97743-92-5Relevant articles and documents
Gemins D, E and F, ellagitannins from Geum japonicum
Yoshida, Takashi,Maruyama, Yasuhiko,Memon, M.Usman,Shingu, Tetsuro,Okuda, Takuo
, p. 1041 - 1046 (1985)
Three new ellagitannins, gemin D, E and F were isolated from the leaves of Geum japonicum. The structures of gemin D and F were established as 3-O-galloyl-4,6-O-[(S-hexahydroxydiphenoyl]-D-glucose and 6-O-caffeoyl-2,3-O-[(S-hexahydroxydiphenoyl]-D-glucose, respectively. Gemin E is a novel C-glucosidic ellagitanin having a dehydrohexahydroxydiphenoyl group in the molecule. Gemin D was also isolated from the flower buds of Camellia japonica.