title: Syn- and anticlinal isomers of 2a'-acetoxy-1,7'-diacetyl-7',7a'-dihydro-2-oxospiro[1H-indole-3(2H),2'(2a'H)-oxeto[3,2-b]indole].
abstract: In the syn- and anticlinal isomers of the title compound, C(22)H(18)N(2)O(6), the indole moiety is not completely planar, with the pyrrolidine ring being distorted very slightly towards a conformation intermediate between half-chair and envelope. The molecular and packing structures in the crystals of these isomers are stabilized by C-H...O interactions.
authors.affiliation: X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
authors.forename: Anwar
authors.initials: A
authors.lastname: Usman
authors.forename: Ibrahim Abdul
authors.initials: IA
authors.lastname: Razak
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Suchada
authors.initials: S
authors.lastname: Chantrapromma
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: Xu