作者:Chicco Manzuna Sapu、Jan Deska
DOI:10.1039/c2ob27073k
日期:——
The first asymmetric total synthesis of hyperiones A and B, two norlignans from Hypericum chinense, has been accomplished following a chemoenzymatic approach. Key features of this synthesis include the lipase-catalyzed enantioselective desymmetrization of a prochiral allenic diol and a silver-mediated cycloisomerization of the resulting axially chiral product to furnish the furan core structure. Two
按照化学酶法,已经完成了来自金丝桃属植物金丝桃属的两个炔诺酮的高阴离子离子A和B的首次不对称全合成。该合成的关键特征包括前手性烯丙二醇的脂肪酶催化的对映选择性去对称化和所得的轴向手性产物的银介导的环异构化以提供呋喃核结构。描述了两种可供选择的途径,一方面是钌催化的氧化还原异构化,另一方面是铂催化的氢化,以最终获得所需的降冰片烷烃。