THREE FLAVONE GLYCOSIDES FROM CITRUS SUDACHI

Article abstract of DOI:10.1016/S0031-9422(00)84522-7

Key Word Index - Citrus sudachi; Rutaceae; green peel; flavones; sudachitin glycosides; sudachiin B; sudachiin C; sudachiin D; 3-hydroxy-3-methylglutaric acid.Three flavone glycosides, sudachiins B, C and D, were isolated from the green peel of Citrus sudachi.On the basis of UV, 1H NMR and 13C NMR spectral data sudachiins B and C were identified as sudachiin A 6"-(3-hydroxy-3-methyl)glutarate and 7-O-β-D-glucosyl sudachitin 6"-(3-hydroxy-3-methyl)glutarate, respectively.Sudachiin D was found to be a unique glycoside in which sudachiin A and 7-O-β-D-glucosylsudachitin were esterified at their 6"-positions with 3-hydroxy-3-methylglutaric acid.