor activity in the P-388 lymphocytic leukemia assay. Two flavones, eupatorin and 5-hydroxy-3',4',6,7-tetramethoxyflavone, were isolated and identified. Both were devoid of cytotoxic and antitumor activity.
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification*; D005419:Flavonoids / Q000302:isolation & purification* / Q000494:pharmacology; D007942:Leukemia, Experimental / Q000188:drug therapy; D051379:Mice; D010946:Plants, Medicinal / Q000032:analysis*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D005419:Flavonoids