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8-(2-bromo-3-methoxy-3-methylbutyl)-7-methoxycoumarin
K Anand Solomon1, S S Rajan, G Gopalakrishnan
1Department of Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.
Acta Crystallographica. Section C, Crystal Structure Communications
|December 31, 2002
Abstract:
The title compound, C(16)H(19)BrO(4), is a derivative of osthol, isolated from the seeds of Imperatoria Osthruthium. The structure was solved in space group P-1, with two molecules in the asymmetric unit, and was refined to a final R factor of 0.064. The two molecules in the asymmetric unit differ in the orientation of their brominated substituent group. The benzopyran ring displays aromatic character. The packing of the molecules in the lattice is mainly due to C-H...O hydrogen bonds.