Crystal Structure of 8-(3-Methyl-3-benzoylamino-butyl)-7-methoxycoumarin

Abstract

The title compound, C₂₂H₂₃NO₄, is a derivative of osthol isolated from Imperatoria Osthruthium, known to possess an anti-inflammatory effect. The compound was crystallized in space group P2₁/c with cell parameters a = 11.383(3), b = 17.831(4), c = 9.802(2)Å, and β = 94.127(5)°. The final R factor is 0.0629. A modification of the compound has brought about changes in the conformation of C7 and C8. A ring motif, R¹₂ (8), is generated by C-H…O and N-H…O hydrogen bonding. The packing is also stabilized by a C-H…π interaction.