Identification of Pyrrolizidine Alkaloids in Senecio Plants by Liquid Chromatography-Mass Spectrometry

Figure 5

Probable structures of several peaks. (a) Fuchsisenecionine. (b) Racemocine. (c) 7-Angeloylturneforcidine. (d) Dihydro-Sarracine. (e) Dihydro-Sarracine. (f) 18-Hydroxysenkirkine. (g) Hydroxysen kirkine. (h) Anonamine. (i) Planchonelline. (j) Jaconine. (k) Merenskine. (l) 7-Angeloylretronecine. (m) 9-Angeloylretronecine. (n) 7-Senecioylretronecine. (o) Dehydro-senkirkine I. (p) Dehydro-senkirkine II.