Dalsympathetin--a new isoflavone gentiobioside from Dalbergia sympathetica (Dennst.).

N S Nagarajan, M G Sethuraman, C N Manoj, R Priya Rao

Index: Nat. Prod. Res. 20(2) , 195-200, (2006)

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Abstract

Two isoflavonoids isolated from Dalbergia sympathetica were identified as 5,4'-dihydroxy-7-methoxyisoflavone (1) (Prunetin) and Prunetin-4'-O-beta-D-gentiobioside (2) (Dalsympathetin). The natural occurrence of Dalsympathetin is reported for the first time. The position of glycosylation in Dalsympathetin at 4'-position has been confirmed by 2D-NMR spectral studies.