Fig. 7: Proposed mechanism of SptF reactions.

The mechanism for the generation of emervaridone B (2) is revised in this study. Paths a (red) and b (magenta) branch from the intermediate 3, to produce 4 and 5, respectively.
The mechanism for the generation of emervaridone B (2) is revised in this study. Paths a (red) and b (magenta) branch from the intermediate 3, to produce 4 and 5, respectively.