Asymmetric palladium annulation: formal synthesis of (+)-huperzine A
摘要:
A new formal stereoselective synthesis of (+)-huperzine A 1 was achieved using as a key step a palladium mediated annulation between 2-methylene-1,3-propanediol diacetate and (1R,2S)-2-phenylcyclohexanol derived beta-ketoester 14. (C) 1999 Elsevier Science Ltd. All rights reserved.
A new formal stereoselective synthesis of (+)-Huperzine A (1) was achieved using as a key step a palladium mediated annulation between 2-methylene-1,3-propanediol diacetate and (1R,2S)-2-phenylcyclohexanol derived beta-ketoester 2c. (C) 2000 Elsevier Science Ltd. All rights reserved.