Enantioselective Synthesis of Diversely Substituted Quaternary 1,4-Benzodiazepin-2-ones and 1,4-Benzodiazepine-2,5-diones
作者:Paul R. Carlier、Hongwu Zhao、Stephanie L. MacQuarrie-Hunter、Joseph C. DeGuzman、Danny C. Hsu
DOI:10.1021/ja0640142
日期:2006.11.1
Benzodiazepines are privileged scaffolds in medicinal chemistry, but enantiopure examples containing quaternary stereogenic centers are extremely rare. We demonstrate that installation of the di(p-anisyl)methyl (DAM) group at N1 of 1,4-benzodiazepin-2-ones and 1,4-benzodiazepine-2,5-diones derived from enantiopure proteinogenic amino acids allows retentive replacement of the C3-proton via a deprotonation/trapping