4,5-dimethoxy-9-(2',3'-dihydro-2'-methyl-1'H-naphtho[2,1-b]thiopyran-1'-ylidene)-9H-thioxanthene 在
Chiralcel AD column 作用下,
以
正庚烷 、
异丙醇 为溶剂,
生成 4,5-dimethoxy-9-((2'S)-2',3'-dihydro-2'-methyl-1'H-naphtho[2,1-b]thiopyran-1'-ylidene)-9H-thioxanthene 、
4,5-dimethoxy-9-((2'R)-2',3'-dihydro-2'-methyl-1'H-naphtho[2,1-b]thiopyran-1'-ylidene)-9H-thioxanthene