Gd. Dedelgado et al., THE CRYSTAL-STRUCTURE OF EUDESMA-4(15),7(11)-DIEN-8-ALPHA,12-OLIDE - A SESQUITERPENE LACTONE FROM TRATTINICKIA RHOIFOLIA WILLD, Journal of chemical crystallography, 25(7), 1995, pp. 371-374
The title compound, formula C15H20O2, is orthorhombic, P2(1)2(1)2(1) w
ith a = 8.747(2), b = 12.025(3), c = 12.554(3)Angstrom, Z = 4, and D-m
= 1.32(2)g/ml. The structural analysis shows that the compound corres
ponds to eudesma-4(15),7(11)-dien-8 alpha, 12-olide, a sesquiterpene l
actone previously isolated from Aster umbellatus but whose crystal str
ucture was unknown.