translate English to French: The 13Cmr spectra of several cholestanes including 13 A-homo-B-nor derivatives, 11 A-homo derivatives, and 8 B-nor examples have been examined.
On a étudié les spectres rmn du 13C de plusieurs cholestanes dont 13 dérivés A-homo B-nor, 11 dérivés A-homo et 8 dérivés B-nor.