title: [Studies on the alkaloids of Cephalotaxus. IX. Semi-synthesis of cephalotaxine esters and their anti-leukemic activity].
abstract: Harringtonine, homoharringtonine, deoxyharringtonine and isoharringtonine isolated from Cephalotaxus plant are the esters of cephalotaxine with significant inhibitory activity against P-388 leukemia. In this investigation seventeen new esters of cephalotaxine type alkaloids have been synthesized. Preliminary pharmacological examination showed that compounds 1, 2, 2 + 3, 6 and 8 showed similar antileukemic activity as homoharringtonine. Compounds 4, 5, 15 and 16 showed moderate inhibitory activity. Some structure activity correlations of these esters were discussed.
authors.affiliation: Shanghai Institute of Materia Medica, Academia Sinica.
authors.forename: D Z
authors.initials: DZ
authors.lastname: Wang
authors.forename: G E
authors.initials: GE
authors.lastname: Ma
authors.forename: R S
authors.initials: RS
authors.lastname: Xu
mesh_terms: D000818:Animals; D006248:Harringtonines / Q000138:chemical synthesis* / Q000494:pharmacology; D007941:Leukemia P388 / Q000473:pathology*; D051379:Mice; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D006248:Harringtonines