Synthesis of the (4R,5R)-Isomer of 5-Hydroxy-6-phenyl-4-hexanolide, a Lateral Root-inducing Substance Isolated from Erwinia quercina

Takeshi Sugai, Hajime Noguchi, Hiromichi Ohta

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7 Citations (Scopus)


Lipase-catalyzed enantioselective lactonization of racemic methyl 6-phenyl-4-hydroxy-5-hexynoate worked well to afford (R)-6-phenyl-5-hexyn-4-olide (42% yield, 81% e.e.). The e.e. of the product was enhanced to 97% by the repetition of enzymatic reaction. From this lactone, (4R,5R)-isomer of 5-hydroxy-6-phenyl-4-hexanolide, a lateral root inducing substance from Erwinia quercina was synthesized via a selective epoxidation of the intermediate and subsequent hydrogenolysis as the keystep.

Original languageEnglish
Pages (from-to)122-126
Number of pages5
JournalBioscience, Biotechnology, and Biochemistry
Issue number1
Publication statusPublished - 1992 Jan 1


ASJC Scopus subject areas

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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