Samioside, a new phenylethanoid glycoside with free-radical scavenging andantimicrobial activities from Phlomis samia

Citation
I. Kyriakopoulou et al., Samioside, a new phenylethanoid glycoside with free-radical scavenging andantimicrobial activities from Phlomis samia, J NAT PROD, 64(8), 2001, pp. 1095-1097
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Agricultural Chemistry","Pharmacology & Toxicology
Journal title
JOURNAL OF NATURAL PRODUCTS
ISSN journal
0163-3864 → ACNP
Volume
64
Issue
8
Year of publication
2001
Pages
1095 - 1097
Database
ISI
SICI code
0163-3864(200108)64:8<1095:SANPGW>2.0.ZU;2-6
Abstract
A new phenylethanoid glycoside, samioside, was isolated from the aerial par ts of Phlomis samia and identified as 1-O-3,4-(dihydroxyphenyl)ethyl- beta -apiofuranosyl-(1 -->4)-alpha -L-rhamnopyranosyl-(1 -->3)-4-O-caffeoyl- -be ta -D-glucopyranoside (1). In addition, one known phenylethanoid glycoside and three known flavonoids were identified as acteoside (2), apigenin, chry soeriol, and ermanin, respectively. The structure of 1 was elucidated on th e basis of its spectroscopic data. Samioside (1) demonstrated scavenging pr operties toward the DPPH radical and antimicrobial activity against Gram-po sitive and -negative bacteria.