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A new carotenoid glycoside from Rehmannia glutinosa
Guang-Miao Fu1, She-Po Shi, Fanny C F Ip
1Department of Biochemistry, State Key Laboratory of Molecular Neuroscience, Molecular Neuroscience Center, Biotechnology Research Institute, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
Natural Product Research
|June 29, 2011
Abstract:
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 structure of the new compound (1) was determined based on MS, IR, 1-D and 2-D NMR spectral data.