Macromerine is a phenethylamine derivative. It was first identified from the cactus Coryphantha macromeris.[1] It can also be found in C. runyonii,[2]C. elephantidens, and other related members of the family Cactaceae.
^Brown, Stanley D.; Hodgkins, Joe E.; Reinecke, Manfred G. (1972). "Isolation, structure, synthesis, and absolute configuration of the cactus alkaloid, macromerine". The Journal of Organic Chemistry. 37 (5): 773–5. doi:10.1021/jo00970a024. PMID5016327.
^Below, L.E.; Leung, A.Y.; Paul, A.G.; McLaughlin, J.L. (1968). "Cactus Alkaloids IV. Macromerine from Coryphantha runyonii". Journal of Pharmaceutical Sciences. 57 (3): 515–6. doi:10.1002/jps.2600570334. PMID5655598.