A new flavonoid glycoside from the aerial parts of (L.) DC. growing in Algeria.

The phytochemical study of the 70% ethanol extract of the aerial parts of afforded one new flavonoid glycoside, namely kaempferol-3--[-L-rhamnopyranosyl-(1→2)--D-xylopyranoside]-7---L-rhamnopyranoside (), named diploerucoside A and seven known compounds including one flavonoid (), one phenolic glycoside (), one monoterpene (), one triterpene (), one sitosterol () and two monoglycerolipids (, ). Their structures were established by extensive spectroscopic analysis including 1 D- and 2 D-NMR (H, C, H-H COSY, HSQC and HMBC), mass spectrometry (HR-ESI-MS) and by comparison with the data reported in the literature.