作者:K. Anand Solomon、S. S. Rajan、G. Gopalakrishnan、V. Kashinath、V. P. Santhana Krishnan
DOI:10.1107/s0108270102020838
日期:2003.1.15
The title compound, C16H19BrO4, is a derivative of osthol, isolated from the seeds of Imperatoria Osthruthium. The structure was solved in space group P (1) over bar, 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.