Stereochemistry of Microbial Transformation of (+)- and (—)-2'-Demethoxydehydrogriseofulvin by Streptomyces cinereocrocatus

Taiko Oda, Yoshihiro Sato

研究成果: Article査読

5 被引用数 (Scopus)

抄録

To elucidate the stereochemistry of microbial hydrogenation of (+)- and (—)-2'-de-methoxydehydrogriseofulvin (1 and 2) by Streptomyces cinereocrocatus NRRL 3443, deu-terated substrates (la, lb, 2a, and 2b) were synthesized from (+)-griseofulvin (9) and subjected to microbial transformation. The 41.41 MHz 2H nuclear magnetic resonance (NMR) and 400 MHz 1H NMR studies clearly revealed that the microbial hydrogenations of (+)- and ()-2'-demethoxydehydrogriseofulvin (1 and 2) proceed stereospecifically with an anti-addition of hydrogens at the 2' and 3' positions. Further, the microbial transformation of 1 to (+)-2'-demethoxy-2',3'-dihydrodehydrogriseofulvin (5) indicates an isomerization by the microor-ganism of 1 to the enantiomer, (—)-2 '-demethoxydehydrogriseofulvin (2), which is further hydrogenated to afford 5.

本文言語English
ページ(範囲)3446-3453
ページ数8
ジャーナルChemical and Pharmaceutical Bulletin
31
10
DOI
出版ステータスPublished - 1983 1 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Drug Discovery

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