Pepsin-catalyzed direct asymmetric aldol reactions for the synthesis of vicinal diol compounds
作者:Ling-Yu Li、Da-Cheng Yang、Zhi Guan、Yan-Hong He
DOI:10.1016/j.tet.2015.01.061
日期:2015.3
The catalytic promiscuity of pepsin from porcine gastric mucous was observed in catalysis of the direct asymmetric aldol reactions of aromatic aldehydes with acetones, which were substituted by hydroxy-, dihydroxy-, methoxy- and benzyloxy- for the synthesis of diol compounds in acetonitrile. This biocatalysis was also applicable to the aldol reactions of cyclic or hetereocyclic ketones with aromatic
在催化芳香族醛与丙酮直接不对称醛醇缩合反应的催化过程中,观察到了胃蛋白酶对胃蛋白酶的混杂作用,丙酮醛被羟基,二羟基,甲氧基和苄氧基所取代,从而在乙腈中合成二醇化合物。该生物催化也适用于环状或杂环酮与芳族醛的醛醇缩合反应。获得了高达87%的产率,高达> 99/1 dr的非对映选择性和高达75%ee的对映选择性。