Method of chiral epoxidation of benzopyran or pyranopyridine derivatives using microorganisms
US5478734A · kind A · utility
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Key dates
| Filing date | Feb 7, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Feb 7, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P41/004
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An enzymatic process for the preparation of chiral epoxides, monohydroxy or dihydroxy compounds of formula ##STR1## by the stereoselective epoxidation or hydroxylation of benzopyrans of formula ##STR2## or resolution of compounds of formula ##STR3## The compounds of formula I and II are intermediates useful in the preparation of pyranyl cyanoguanidine derivatives.
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