(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.
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)].
Research Department of Physics, SDNB Vaishnav College for Women, Chennai 600 004, India.
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Santhiya
Department of Organic Chemistry, University of Madras, Guindy, Chennai 600 025, India.
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Naga Siva Rao
Department of Organic Chemistry, University of Madras, Guindy, Chennai 600 025, India.
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Raghunathan
Research Department of Physics, SDNB Vaishnav College for Women, Chennai 600 004, India.
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Latha
Research Department of Physics, SDNB Vaishnav College for Women, Chennai 600 004, India.
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Lakshmi