The first synthesis of optically pure biscarbazoles and determination of their absolute configurations
作者:Guoqiang Lin、Aimin Zhang
DOI:10.1016/s0040-4039(98)02346-6
日期:1999.1
Opticallypure dimeric O-demethylmurrayafoline A (1) and its 6,6′-dimethoxyl analog 2 were synthesized via the resolution of their corresponding camphorsulfonates of the racemates. The absolute configurations of (+) -1, (+) -2 and (−) -2 were assigned as (a R) and (a S), respectively, by the X-ray analysis and CD spectrum.