Abstract
Three triterpenes, 15-O-acetylacerinol, simplexyl acetate and O-methylcimiacerol have been obtained from Cimicifuga plants and recrystallized from ethyl acetate. 16-O-Acetylacerinol is tetragonal, space group P43212 or P41212, a = b = 7.7624 (7), c = 98.601 (8) Å, V = 5941.2 Å3; simplexyl acetate is monoclinic, space group P21 or P21/m, a = 15.513 (2), b = 8.3691 (7), c= 11.444 (1) Å, β = 90.33 (4)°, V = 1485.7 Å3; O-methylcimiacerol is orthorhombic, space group P212121, a = 15.940 (4), b = 18.278 (6), c = 9.650 (3), V = 2811.5 Å3. Full structure determinations are in progress.
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