Die aus der Wurzel des chinesischen Rhabarbers (Rhizornn rhei) isolierte Verbindung C22H2201 I besitzt die Struktur einer 2-O-Cinnamoyl-l-O-galloyl-~-~-glucopyranose (1). Diese wird bewiesen durch Hydrolyse zu Gallussaure, Zimtsaure und Glucose, durch die Reaktion rnit Methanol/ Ammoniak zu I-0-Galloyl-P-o-glucose sowie durch 1H-NMR-Untersuchungen.
~-~-~i n n a m o y~-~-~-g a~~o y~-~-D -g~u c o p y r a n o s~ from Rhizoma rheiThe compound C22H22011 isolated from the root of Chinese rhubarb (Rhizoma rhei) has the structure of 2-O-cinnamoyl-l-O-gaIloyl-~-~-glucopyranose (1). It is proved by hydrolysis to gallic acid, cinnamic acid and glucose, by the reaction of methanol/ammonia yielding 1-0-galloyl-~-D-glucose and by IH-NMR investigations.
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