title: Antitumor agents XXIII: Helenalin, and antitumor principle from Anaphalis morrisonicola HAY.
abstract: A chloroform extract of the whole plant of Anaphalis morrisonicola HAY, showed significant antitumor activity against Ehrlich ascites carcinoma, Walker 256 carcinosarcoma, and P-388 lymphocytic leukemia. Systematic fractionation of the extract led to isolation and characterization of helenalin, a pseudoguaianolide, as the major active principle.
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification* / Q000627:therapeutic use; D002279:Carcinoma 256, Walker / Q000188:drug therapy; D002286:Carcinoma, Ehrlich Tumor / Q000188:drug therapy; D055598:Chemical Phenomena; D002621:Chemistry; D007942:Leukemia, Experimental / Q000188:drug therapy; D008517:Phytotherapy; D010946:Plants, Medicinal / Q000032:analysis*; D012717:Sesquiterpenes / Q000302:isolation & purification*; D045789:Sesquiterpenes, Guaiane
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D012717:Sesquiterpenes; D045789:Sesquiterpenes, Guaiane; C001329:helenalin