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  • Title: Irisones A and B: two new isoflavones from Iris missouriensis.
    Author: Wong SM, Konno C, Oshima Y, Pezzuto JM, Fong HH, Farnsworth NR.
    Journal: J Nat Prod; 1987; 50(2):178-80. PubMed ID: 3655793.
    Abstract:
    Two new isoflavones, irisones A and B, together with the known compound, 5,7-dihydroxy-2',6-dimethoxy isoflavone, were isolated from the roots of Iris missouriensis. With the help of 2D-homonuclear-J-correlation and 2D-nOe experiments the structure of irisone A was deduced to be 5-hydroxy-2'-methoxy-6,7-methylenedioxy isoflavone. The structure of irisone B was elucidated by spectral analyses as 2',5-dihydroxy-6,7-methylenedioxy isoflavone and was confirmed by chemical conversion to irisone A.
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