Dichloroketene−Chiral Olefin-Based Approach to Pyrrolizidines:  Highly Stereocontrolled Synthesis of (+)-Amphorogynine A

Dichloroketene−Chiral Olefin-Based Approach to Pyrrolizidines:  Highly Stereocontrolled Synthesis of (+)-Amphorogynine A First total synthesis of a new pyrrolizidine alkaloid, amphorogynine A Pyrrolizidine Alkaloids from <i>Amphorogyne spicata</i> Pyrrolizidine Alkaloids from Amphorogyne spicata Stereoselective synthesis of a novel branched-chain (1S,2R,6R,7S)-7a-(hydroxymethyl)-1,2,6,7-tetrahydroxypyrrolizidine Synthesis of indolizidine and pyrrolizidine alkaloids by the [2+2] cycloaddition of endocyclic enecarbamates to alkyl ketenes Total Synthesis of a Pyrroloindoloquinazoline Alkaloid Enantioselective Synthesis of (−)‐10‐Hydroxyacutuminine Pyrrolizidine alkaloid analogues. Synthesis of macrocyclic diesters of (±)-synthanecine A from (±)-3-chloromethyl-2-hydroxymethyl-1-methyl-2,5-dihydropyrrolium chloride Synthesis of Pentahydroxylated Pyrrolizidines and Indolizidines