Chemical and Pharmaceutical Bulletin p. 1803 - 1807 (1994)
Update date:2022-08-11
Topics:
Yoshida
Amakura
Liu
Okuda
Three new hydrolyzable tannins, euphormisins M1, M2 and M3, were isolated from Euphorbia humifusa Willd., and respectively characterized as 1,3,6-tri-O-galloyl-4-O-brevifolincarboxyl-β-D-glucose (19), an oxidative metabolite (23) of geraniin, and 1,3,6-tri-O-galloyl-α-D-glucose (18), by spectroscopic and chemical methods. A new ellagic acid glucoside (16) and fifteen known tannins, including geraniin (8) and four dimers [euphorbins A (13), B (14), excoecarianin (15) and eumaculin A (12)], were also isolated.
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