Gelsemium alkaloids

Alkaloids with a structure that is based on the tetracyclic gelsemium skeleton. These alkaloids contain an oxindole function and a cage-like, hydroaromatic residue which is believed to arise from an intermediate related to anhydrovobasinediol by formation of a 6,20 bond and rearrangement to an oxindole. The major alkaloids in this group are related to Gelsemine; however, a smaller group, characterized by Gelsedine, lack the 6,20 bond, and have also lost C-21.

Organic compounds -> Alkaloids and derivatives