Samioside, a New Phenylethanoid Glycoside with Free-Radical Scavenging and Antimicrobial Activities from <i>Phlomis </i><i>s</i><i>amia</i>
Irene KyriakopoulouLaboratory of Pharmacognosy, University of Athens, Panepistimiopolis, Zografou, GR-15771 Athens, GreeceProkopios MagiatisLaboratory of Pharmacognosy, University of Athens, Panepistimiopolis, Zografou, GR-15771 Athens, GreeceAlexios‐Léandros SkaltsounisLaboratory of Pharmacognosy, University of Athens, Panepistimiopolis, Zografou, GR-15771 Athens, GreeceNektarios AligiannisLaboratory of Pharmacognosy, University of Athens, Panepistimiopolis, Zografou, GR-15771 Athens, GreeceCatherine HarvalaLaboratory of Pharmacognosy, University of Athens, Panepistimiopolis, Zografou, GR-15771 Athens, Greece
2001en
ABI
Аннотация
A new phenylethanoid glycoside, samioside, was isolated from the aerial parts of Phlomis samia and identified as 1-O-3,4-(dihydroxyphenyl)ethyl beta-D-apiofuranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->3)-4-O-caffeoyl-beta-D-glucopyranoside (1). In addition, one known phenylethanoid glycoside and three known flavonoids were identified as acteoside (2), apigenin, chrysoeriol, and ermanin, respectively. The structure of 1 was elucidated on the basis of its spectroscopic data. Samioside (1) demonstrated scavenging properties toward the DPPH radical and antimicrobial activity against Gram-positive and -negative bacteria.
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