Two new 4-phosphoryloxytryptamine derivatives have been isolated from Psilocybe baeocystis grown in submerged cultures. Using ultraviolet, infrared, and mass spectral analyses the structures have been determined. Both are analogs of the psychotomimetic, psilocybin, and have been named baeocystin (monomethyl analog) and norbaeocystin (demethyl analog).
Leung, A. Y. and A. G. Paul (1968). “Baeocystin and Norbaeocystin: New Analogs of Psilocybin from Psilocybe baeocystis.” Journal of Pharmaceutical Sciences 57(10): 1667-1671.