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. 2013 Oct 2;69(Pt 11):o1601.
doi: 10.1107/S1600536813026111.

(1S,1'S,2'R,4a'S,9a'S,9b'R)-1'-Acet-yloxy-2,4'-dioxo-2',4',4a',7',8',9',9a',9b'-octa-hydro-1'H,2H-spiro-[ace-naphthyl-ene-1,5'-pyrano[4,3-a]pyrrolizin]-2'-ylmethyl acetate

S Santhiya  1 , J Naga Siva Rao  2 , R Raghunathan  2 , N Latha  1 , S Lakshmi  1
Affiliations

(1S,1'S,2'R,4a'S,9a'S,9b'R)-1'-Acet-yloxy-2,4'-dioxo-2',4',4a',7',8',9',9a',9b'-octa-hydro-1'H,2H-spiro-[ace-naphthyl-ene-1,5'-pyrano[4,3-a]pyrrolizin]-2'-ylmethyl acetate

S Santhiya et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the title compound C26H25NO7, the mean plane through the lactone-substituted ring of the pyrrolizidine moiety forms dihedral angles of 78.46 (6) and 58.28 (8)° with the ace-naphthyl-ene moiety and the sugar based-lactone ring, respectively. The sum of the angles at the the N atom of the pyrrolizidine ring (335.0°) is in accordance with sp (3) hybridization. Some atoms of the acetate group are disordered and were refined using a split model [occupancy ratio 0.673 (10):0.327 (10)].

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Figures

Fig. 1.
Fig. 1.
The molecular structure of the title compound with the numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. H atoms are presented as small spheres of arbitrary radius and disordering is shown with full and open bonds.
See this image and copyright information in PMC

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