Xylerythrins synthesis

This method allowed also the synthesis of xylerythrins (IV, Scheme 4b), through a Perkin-type condensation of the terphenylquinone with... 

Structure (155) for xylerythrin was confirmed by synthesis involving a Perkin-type condensation between polyporic acid and (4-hydroxy-phenyl)acetic aicid (329). This reaction, performed in acetic anhydride... 

In what amounts to a biogenetically patterned approach, a synthesis of xylerythrin (7 a) has been reported involving condensation between polyporic acid (100) and p-hydroxyphenylacetic acid (d) this Perkin-type reaction proceeds via the 4-oxo-2-enoic acid intermediate (101). 

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