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Asymmetrical synthesis method of lyrica
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, (2018/06/04)
The invention discloses an asymmetrical synthesis method of lyrica, wherein the synthesis steps comprise: carrying out a cyclic anhydridization reaction by using 3-isobutylglutaric acid as a raw material, carrying out an asymmetric ring-opening reaction with (R)-(+)-1-phenylethylamine, and sequentially carrying out a hydrogenation reaction and Huffman rearrangement to obtain lyrica. Compared to the synthesis method in the prior art, the synthesis method of the present invention has advantages of inexpensive and easily-available raw materials and less reaction steps, has the total yield of up to 60%, the purity of the product lyrica of more than 99% and the ee value of more than 99%, and has good application prospect in industrial scale up production.