Microbial transformation of (+)- and (-)-dehydrogriseofulvin by Streptomyces species analyzed by 2H nuclear magnetic resonance spectroscopy.
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To elueidate the stereochemical course of the microbial transformation of (+)-dehydrogriseofulvin (DGF) by Streptomyces species, (+)-[5'-2H] DGF, which was obtained by dehydrogenation of (+)-[5'α, 5'β-2H] epigriseofulvin, was incubated with S. cinereo-crocatus. The structure of the product was identified as (+)-[5'α-2H] griseofulvin (GF) by 2H nuclear magnetic resonance spectroscopy. The results of incubations of (-)-and (+)-DGF with eight Streptomyces species (S. cinereocrocatus, S. roseochromogenus, S. bikiniensis, S. griseinus, S. durhamensis, S. californicus, S. fimbriatus, and S. cinereoruber) showed that (-)-and (+)-DGF were isomerized to each other and converted to (+)-GF as the main product, although some (-)-GF was also formed depending on the microorganisms used. In particular, incubation of (+)-DGF with S. cinereoruber yielded (-)-GF as the main product. In addition, (±)-DGF was transformed by S. cinereocrocatus to the naturally occurring (+)-GF in 48% yield. The enantiomer ratios of DGF and GF obtained by microbial transformation were calculated from the [α]D values of corresponding enantiomer mixtures.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 29 (8), 2313-2321, 1981
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390001204164318080
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- NII論文ID
- 110003633980
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- NII書誌ID
- AA00602100
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- ISSN
- 13475223
- 00092363
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可