%0 Journal Article %A Hart, NK %A Lamberton, JA %T Pyrrolizidine alkaloids from Planchonella species (family Sapotaceae). I. The alkaloids of Planchonella thyrsoidea C. T. White and P. anteridifera (White & Francis) H. J . Lam %J Australian Journal of Chemistry %D 1966/07/01 %V 19 %N 7 %P 1259-1264 %K %R https://doi.org/10.1071/CH9661259 %U https://www.publish.csiro.au/paper/CH9661259 %X Planchonelline, Cl2H1902NS, a, major alkaloid of the leaves of Planchonella thyrsoidea C. T. White and P. anteridifera (White & Francis) H. J. Lam., is the trans-β-methylthioacrylate ester of laburnine((+)-trachelanthamidine). In both species it occurs together with the tiglate and benzoate of laburnine, but only the tiglate and benzoate were isolated from stored dried leaves of P. anteridifera.