Acylflavonoid C-glycosides from Eleusine coracana

Chromatographic fractionation of the methanolic extract of the shoots of Eleusine coracana led to the identification of three novel acylflavonoid glycosides, 6 ''-O-3-hydroxy-3-methylglutaroylorientin (1), 6 ''-O-malonylvitexin (2), and 4 ''-O-3-hydroxy-3-methylglutaroylvitexin (3) as well as five known flavonoid glycosides, orientin (4), isoorientin (5), vitexin (6), isovitexin (7), and 6 ''-O-3-hydroxy-3-methylglutaroylvitexin (8). The structures of these compounds were established on the basis of NMR and mass spectral data. (c) 2008 Phytochemical Society of Europe. Published by Elsevier B.V. All rights reserved.