23768-74-3Relevant academic research and scientific papers
Protecting-Group-Free Total Synthesis of (-)-Lycopodine via Phosphoric Acid Promoted Alkyne Aza-Prins Cyclization
Ma, Donghui,Zhong, Zhuliang,Liu, Zaimin,Zhang, Mingjie,Xu, Shiyan,Xu, Dengyu,Song, Dengpeng,Xie, Xingang,She, Xuegong
, p. 4328 - 4331 (2016)
A protecting-group-free route for the total synthesis of (-)-lycopodine was demonstrated in only 8 steps from Wade's fawcettimine enone (12 steps from commercial availiable (R)-(+)-pulegone). The key core of this alkaloid was constructed through a phosphoric acid promoted and highly stereocontrolled alkyne aza-Prins cyclization reaction, synchronously establishing the bridged B-ring and the C13 quaternary stereocenter. Importantly, the synthesis further features a new efficient approach for the preparation of other lycopodine-type alkaloids.
