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Phytochemical studies of Rehmannia glutinosa rhizomes
N T H Anh1, T V Sung, K Franke
1Institute of Chemistry, National Center for Sciences and Technology, Hanoi, Vietnam.
Die Pharmazie
|September 12, 2003
Abstract:
2,4-Dimethoxy-2-methyl-6H-pyran-3-one (1), a hitherto unknown natural product, and the calcium salt of rehmapicroside (2) have been isolated from rhizomes of the Vietnamese variety of Rehmannia glutinosa Libosch together with a series of known compounds: norcarotenoids (3-5), 2-formyl-5-hydroxy-methylfurane (6), the iridoid rehmaglutin D (7), iridoid glycosides (8-12) and phenylethyl alcohol glycosides (13-17). Their structures were determined by mass and NMR spectroscopy.