Abstract

Stereoselective total synthesis of anti-fungal cyclopentenone (−)-hygrophorone A12 and cyclopentanone 4-epi-2,3-dihydrohygrophorone H12 were achieved in high overall yields from d-ribose. An aqueous KOH mediated diastereoselective formation of β-hydroxy ketone with three contiguous chiral centres served as a key step in this synthesis.

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