Crystal and molecular structure of (5S,8aS,9S)-9-hydroxy- 5-methyl- 4,6,7,8,8a,9-hexahydrothieno-[ 3,2-f] indolizin-5-ium iodide

Abstract

Abstract The title compound, C11H16NOS・I, is chiral molecule with three stereogenic centres. The absolute configuration was assigned from the synthesis and confirmed by the structure determination. The central six-membered ring of the indolizine moiety adopts a half-chair conformation with atom displaced by 0.655 (2) A from the plane of the oder remaining five atoms. The pyrrolidine ring adopts an envelope conformation, with the greatest deviation from the mean plane of the ring being 0.646 (2) A for the bridgehead N atom. The crystal structure of the title compound is stabilized by O-H・・・I and C-H・・・O hydrogen bonds.