Synthesis of an Enantiomerically Pure Building Block for the Synthesis of Hydroporphyrins
作者:Genevieve Etornam Adukpo、Tobias Borrmann、René Manski、Rosa I. Sáez Díaz、Wolf-Dieter Stohrer、Franz-Peter Montforts
DOI:10.1002/ejoc.200600656
日期:2007.1
The enantiomerically pure pyrrolidine diester 4 is a useful building block for the synthesis of chiral hydroporphyrin compounds. Treatment of optically active aromatic amines with bislactone 5 gave pairs of N-alkylated lactam-lactone diastereomers 6 and 8. These diastereomers were separated by MPL chromatography and in the case of 8 they could be debenzylated to yield the enantiomerically pure lactam-lactone
对映体纯的吡咯烷二酯 4 是合成手性氢卟啉化合物的有用构件。用双内酯 5 处理旋光芳香胺得到 N-烷基化内酰胺-内酯非对映体 6 和 8 对。这些非对映体通过 MPL 色谱分离,在 8 的情况下,它们可以脱苄基得到对映体纯的内酰胺-内酯 7 和其对映体。(–)-内酰胺-内酯对映体 7 进一步转化为结构单元 4。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)