Figure 3
Superposition of the two symmetry-independent molecules of (VII), showing (a) the superposition in which 2,5-dioxabicyclo[2.2.1]heptane moieties were fitted and (b) the superposition in which 8-aza-7-deazaadenine fragments were fitted. Molecule A is shown with dashed lines and molecule B is shown with full lines. O and N atoms are represented as spheres. |