Figure 3
From: Unnatural spirocyclic oxindole alkaloids biosynthesis in Uncaria guianensis

Formation of the main product ions of natural and unnatural oxindole alkaloids 3, 3b and 3c.
From: Unnatural spirocyclic oxindole alkaloids biosynthesis in Uncaria guianensis

Formation of the main product ions of natural and unnatural oxindole alkaloids 3, 3b and 3c.