Highly Enantioselective Synthesis of Rigid, Quaternary 1,4-Benzodiazepine-2,5-diones Derived from Proline
作者:Stephanie MacQuarrie-Hunter、Paul R. Carlier
DOI:10.1021/ol052182d
日期:2005.11.1
4-benzodiazepine-2,5-diones are extremely useful scaffolds in medicinal chemistry. In this paper, we describe a protocol for retentive C3 alkylation of these materials, thus accomplishing the direct synthesis of enantiopure quaternary 1,4-benzodiazepine-2,5-diones. The high enantioselectivities (up to 99.5%) are attributed to memory of chirality.
[反应:见正文]脯氨酸衍生的1,4-苯并二氮杂-2,5-二酮在药物化学中是非常有用的支架。在本文中,我们描述了这些材料的可保留C3烷基化的方案,从而完成了对映纯的季铵1,4-苯并二氮杂-2,5-二酮的直接合成。高对映选择性(高达99.5%)归因于手性的记忆。