title: Phytoecdysteroid constituents from Cyanotis arachnoidea.
abstract: Four phytoecdysteroids that have only 19 or 21 carbons, named 11alpha-hydroxyrubrosterone (1), dihydroxyrubrosterone (2), rubrosterone (3) and poststerone (4), were isolated from the whole plant of Cyanotis arachnoidea C.B. Clarke. Among them, 1 was a new compound. Their structures were elucidated by spectroscopic methods.
authors: Natural Products and Glycoconjugate Research Group, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China. tanchyu@sina.com
authors: Cheng-Yu
authors: CY
authors: Tan
authors: Jin-Hui
authors: JH
authors: Wang
authors: Xian
authors: X
authors: Li
mesh_terms: D034821:Commelinaceae; D026461:Ecdysteroids / Q000737:chemistry*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry*
chemical_list: D026461:Ecdysteroids; D010936:Plant Extracts