title: A new cytotoxic tirucallane from the twigs of Walsura trichostemon.
abstract: A new tirucallane, trichostemonol (1), together with five known compounds (2-6) were isolated from the twigs of Walsura trichostemon. The structures of the isolated compounds were determined by extensive analysis of their spectroscopic data. All isolated compounds were evaluated for their cytotoxicity against KB and HeLa cells.
authors.forename: Jirapast
authors.initials: J
authors.lastname: Sichaem
authors.forename: Pongpun
authors.initials: P
authors.lastname: Siripong
authors.forename: Santi
authors.initials: S
authors.lastname: Tip-Pyang
authors.forename: Jatuporn
authors.initials: J
authors.lastname: Phaopongthai
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification*; D006801:Humans; D007624:KB Cells; D029582:Meliaceae / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D014315:Triterpenes; C514393:tirucallane; C588201:trichostemonol