| 摘要 |
2118795 9306236 PCTABS00021 A process for the separation of at least one isomer from a mixture of isomers of a tetrahydropyran-2-one, having at least two chiral centres which comprises selective reaction of at least one isomer with a reagent catalysed by a hydrolase enzyme whereby at least one isomer is preferentially converted into a distinct chemical species from the other isomers so that it is susceptible of separation by an appropriate chemical or physical separation process in which the tetrahydropyran-2-one is of formula (1) wherein Z is -H or a protecting group susceptible of reaction with the reagent under the influence of the enzyme; and Y is formyl or protected formyl.
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