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Figure 1
The molecular structures of (a) (I) , (b) (II) , (c) (III) , (d) (IV) , (e) (V) and (f) (VI) , showing the atom-labelling schemes. The (2R,4R) enantiomer is shown for (IV) and the (2S,4R) enantiomers for the remainder. Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. |


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