作者:Shiming Fan、Shouxin Liu、Hubo Zhang、Ying Liu、Yihuang Yang、Longyi Jin
DOI:10.1002/ejoc.201402470
日期:2014.9
β-hydroxy-β-arylalanine and β-methoxy-β-arylalanine derivatives, which occur widely in marine nature products, were stereoselectively synthesized with 99 % ee values. The two erythro isomers were prepared by L- or D-aminoacylase-catalyzed resolution of the corresponding N-acetyl derivatives, whereas the two threo isomers were obtained only by D-aminoacylase-catalyzed resolution of the derivatives. erythro-β-Hydroxy-β-arylalanine
手性β-羟基-β-芳基丙氨酸和β-甲氧基-β-芳基丙氨酸衍生物广泛存在于海洋天然产物中,它们是立体选择性合成的,具有99%的ee值。两种赤型异构体是通过 L-或 D-氨基酰化酶催化拆分相应的 N-乙酰基衍生物制备的,而两种苏型异构体仅通过 D-氨基酰化酶催化拆分衍生物获得。赤型-β-羟基-β-芳基丙氨酸衍生物是通过 2-(羟基亚氨基)-3-氧代-3-芳基丙酸乙酯的非对映选择性氢化制备的,而后者又是通过 3-氧代-3-芳基丙酸乙酯与乙基的肟化而获得的。在纳米 K2CO3 存在下,亚硝酸盐的产率为 72% 至 80%。