Alvaradoins E-N, antitumor and cytotoxic anthracenone C-glycosides from the leaves of Alvaradoa haitiensis

Sharnelle S. Phifer, Dongho Lee, Eun Kyoung Seo, Nam Cheol Kim, Tyler N. Graf, David J. Kroll, Hernán A. Navarro, Robert A. Izydore, Francisco Jiménez, Ricardo Garcia, William C. Rose, Craig R. Fairchild, Robert Wild, Djaja D. Soejarto, Norman R. Farnsworth, A. Douglas Kinghorn, Nicholas H. Oberlies, Monroe E. Wall, Mansukh C. Wani