Efficient Biocatalytic Synthesis of Highly Enantiopureα-Alkylated Arylglycines and Amides
作者:Mei-Xiang Wang、Shuan-Jun Lin、Jun Liu、Qi-Yu Zheng
DOI:10.1002/adsc.200303219
日期:2004.3
racemic α-alkylarylglycine amides including 1-amino-1-carbamoyl-1,2,3,4-tetrahydronaphthalene underwent efficient biocatalytic hydrolysis under very mild conditions to afford the corresponding (S)-α-alkylarylglycines and (R)-α-alkylarylglycine amides in excellent yields with enantiomeric excesses higher than 99.5%. Both the reaction rate and enantioselectivity of biocatalytic kinetic resolution were strongly
包括1-氨基-1-氨基甲酰基-1,2,3,4-四氢萘在内的许多外消旋α-烷基芳基甘氨酸酰胺在非常温和的条件下进行了有效的生物催化水解,得到相应的(S)-α-烷基芳基甘氨酸和(R)- α-烷基芳基甘氨酸酰胺具有优异的收率,对映体过量高于99.5%。生物催化动力学拆分的反应速率和对映选择性都强烈取决于取代基的性质和底物苯环上的取代方式。相反,在含腈水化酶/酰胺酶的微生物红球菌的催化下,未观察到源自苯乙酮的Strecker腈的有效生物转化。sp。AJ270全细胞催化剂。结合酰胺的化学水解,该生物转化过程从容易获得的外消旋酰胺提供了两种对映体形式的α-取代的芳基甘氨酸的有效合成。