title: Dihalogenated trichodermin (4β-acet-oxy-9,10-dibromo-12,13-epoxy-tri-chothec).
abstract: In the title dihalogenated trichodermin mol-ecule, C(17)H(24)Br(2)O(4) (systematic name: 9,10-dibromo-12,13-epoxy-trichothec-9-en-4β-yl acetate), the five-membered ring displays an envelope conformation, whereas the two six-membered rings show the same conformation, viz. chair. As for the seven-membered ring, the dihedral angle between the mean planes formed by the four C atoms of the envelope unit and the three C and one O atoms of the six-membered chair is 69.08 (4)°; these two mean planes are nearly perpendicular to the ep-oxy ring with angles of 87.53 (4) and 88.67 (4)°, respectively.
authors.forename: Jin-Hao
authors.initials: JH
authors.lastname: Zhao
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhou
authors.forename: Jian-Gong
authors.initials: JG
authors.lastname: Zhang
authors.forename: Jing-Li
authors.initials: JL
authors.lastname: Cheng
authors.forename: Fu-Cheng
authors.initials: FC
authors.lastname: Lin