title: Antitumor Plants. V. Constituents of Cinchona pubescens.
abstract: The stem bark and stem wood of Cinchona pubescens were found to owe their weak cytotoxic activity to the presence of quinovic acid. This acid and its 3-rhamnoside were isolated and characterized through several derivatives, all of which were assayed for their cytotoxicity.
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification* / Q000627:therapeutic use; D002929:Cinchona / Q000032:analysis*; D009374:Neoplasms, Experimental / Q000188:drug therapy; D008517:Phytotherapy; D010946:Plants, Medicinal
chemical_list: D000972:Antineoplastic Agents, Phytogenic