Physocalycoside, a new phenylethanoid glycoside from Phlomis physocalyx Hub.-Mor.
A new phenylethanoid tetraglycoside, physocalycoside (2), was isolated from the aerial parts of Phlomis physocalyx. Its structure was identified as 3-hydroxy-4-methoxy-beta-phenylethoxy-O-[alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-rhamnopyranosyl-(1-->3)]-4-O-feruloyl-[beta-D-glucopyranosyl-(1-->6)]-beta-D-glucopyranoside, on the basis of spectroscopic evidence. In addition, one known iridoid glucoside, lamiide (1) and five known phenylethanoid glycosides, wiedemannioside C (3), verbascoside (= acteoside) (4), leucosceptoside A (5), martynoside (6), and forsythoside B (7) were also characterized. Compounds 2-7 demonstrated radical scavenging properties towards the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical.
Ersöz
Tayfun
T
Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University TR 06100, Ankara, Turkey. tersoz@hacettepe.edu.tr
Alipieva
Kalina Iv
KI
Yalçin
Funda Nuray
FN
Akbay
Pinar
P
Handjieva
Nedjalka
N
Dönmez
Ali A
AA
Popov
Simeon
S
Caliş
Ihsan
I
D002240:Carbohydrate Sequence; D002934:Cinnamates / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D019686:Lamiaceae / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D010626:Phenylethyl Alcohol / Q000737:chemistry / Q000302:isolation & purification; D035261:Plant Components, Aerial / Q000737:chemistry*; D014312:Trisaccharides / Q000737:chemistry* / Q000302:isolation & purification
D002934:Cinnamates; D006027:Glycosides; D009844:Oligosaccharides; D014312:Trisaccharides; C478003:physocalycoside; D010626:Phenylethyl Alcohol