Abstract
The helicene, pyrido[3,2-f]quinolino[6,5-c]cinnoline 5-oxide, was prepared by treatment of 6-hydroxylaminoquinoline with xanthine oxidase or treatment of 6-nitroquinoline with glucose in 30% NaOH and the product characterized using NMR, high resolution mass spectrometry, and X-ray crystallography. The hydrogens on carbons 7 and 12 of the terminal aromatic rings are separated by 2.495 Å creating an angle of 25.0° between the planes of the two quinoline ring systems. In the crystal, water molecules serve to link the helicenes into a one dimensional chain structure forming a hydrogen bonded bridge between N2 of one molecule and N4 of another. The molecule (C18H10N4O·H2O) crystallized in the monoclinic P21/n space group. Unit cell parameters for pyrido[3,2-f]quinolino[6,5-c]cinnoline 5-oxide monohydrate: a = 7.0829(12), b = 18.559(3), c = 11.0985(19) Å, β = 107.736(2)°, and Ζ = 4.
Graphical Abstract
The helicene, pyrido[3,2-f]quinolino[6,5-c]cinnoline 5-oxide, was prepared by treatment of 6-hydroxylaminoquinoline with xanthine oxidase or treatment of 6-nitroquinoline with glucose in 30% NaOH and the product characterized using NMR, high resolution mass spectrometry, and X-ray crystallography on the monohydrate form of the molecule.
Similar content being viewed by others
References
Kotandeniya D, Ganley B, Gates KS (2002) Bioorg Med Chem Lett 12:2325
Solano B, Junnotula V, Marin A, Villar R, Burguete A, Vicente E, Perez-Silanes S, Monge A, Dutta S, Sarkar U, Gates KS (2007) J Med Chem 50:5485
Junnotula V, Sarkar U, Sinha S, Gates KS (2009) J Am Chem Soc 131:1015
Fuchs T, Gates KS, Hwang J-T, Greenberg MM (1999) Chem Res Toxicol 12:1190
Knueppel CA (1899) Liebigs Ann 310:75
Huisgen R (1948) Liebigs Ann 559:127
Farrar, W. V. (1965) J Chem Soc 799
Rummens FHA, Bellaart AC (1967) Tetrahedron 23:2735
Galbraith HW, Degering EF, Hitch EF (1951) J Am Chem Soc 73:1323
Sheldrick G (2008) Acta Cryst A64:112
Barbour LJ (2001) J Supramol Chem 1:189
Bazzini C, Caronna T, Fontana F, Macchi P, Mele A, Sora IN, Panzeri W, Sironi A (2008) New J Chem 32:1710
Staab HA, Zirnstein MA, Krieger C (1989) Angew Chem Int Ed Eng 28:86
Acknowledgment
We thank National Institutes of Health (CA 100757) for partial support of this work.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Rajapakse, A., Barnes, C.L. & Gates, K.S. Synthesis and Crystal Structure of the Azoxydichinyl Helicene, Pyrido[3,2-f]quinolino[6,5-c]cinnoline 5-Oxide Monohydrate. J Chem Crystallogr 41, 1712–1716 (2011). https://doi.org/10.1007/s10870-011-0162-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10870-011-0162-z