alexa Lipase-catalysed resolution of gamma- and delta-lactones.
Environmental Sciences

Environmental Sciences

Journal of Petroleum & Environmental Biotechnology

Author(s): Enzelberger MM, Bornscheuer UT, Gatfield I, Schmid RD

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Abstract Lipase-catalysed stereoselective hydrolysis of a family of saturated gamma- and delta-lactones was investigated. Increasing the chain length from delta-octalactone to delta-dodecalactone leads to higher enantiomeric excess. Best results were found using a lipase from Pseudomonas species (KW51) yielding highest enantiomeric excesses (greater than 99\% ee at 50\% conversion, E > 100) at short reaction times (10 h) for delta-undecalactone and delta-dodecalactone. In contrast, gamma-lactones were resolved less efficiently. Highest enantioselectivities (70\%ee at 50\% conversion, E = 11) were found for gamma-nonalactone. Optimum reaction conditions were found at pH 8 and 12.5 degrees C.
This article was published in J Biotechnol and referenced in Journal of Petroleum & Environmental Biotechnology

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