The crystal structures of 6'-(4-chloro-phen-yl)- and 6'-(4-meth-oxy-phen-yl)-6a'-nitro-6a',6b',7',9',10',12a'-hexa-hydro-2H,6'H,8'H-spiro-[ace-naphthyl-ene-1,12'-chromeno[3,4-a]indolizin]-2-one.

ABSTRACT: In the title compounds, C₃₂H₂₅ClN₂O₄ (I) and C₃₃H₂₈N₂O₅ (II), the six-membered pyran and piperidine rings adopt envelope and chair conformations, respectively. The five-membered pyrrolidine rings adopt twist conformations. Compound (II) crystallizes with two independent mol-ecules (A and B) in the asymmetric unit. In all three mol-ecules there is a C-H⋯O intra-molecular hydrogen bond present enclosing an S(7) ring motif. In (I), both oxygen atoms of the nitro group are disordered, while in (II) the meth-oxy-benzene group is disordered in mol-ecule B. The geometries were regularized by soft restraints. In the crystal of (I), mol-ecules are linked by C-H⋯O hydrogen bonds, formi

SUBMITTER: Syed Abuthahir S 

PROVIDER: S-EPMC6362674 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature