5,12-Dimethoxy-13-oxo-13H-dibenzo[a,h]fluorene-7-carboxylic acid diisopropylamide 在
三溴化硼-二甲基硫醚 三溴甲基硫化硼 、
叔丁基锂 作用下,
以
various solvent(s) 为溶剂,
反应 24.0h,
生成 10',20'-dihydroxy-4-oxo-N,N-di(propan-2-yl)spiro[3-oxatricyclo[7.3.1.05,13]trideca-1(12),5,7,9(13),10-pentaene-2,12'-pentacyclo[11.8.0.02,11.04,9.014,19]henicosa-1(13),2,4,6,8,10,14,16,18,20-decaene]-3'-carboxamide