Isolation and Characterization of Atropisomers of Seven-Membered-Ring Benzolactams
作者:Hidetsugu Tabata、Naoya Wada、Yuko Takada、Tetsuta Oshitari、Hideyo Takahashi、Hideaki Natsugari
DOI:10.1021/jo2008725
日期:2011.6.17
The atropisomeric properties of seven-membered-ring benzolactams (7a-c and 8a) [1,5-benzodiazepin-2-one (a), 1,5-benzothiazepin-4-one (b), and 1-benzazepin-2-one (c)] were examined. The atropisomers were isolated as the diastereomers with an (S)-phenethylamide moiety, which were characterized by X-ray crystallography, and the barriers to their interconversion were clarified.