Structure of the new alkaloid septenine

Structure of the new alkaloid septenine Septentriosine--a New C₂₀-Diterpenoid Alkaloid from Aconitum septentrionale Sepaconitine — A new alkaloid from Aconitum septentrionale Norditerpenoid alkaloids from Aconitum septentrionale K. 2-Acetylseptentriosine, a New Diterpenoid Alkaloid from Aconitum septentrionale Septerine and septefine ? new alkaloids ofAconitum septentrionale Septentriosine--a New C₂₀-Diterpenoid Alkaloid from Aconitum septentrionale Alkaloids ofAconitum septentrionale 2-Acetylseptentriosine, a New Diterpenoid Alkaloid from Aconitum septentrionale The structure of septedine