Pyrrolizidine alkaloid analogues. Synthesis of 11-membered macrocyclic diesters of (±)-synthanecine A

Pyrrolizidine alkaloid analogues. Synthesis of 11-membered macrocyclic diesters of (±)-synthanecine A Pyrrolizidine alkaloid analogues. Synthesis of 10-membered macrocyclic diesters of (±)-synthanecine A. X-Ray molecular structure of (±)-6,7-O,O-(succinyl)synthanecine A Pyrrolizidine alkaloid analogues. Synthesis of macrocyclic diesters of (±)-synthanecine A from (±)-3-chloromethyl-2-hydroxymethyl-1-methyl-2,5-dihydropyrrolium chloride Macrocyclic Pyrrolizidine Alkaloids from Senecio anonymus. Separation of a Complex Alkaloid Extract Using Droplet Counter-Current Chromatography Synthesis of new macrocycles. Part 6. Pyridine-retronecate, a new synthetic alkaloid Synthesis of 2-Azabicyclo[3.3.1]nonanes: Lessons from Synthetic Studies of Macrocyclic Diamine Alkaloids Synthesis of 2-Azabicyclo[3.3.1]nonanes: Lessons from Synthetic Studies of Macrocyclic Diamine Alkaloids First total synthesis of a new pyrrolizidine alkaloid, amphorogynine A Novel pyrrolizidine alkaloid from Crotalaria nana Stereoselective Synthesis of Novel (±)-trans-Dihydronarciclasine Analogues: Preparation of a Pivotal Intermediate Containing Two Methoxy Substituents