Figure 15.

Takata's catalytic asymmetric synthesis of a mechanically planar chiral rotaxane (only one rotaxane enantiomer depicted, note the configuration of the major enantiomer was not established).

Takata's catalytic asymmetric synthesis of a mechanically planar chiral rotaxane (only one rotaxane enantiomer depicted, note the configuration of the major enantiomer was not established).