Thanks for that tidbit! It's been suggested
here , at least, that tropane alkaloids are responsible for the intoxicating effects of
Alternanthera lehmannii - which would also explain its use as an ayahuasca admixture plant.
Considering
Alternanthera philoxeroides is used as a vegetable it seems fair to infer that its psychoactive effects are minimal to zero. The "interesting amide" is likely present only in trace amounts (if at all - it's prudent to be sceptical about these kinds of reports) and it's not clear what effects it may have.
“There is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
― Jacques Bergier, quoting Fulcanelli