Add time:07/15/2019         Source:sciencedirect.com

An efficient chemoenzymatic synthesis of (−)-3-methyl 5-(2-propoxyethyl) (4R)-4-[2-(difluoromethoxy)phenyl]-2,6-dimethyl-1,4-dihydro-3,5-pyridinedicarboxylate has been achieved. The key step is a highly stereoselective Candida rugosa lipase (CRL)-mediated asymmetrisation of the prochiral bis[(isobutyryloxy)methyl]-4-[2-(difluoromethoxy)phenyl]-1,4-dihydro-2,6-dimethyl-3,5-pyridinedicarboxylate.

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