Phenylethyl Glycosides from Digitalis lanata
✍ Scribed by Hasan Kırmızıbekmez; Engin Celep; Milena Masullo; Carla Bassarello; Erdem Yeşilada; Sonia Piacente
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- German
- Weight
- 178 KB
- Volume
- 92
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Three new phenylethyl glycosides, 3′′′′‐__O‐__methylmaxoside (=2‐(3,4‐dihydroxyphenyl)ethyl O‐β‐D‐glucopyranosyl‐(1→3)‐O‐[β‐D‐glucopyranosyl‐(1→6)]‐4‐O‐(E)‐feruloyl‐β‐D‐glucopyranoside; 1), digilanatosides A (=2‐(3,4‐dihydroxyphenyl)ethyl O‐6‐O‐(E)‐sinapoyl‐β‐D‐glucopyranosyl‐(1→3)‐4‐O‐(E)‐caffeoyl‐β‐D‐glucopyranoside; 2), and digilanatoside B (=2‐(3,4‐dihydroxyphenyl)ethyl O‐6‐O‐(E)‐p‐coumaroyl‐β‐D‐glucopyranosyl‐(1→3)‐4‐O‐(E)‐caffeoyl‐β‐D‐glucopyranoside; 3) were isolated from the aerial parts of Digitalis lanata, along with two known phenylethyl glycosides, purpureaside A and maxoside, a phenylpropanoid glucose ester, 1‐O‐(E)‐feruloyl‐β‐glucopyranose, a benzoquinolethanoid glucoside, cornoside, a cardenolide, lanatoside C, a furostane‐type steroidal saponin, purpureagitoside, and a disaccharide, sucrose. Their structures were elucidated on the basis of spectroscopic evidence (1D‐ and 2D‐NMR, and HR‐MALDI‐MS).
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