Study of alkaloids of the Siberian and Altai flora 10. Synthesis of N(20)-deethyllappaconitine derivatives
Efficient procedures were developed for N-deethylation of lappaconitine to give N(20)-deethyllappaconitine. Alkyl derivatives of N(20)- deethyllappaconitine, including labeled lappaconitine, and N(20)-acetoxy-N(20)- deethyllappaconitine were prepared for