p-methoxybenzyl-7-phenylacethylamino-3-propenyl-3-cephem-4-carboxylate(GPRE) was an important intermediate in Cefprozil industry. In the enzymatic methodology of producing Cefprozil from GPRE, p-methoxybenzyl protecting group in the 4 site should be hydrolyzed. Currently all methods aiming to deprotect the p-methoxybenzyl ester of GPRE were chemical method, required a lot of organic reagents as well as low reaction temperature, which posied serious environmental hazard and consumed excess amount of energy.
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