Figure 1
The molecular structure of (I), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level and H atoms are drawn as small spheres of arbitrary radii. The absolute configurations at atoms C4 (C4′) and C12 (C12′) are S and R, respectively, with the H atom on C4 pointing above the sulfonamide mean plane, as for the equivalent H atom of (II). |