Synthesis OF (1 R ,2 R ,7 R ,7a S )-1-Hydroxymethyl-2,3,5,6,7,7a-Hexahydropyrrolizidine-1,2,7-TRIOL from Rosmarinine Degradation

Synthesis OF (1 R ,2 R ,7 R ,7a S )-1-Hydroxymethyl-2,3,5,6,7,7a-Hexahydropyrrolizidine-1,2,7-TRIOL from Rosmarinine Degradation Pyrrolizidine Alkaloids from Senecio hadiensis A re-investigation of the alkaloids of Senecio pterophorus Callosine, a 3-Alkyl-Substituted Pyrrolizidine Alkaloid from <i>Senecio callosus</i> Callosine, a 3-Alkyl-Substituted Pyrrolizidine Alkaloid from Senecio callosus Pyrrolizidine Alkaloids from <i>Senecio </i><i>r</i><i>oseus </i>and <i>Senecio </i><i>h</i><i>elodes</i> Pyrrolizidine Alkaloids from Senecio roseus and Senecio helodes Pyrrolizidinalkaloide aus Senecio vernalis Pyrrolizidine alkaloid biosynthesis. Synthesis of N-([4-14C]-4-aminobutyl)-1,2-didehydropyrrolidinium and its incorporation into different pyrrolizidine bases (necines) The pyrrolizidine alkaloids of Senecio triangularis