Crystal structure of aristoserratine

Abstract

The crystal structure of the alkaloid aristoserratine,* C₂₀H₂₄N₂O, has been determined by single-crystal X-ray diffraction methods at 295 K, the structure being refined to a residual of 0.034 for 1107 independent 'observed' reflections. Crystals are monoclinic, P2₁, a 14.836(5), b 8.568(3), c 6.633(3) Å, β 98.05(3)º, Z 2. The relative configuration is established and, by inference, by comparison of the circular dichroism spectrum with that of aristoteline, the absolute configuration is assigned.