5-(3,5-dichlorophenyl)-2,5-dihydro-10-methoxy-2,2,4-trimethyl-1H-[1]benzopyrano[3,4-f]quinoline 生成 (+)-2,5-dihydro-10-methoxy-2,2,4-trimethyl-5-(3,5-dichlorophenyl)-1H-[1]benzopyrano[3,4-f]quinoline 、 (-)-2,5-dihydro-10-methoxy-2,2,4-trimethyl-5-(3,5-dichlorophenyl)-1H-[1]benzopyrano[3,4-f]quinoline