(1S,1′S,2′R,4a’S,9a’S,9b’R)-1′-Acetyloxy-2,4′-dioxo-2′,4′,4a’,7′,8′,9′,9a’,9b’-octahydro-1′H,2H-spiro[acenaphthylene-1,5′-pyrano[4,3-a]pyrrolizin]-2′-ylmethyl acetate
نویسندگان
چکیده
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)].
منابع مشابه
Chem. Pharm. Bull. 54(1) 126—128 (2006)
found in Southeast China and Southeast Asia. The fruits are edible and abundant in ( )-hydroxycitric acid, and the latex and the bark have some prenylated xanthones which show mainly a 1, 3, 6, 7 oxygenation pattern. The constituents of the young stems of the species from Southeast China were investigated for bioactive xanthones. This paper reports the isolation and characterization of two new ...
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