Solipsis, i just took a look at the studies sekio references in the thread about the cyclic aMT molecule (nice find), and i think there's still hope for that molecule.
one of the articles is actually about it N,N-dimethyl homologue and this molecule might even do something. it prevented reserpine induced ptosis which according to a quick look at wiki is due to irreservible binding to VMAT, so it probably is a VMAT ligand at least. that's something. and it's a MAOI only at huge concentrations if i'm reading IC50 values correctly (10^-4 M?).
too bad the OP from the thread never returned...
here's Jim-aMT, the nemesis of Jim-TMA... now that looks unpromising