Efficient and Chirally Specific Synthesis of Phenanthro‐Indolizidine Alkaloids by Parham‐Type Cycloacylation

Abstract A concise, efficient and modular route involving Parham‐type cycloacylation as the key step has been used to synthesize six enantiopure phenanthro‐indolizidine alkaloids 1a–c. The preparation of enantiomerically pure tylophora alkaloids and their seco analogues on a large‐scale is now feasi... View More