Figure 3
The crystal packing of Z-Aib-Aib-Aib-Gly-OtBu, viewed approximately perpendicular to the helical columns. Intramolecular hydrogen bonds are shown as green dashed lines and intermolecular hydrogen bonds are shown as blue dashed lines. H atoms have been omitted for clarity. Some positions of the disordered water molecules are shown in turquoise. |