salsolinol & norsalsolinol: natural dopamine-metabolite ringed monoamine

[Nagelfar]

Norsalsolinol
Interesting that it is a naturally selective dopaminergic neurotoxin.

Above three images from following full paper:
http://www.ncbi.nlm.nih.gov/pubmed/16088952

 

[asecin]

and the point of this, is?

 

[Nagelfar]

and the point of this, is?

What's the point of anything? I wasn't aware that biogenic amines had cyclohexane metabolites.