Polymer-supported novel optically active crown ethers were prepared by the reaction of chiral crown ethers derived from L-(+)-tartar& acid and 4-chloromethylated polystyrene resins crosslinked with 2 mol% of divinylbenzene. The ring substitution which indicates percentages of fnnctionalized unit of
โฆ LIBER โฆ
Novel catalytic activity of immobilized spores under reduced water activity
โ Scribed by Tapan K. Dutta; Timir B. Samanta
- Book ID
- 104364885
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 212 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0960-894X
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โฆ Synopsis
Onset of a new catalytic function during transformation of progesterone by immobilized spores ofAspergillus ochraceus TS under reduced water activity is reported. The pathway of transformation, which furnished ] ,4-androstadien-17~3-ol-3-one and 1,4-androstadien-3,17-dione due to cleavage of C~7-C20 bond, is different from normal reaction sequence.
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