title: (11R,11aS)-11-Hydr-oxy-1,5,11,11a-tetra-hydro-1-benzothieno[2,3-f]indolizin-3(2H)-one.
abstract: The absolute configuration of the title compound, C(14)H(13)NO(2)S, was assigned from the synthesis and confirmed by the structure determination. The central six-membered ring of the indolizine system adopts an envelope conformation, the greatest deviation from the mean plane of the ring being 0.459 (2) Å for the N atom. The benzothieno system is planar [mean deviation = 0.009 (2) Å]. In the crystal structure, mol-ecules form chains parallel to the b axis via inter-molecular O-H⋯O hydrogen bonds.
authors.forename: Lubomír
authors.initials: L
authors.lastname: Svorc
authors.forename: Viktor
authors.initials: V
authors.lastname: Vrábel
authors.forename: Jozef
authors.initials: J
authors.lastname: Kožíšek
authors.forename: Stefan
authors.initials: S
authors.lastname: Marchalín
authors.forename: Peter
authors.initials: P
authors.lastname: Safář