Deoxyharringtonine is an alkaloid isolated from Cephalotaxus genus with significant anti-leukemic activity[1].
References
[1] Joseph D Eckelbarger, et al. Synthesis of antiproliferative Cephalotaxus esters and their evaluation against several human hematopoietic and solid tumor cell lines: uncovering differential susceptibilities to multidrug resistance. Chemistry. 2008;14(14):4293-306. DOI:10.1002/chem.200701998