The Constituents of Iris florentina L. (3). Structure of Irisxanthone, a New C-Glycosylxanthone
1973 年 21 巻 11 号 p. 2562-2565
詳細
1973 年 21 巻 11 号 p. 2562-2565
Irisxanthone (IV), C20H20O11·H2O, decomposing over 208° without melting, a new C-glycosylxanthone, has been isolated from the rhizoma of Iris florentina L. (Iridaceae) along with mangiferin. The structure of irisxanthone (IV) has been determined as 2-C-β-D-glucopyranosyl-5-methoxy-1, 3, 6-trihydroxyxanthone by chemical and spectral studies.
