Abstract
The conversional synthesis of taxoids by the BAC sequence from the C19-diterpenoid alkaloids, 14-acetyltalatisamine (1), yunaconitine (12), and 14-acetylchasmanine (19), was designed and explored. Two aconane-type diterpenes 17 and 28, the advanced intermediates for our conversional synthesis, were synthesized. The key steps include the rupture of the C(7)–C(17) bond, the formation of imine, and the denitrogenation.
Acknowledgement
We are grateful to the National Natural Science Foundation of China (No. 30873147) for the financial support of this research.