共查询到20条相似文献,搜索用时 43 毫秒
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Wolf-Rainer Abraham Burghard Stumpf Klaus Kieslich 《Applied microbiology and biotechnology》1986,24(1):24-30
Summary Monoterpenoids with 1-p-menthene-structure can be transformed by Corynespora cassiicola DSM 62 474, DSM 62 475, and Diplodia gossypina ATCC 10 936 to chiral 1,2-trans-diols in yields of more than 60% with only minor amounts of side-products. Whereas the substrates (S)-(-)-limonene, -terpinene, -terpinene, and terpinolene are converted to the (1R,2R)-p-menthene-1,2-diols, (R)-(+)-limonene and (R)-(-)-phellandrene yield the (1S,2S)-1,2-diols. For the transformation of (S)--terpineol and (S)--terpinene-4-ol to the (1S,2S)-1,2-diols Gibberella cyanea DSM 62 719 can be used, which however oxidizes parallel at the 6- and 7-position.Dedicated to Professor Dr. Georg Manecke on the occasion of his 70th birthday 相似文献
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D A Galton 《BMJ (Clinical research ed.)》1971,2(5757):323-324
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Kai Larsen 《Nordic Journal of Botany》1996,16(6):636-636
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《Carbohydrate research》1987,166(1):27-33
Hydrated and anhydrous cyclomaltohexaose, cyclomaltoheptaose, and cyclomalto-octaose (cyclodextrins) have been investigated by the c.p.-d.d.-m.a.s. 13C-n.m.r. technique. The chemical shifts of the signals of C-1 and C-6 provide information about conformation and the results agree fairly well with the earlier scattering data on hydrated systems, but some discrepancies have been found for cyclomaltohexaose. Th conformation of the macro-rings seems to be determined by the hydration water. The unique role of water in forming crystals of cyclomalto-oligosaccharides is demonstrated. 相似文献
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