Phytochemical studies of Rehmannia glutinosa rhizomes
Anh, N.T.H.; Sung, T.V.; Franke, K.; Wessjohann, L.A.
Die Pharmazie 58(8): 593-595
2003
ISSN/ISBN: 0031-7144 PMID: 12967042 Document Number: 553855
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.