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
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|
- Liew, S.Y.
- Mukhtar, M.R.
- Awang, K.
- Mustafa, M.R.
- Ng, S.W.
|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: firstname.lastname@example.org|
|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 Dec 2014 14:25|
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