1 alpha,20R-dihydroxyecdysone from Axyris amaranthoides.
Bioassay/RIA-directed phytochemical examination of the seeds of Axyris amaranthoides afforded a new ecdysteroid: 1 alpha,20R-dihydroxyecdysone [1-epi-integristerone A], together with 20-hydroxyecdysone and polypodine B. The structure of 1 alpha,20R-dihydroxyecdysone was determined unequivocally by UV, LSIMS, and a combination of 1D and 2D NMR techniques.
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Department of Biological Sciences, University of Exeter, Hatherly Laboratories, Devon, U.K.
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Rees
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Dinan
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D004440:Ecdysone / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010944:Plants / Q000737:chemistry*; D011863:Radioimmunoassay; D018629:Spectrometry, Mass, Secondary Ion / Q000379:methods; D013056:Spectrophotometry, Ultraviolet
C116943:1,20-hydroxyecdysone; D004440:Ecdysone