title: A new cytotoxic stigmastane steroid from Pistia stratiotes.
abstract: A new cytotoxic stigmastane, 7beta-hydroxy-4,22-stigmastadien-3-one (3), together with two known cytotoxic stigmastanes (1, 2) and a norisoprenoid (4), have been isolated from the aquatic plant pistia stratiotes. The structure determination was accomplished by spectroscopic methods.
authors.affiliation: Department of Chemistry, Dammietta Faculty of Science, New Dammietta, Egypt.
authors.forename: S N
authors.initials: SN
authors.lastname: Ayyad
mesh_terms: D016475:3T3 Cells; D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry* / Q000302:isolation & purification; D029064:Araceae / Q000737:chemistry*; D004354:Drug Screening Assays, Antitumor; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D051379:Mice; D012997:Solvents; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013256:Steroids / Q000302:isolation & purification / Q000633:toxicity*; D014407:Tumor Cells, Cultured
chemical_list: C452863:7-hydroxy-4,22-stigmastadien-3-one; D000972:Antineoplastic Agents, Phytogenic; D012997:Solvents; D013256:Steroids