SEARCH Articles Figures Tables Asymmetric synthesis of pyrrolizidine alkaloids Biogenesis of Naturally Occurring Pyrrolizidines Configurations of pyrrolizidine bases Ellen W. Baxter and Patrick S. Mariano The Loline Group of Pyrrolizidine Alkaloids Of pyrrolizidine alkaloids Pyrrolizidin Pyrrolizidine Reactions of Pyrrolizidine and Its Derivatives Reactions of pyrrolizidines Stereochemistry of Pyrrolizidine Bases Stereochemistry of pyrrolizidines Synthesis of pyrrolizidines The Synthesis of Pyrrolizidine Derivatives