K. Decanniere et al., STRUCTURE OF 23,24-DINOR-5-ALPHA-CHOLAN-12-ONE, Acta crystallographica. Section C, Crystal structure communications, 49, 1993, pp. 1824-1826
The crystal and molecular structure of 23,24-dinor-5alpha-cholan-12-on
e has been determined. Rings A, B and C have a chair conformation, rin
g D a half-chair conformation. All rings are trans connected. The crys
tal structure of the title compound confirms the link between a differ
ent kinetic behaviour during reduction of 12-oxosteroids with LiAlH4 a
nd a different orientation of the pi system of the ketone functional g
roup.