OBJECTIVE
To study the chemical constituents from the roots of Rehmannia glutinosa.
METHODS
The compounds were isolated by various chromatographic methods and identified by spectroscopic analysis.
RESULTS
Twelve compounds were isolated and their structures were identified as
A new carotenoid glycoside, namely neo-rehmannioside (1), together with five known compounds, 6-O-seco-hydroxyaeginetoyl ajugol (2), oxyrehmaionoside B (3), ajugol (4), geniposidic acid (5) and geniposide (6) was isolated from the 95% ethanol extract of dry roots of Rehmannia glutinosa. The
In the process of planting and harvesting of Rehmannia glutinosa, only the underground part is used, and a large number of stems and leaves that are considered non-medicinal parts are usually discarded. Recent studies have shown that the chemical components in the leaves are similar to those
A new minor polyoxygenated triterpene named glutinolic acid (1) and two new aeginetic acid quinovosides (2, 3) were isolated from the roots of Rehmannia glutinosa LIBOSCH. (Scrophulariaceae) cultivated in Gunwi-gun, Korea. The structures of these compounds were established as
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