Cholane Derivatives with Potential Ligating Groups at the 3‐ and 24‐Positions

Starting from readily available lithocholic acid, a number of new cholane derivatives have been prepared consisting of the same or different electron‐donor groups at the 3‐ and 24‐positions. Yields ranged from good to excellent. The donor groups were chosen on the basis of their known ability to coordinate to transition‐metal ions and include pyridyl, 1,3‐dithiolanyl, phenylthioether, and oxime ether groups.