Nucleophilic Additions to Cyclic Nitrones en Route to Iminocyclitols – Total Syntheses of DMDP, 6-deoxy-DMDP, DAB-1, CYB-3, Nectrisine, and Radicamine B
作者:Pedro Merino、Ignacio Delso、Tomás Tejero、Francesca Cardona、Marco Marradi、Enrico Faggi、Camilla Parmeggiani、Andrea Goti
DOI:10.1002/ejoc.200800098
日期:2008.6
with total diastereoselectivity and in quantitative yield, with no purification being necessary. By this strategy, 2-(hydroxymethyl)-, 2-(aminomethyl)-, and 2-aryl-substituted polyhydroxylated pyrrolidines have been prepared with abundant configurational diversity. The use of appropriate substrates and reagents allowed for approaches to DMDP, 6-deoxy-DMDP, DAB-1, CYB-3, nectrisine and radicamine B. Several
对衍生自 L-苹果酸和 D-阿拉伯糖的环状硝酮的高度非对映选择性亲核加成已用于构建对映异构纯的多羟基化吡咯烷。所采用的合成策略基于涉及羟胺/硝酮对的氧化/还原协议,并演示了试剂和底物衍生立体控制的使用。在大多数情况下,反应以完全非对映选择性和定量收率发生,无需纯化。通过这种策略,已经制备了具有丰富构型多样性的 2-(羟甲基)-、2-(氨基甲基)-和 2-芳基取代的多羟基吡咯烷。适当的底物和试剂的使用允许接近 DMDP、6-脱氧-DMDP、DAB-1、CYB-3、油桃和雷卡胺 B。