Anti-Platelet Aggregating and Anti-Oxidative Activities of 11-O-(4′-O-Methylgalloyl)-bergenin, a New Compound Isolated fromCrassulacv. ‘Himaturi’

A new compound, 11- O -(4′- O -methylgalloyl)-bergenin was isolated from the MeOH extract of Crassula cv. ‘Himaturi’. The structure of the compound was determined on the basis of chemical and spectroscopic data. It inhibited arachidonic acid-induced platelet aggregation more efficiently than acetylsalicylic acid and showed an anti-oxidative effect (EC 50 = 23.9 μM) equivalent to that of L -ascorbic acid or quercetin. Supporting Information for this article is available online at Supporting Information .