Abstract
The carbon skeleton present in eudistomins H, I and in woodinine may be envisioned to be biosynthetically derived from tryptamine and L-prolinal by a Pictet-Spengler type reaction. The diastereoselectivity (5:1) of this reaction, and the elaboration of the Pictet-Spengler products into the title compounds is described. The absolute stereochemistry of (−) woodinine is thereby established.
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