1-(1-Hydroxyethyl)-7, 8-dihydroindolo [2, 3-a] pyridine [3, 4-g] quinolizin-5 (13H)-one (angustoline) monohydrate from Nauclea subdita (Rubiaceae)

Liew, S. Y.; Mukhtar, M.R.; Awang, K.; Mustafa, M R; Ng, S.W. (2011) 1-(1-Hydroxyethyl)-7, 8-dihydroindolo [2, 3-a] pyridine [3, 4-g] quinolizin-5 (13H)-one (angustoline) monohydrate from Nauclea subdita (Rubiaceae). Acta Crystallographica Section E: Structure Reports Online, 67 (7). o1727-o1728. ISSN 1600-5368

[img]
Preview
PDF - Published Version [error in script]
Download (439Kb) | Preview

    Abstract

    The title compound (trivial name: angustoline monohydrate), C20H17N3O2 H2O, features a fused-ring system formed by one five- and four six-membered rings. The nearly planar benzimidazole portion (r.m.s. deviation = 0.008 A˚) and the nearly planar 2,7-naphthyridin-1-one portion (r.m.s. deviation = 0.022 A˚) of the fused-ring system are slightly twisted, with a dihedral angle of 9.47 (8), owing to the tetrahedral nature of the two methylene linkages in the central six-membered ring. The secondary N atom acts as a hydrogen-bond donor to the water molecule of crystallization. In the crystal, the amino and hydroxy groups, and the water molecule are engaged in hydrogen bonding, generating a three-dimensional network.

    Item Type: Article
    Journal or Publication Title: Acta Crystallographica Section E: Structure Reports Online
    Additional Information: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia Correspondence e-mail: seikweng@um.edu.my
    Uncontrolled Keywords: Single-crystal X-ray Study; T = 100 K; Mean �(C–C) = 0.003 A˚; R Factor = 0.036; wR factor = 0.098; Data-to-parameter Ratio = 13.0.
    Subjects: Q Science > QD Chemistry
    Divisions: Faculty of Science > Dept of Chemistry
    Depositing User: Ms Haslinda Lahuddin
    Date Deposited: 16 Jan 2012 10:45
    Last Modified: 16 Jan 2012 10:45
    URI: http://eprints.um.edu.my/id/eprint/2430

    Actions (For repository staff only: Login required)

    View Item

    Document Downloads

    More statistics for this item...