Phenylethanoid

Phenylethanoids are a type of phenolic compounds characterized by a phenethyl alcohol structure. Tyrosol and hydroxytyrosol are examples of such compounds.

Glycosides

The red deadnettle (Lamium purpureum) contains phenylethanoid glycosides named lamiusides A, B, C, D and E.^[1] The aerial parts of Stachys officinalis contain phenylethanoid glycosides, (betonyosides A, B, C, D, E and F). Chemical investigation of methanol extracts from Pithecoctenium crucigerum (Bignoniaceae) showed the presence of five phenylethanoid glycosides (verbascoside, isoverbascoside, forsythoside B, jionoside D and leucosceptoside B), these all active against DPPH.^[2]

Verbascoside and echinacoside are phenylethanoid and phenylpropanoid hybrids forming ester bonds with sugars.

References

^ Ito, N; Nihei, T; Kakuda, R; Yaoita, Y; Kikuchi, M (2006). "Five new phenylethanoid glycosides from the whole plants of Lamium purpureum L". Chemical & Pharmaceutical Bulletin. 54 (12): 1705–8. doi:10.1248/cpb.54.1705. PMID 17139106.
^ Martin, Frédéric; Hay, Anne-Emmanuelle; Corno, Laura; Gupta, Mahabir P.; Hostettmann, Kurt (May 2007). "Iridoid glycosides from the stems of Pithecoctenium crucigerum (Bignoniaceae)". Phytochemistry. 68 (9): 1307–11. doi:10.1016/j.phytochem.2007.02.002. PMID 17382978.

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[1] Ito, N; Nihei, T; Kakuda, R; Yaoita, Y; Kikuchi, M (2006). "Five new phenylethanoid glycosides from the whole plants of Lamium purpureum L". Chemical & Pharmaceutical Bulletin. 54 (12): 1705–8. doi:10.1248/cpb.54.1705. PMID 17139106.

[2] Martin, Frédéric; Hay, Anne-Emmanuelle; Corno, Laura; Gupta, Mahabir P.; Hostettmann, Kurt (May 2007). "Iridoid glycosides from the stems of Pithecoctenium crucigerum (Bignoniaceae)". Phytochemistry. 68 (9): 1307–11. doi:10.1016/j.phytochem.2007.02.002. PMID 17382978.

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