In connection with the synthesis and epoxidation of campholenic and fenchol
enic derivatives some trimethylammonium iodides (2 and 4) similar to muscar
in were prepared. They may be of interest for the investigation of the chol
inergic receptor. The stereochemistry of the epoxytrimethylammonium iodide
4a was determined by NR-LR and X-ray analysis.