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Combinatorial Biosynthesis of (+)-Daurichromenic Acid and Its Halogenated Analogue.

Masahiro OkadaKai SaitoChin Piow WongChang LiDongmei WangMiu IijimaFutoshi TauraFumiya KurosakiTakayoshi AwakawaLeonard Kaysser
Published in: Organic letters (2017)
Daurichromenic acid is a meroterpenoid with various pharmacological activities that is biosynthesized from grifolic acid in Rhododendron dauricum. Heterologous expression of grifolic acid synthases from Stachybotrys bisbyi and a daurichromenic acid synthase from R. dauricum in Aspergillus oryzae mediated three-step combinatorial biosynthesis of (+)-daurichromenic acid through enantioselective 6-endo-trig cyclization. Additional introduction of a halogenase from Fusarium sp. into the strain resulted in the biosynthesis of (+)-5-chlorodaurichromenic acid, which exceeds the antibacterial activity of the original compounds.
Keyphrases
  • silver nanoparticles