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  • Title: Karsoside and scropolioside D, two new iridoid glycosides from Scrophularia ilwensis.
    Author: Caliş I, Zor M, Başaran AA, Wright AD, Sticher O.
    Journal: J Nat Prod; 1993 Apr; 56(4):606-9. PubMed ID: 8496707.
    Abstract:
    Two new iridoid glycosides, karsoside [1] and scropolioside D [2], were isolated from the aerial parts of Scrophularia ilwensis. Their structures were elucidated on the basis of chemical and spectral data as 6'-O-(beta-D-xylopyranosyl)-methylcatalpol and 6-O-[(2",4"-di-O-acetyl-3"-O-trans-cinnamoyl)-alpha-L-rhamnopyranosyl]- catalpol, respectively. Additionally, four known iridoids (aucubin, harpagide, 8-O-acetylharpagide, and ajugol), a phenylpropanoid glycoside (angoroside C), and two flavonoids (quercetin-3-O-rutinoside and kaempferol-3-O-rutinoside) were isolated and identified.
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