Abstract
We evaluated the substrate specificities of four proline cis-selective hydroxylases toward the efficient synthesis of proline derivatives. In an initial evaluation, 15 proline-related compounds were investigated as substrates. In addition to l-proline and l-pipecolinic acid, we found that 3,4-dehydro-l-proline, l-azetidine-2-carboxylic acid, cis-3-hydroxy-l-proline, and l-thioproline were also oxygenated. Subsequently, the product structures were determined, revealing cis-3,4-epoxy-l-proline, cis-3-hydroxy-l-azetidine-2-carboxylic acid, and 2,3-cis-3,4-cis-3,4-dihydroxy-l-proline.
我们评估了四种脯
氨酸顺式选择性羟化酶对脯
氨酸衍
生物高效合成的底物特异性。在初步评估中,我们研究了15种脯
氨酸相关化合物作为底物。除了l-脯
氨酸和l-哌
哌酸外,我们发现3,4-去氢脯
氨酸、l-
吡啶二
羧酸、顺式-3-羟基-l-脯
氨酸和l-
硫脯
氨酸也被氧化。随后,确定了产物结构,揭示了顺式-3,4-环氧-l-脯
氨酸、顺式-3-羟基-l-
吡啶二
羧酸和2,3-顺式-3,4-顺式-3,4-二羟基-l-脯
氨酸。