Title: Recent Topics in the Syntheses of Pyrrolizidine Alkaloids
Abstract: Pyrrolizidine alkaloids have attracted much interest as synthetic targets, and various efficient synthetic routes leading to the pyrrolizidine skeleton have been developed. This review deals with the recent advances in the syntheses of pyrrolizidine alkaloids, especially in the syntheses of pyrrolizidine bases (necines) and macrocyclic bislactonic pyrrolizidine alkaloids.