chemo enzymatic isosorbideA new chemoenzymatic protocol for the preparation of 6-aminoisomannide was developed starting from renewable sources. The key step of the protocol was a biocatalysed highly regioselective acetylation of the 3-endo hydroxyl group of isosorbide, performed employing Immobilized Amano Lipase PS onto octadecyl methacrylate resin. The catalyst gave good results even on a large scale (10mmol) and it could be recycled 3 times without loss of selectivity.

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